Profibus
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Industrial Communication Chapter 6: Profibus
Profibus Features
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
2
Introduction ● Profibus = PROcess FIeld BUS ● Initialized in 1987 by the German Ministry for Research and Technological Development. ● Now managed by an association of PROFIBUS Manufacturers, Users and research institutions ● More than 1100 members worldwide (Profibus International)
● Conforms to standard EN 50 170 ● 3 Versions of Profibus ● Profibus FMS ● Profibus PA ● Profibus DP http://www.profibus.org Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
3
Profibus Versions
Profinet
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
4
Layers Used in ISO Model ● 3 Layers used for Profibus APPLICATION
Cyclical and Acyclical data services
PRESENTATION
Not used
SESSION
Not used
TRANSPORT
Not used
NETWORK
Not used
DATALINK
Serial link Master/Slave or Token Ring if multimaster
PHYSICAL
RS 485 or Fiber Optic
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
5
Physical Layer ● RS485 or Fiber Optic ● Baudrate from 9.6 Kbps to 12 Mbits ● Max distance without Repeaters: Depends on the Baudrate Bit rate
Length (cable type A)
9.6 Kb/s 187.5 Kb/s
500 Kb/s
1,5 Mb/s
3 Mb/s
19.2 Kb/s
6 Mb/s
93.75 Kb/s
12 Mb/s
1200 m
1000 m
400 m
200 m
100 m
● Maximum number of stations: 32 without repeaters, 122 with 3 repeaters ● Address range : 1 to 125 ● Address 126 : reserved for address assignment via the bus ● Address 127 : reserved for broadcast and multicast
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
6
Connections ● SubD 9 or Open Connector
VP*
(6)
B
(3)
A
(8)
DGnd* (5)
390 Ω
Data line B
390 Ω
220 Ω
Data line A
220 Ω 390 Ω
390 Ω
A (8)
B (3)
Device 2
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
A (8)
VP*
(6)
B
(3)
A
(8)
DGnd* (5)
B (3)
Device 3
7
Link Layer ● Passive stations (slaves) uses the master-slave concept. ● Master polls the slaves one by one. ● The transmit message send to the slaves is called « PPO » (Parameter Process Object).
● Active stations communication is based on the token ring concept. Active stations = master devices
Passive stations = slaves devices Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
8
Frame Transmission Start Delimiter
Length
Destination address
….
User Data (max. 244 bytes)
Frame check sequence
End delimiter
● Up to 244 bytes of user data in one frame ● Security mechanisms ● ● ● ● ●
Start delimiter and End delimiter Parity bit Slip-free synchronization Frame Sequence Check (CRC) Hamming Distance = 4
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
9
Profibus Distributed Peripherals (DP) ● 3 Types of Stations ● DP Master Class1 (DPM1): Programmable controllers (PLC, PC, etc…) ● DP Master Class2 (DPM2): Development or diagnostic tool ● DP Slave: Peripheral device performing cyclic exchanges with its active station
● 3 Types of Profiles ● DP-V0: basic functionality of DP, including cyclic data exchange (implicit exchanges) station, module and channel-specific diagnostics ● DP-V1: DP-V0 features + on request data communication for parameter assignment (explicit exchange) alarm handling ● DP-V2: for isochronous mode and data exchange broadcast (slave-to-slave communication, dedicated for motion control)
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
10
Application Profile ● Device Variable & Profile Defined in GSD File ● General specifications ●Information on vendor and device names, Hardware & software versions, supported transmission rates … ● Master specifications ●Contain all master related parameters, such as: the maximum slave number that can be connected, or upload and download options. ● Or slaves specifications ● Contain all slave related specifications such as: the number and type of I/O channels, diagnostic texts & information on the available modules in the modular devices case.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
11
Standardized Profiles ● IO Profiles Defined by the Organization ● Profibus provides some profiles depending of the application to define an interoperability between similar devices for different vendors. ● Examples: ●PROFIdrive (Speed drive device) ● Low-voltage switchgear ● Encoders •ATV71 ● Panel devices (HMI) •TeSys U
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
•TeSys T
12
Data Exchanged INPUT
● Fixed Mapping ● PKW ● Reach any other data
PERIODIC
● Explicit Exchange
Bytes 0 & 1
Bytes 0 & 1
Bytes 2 & 3
Bytes 2 & 3
Bytes 4 & 5
Bytes 4 & 5
Bytes 6 & 7
PKW Bytes 0 & 1
Bytes 8 & 9
● Read / Write requests ● DPV1 only !
PKW Bytes 0 & 1 APERIODIC
OUPUT
PKW Bytes 2 & 3 PKW Bytes 4 & 5
PKW Bytes 2 & 3 PKW Bytes 4 & 5 PKW Bytes 6 & 7
PKW Bytes 6 & 7 Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
13
Configuration Parameters ● Parameter Telegram ● Configuration of the device thanks to the fieldbus ● Depends on the GSD
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
14
Programming Modbus with Unity Pro ● Profibus Remote Master
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
15
PRM: Profibus Remote Master ● Not a Simple Gateway ● Standalone Profibus Master ● Polled by any Unity based PLC with IO Scanning
● Configuration in the DTM Browser ● Configuration of the Master ● Configuration of Slave (3rd party DTM can be added)
● Automatic IO Scanning Line & IODDT Variable Creation ● Program it as it was an in rack module
● 3 Compatible DTMs ● Master DTM ● Generic Profibus Device DTM ● Comm DTM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
16
Hardware Description ● 4 leds for PRM and PROFIBUS diagnostic ● Embedded dual port Ethernet switch ● Daisy chain (loop in a next step) ● 2 status led / port
● Sub D9 PROFIBUS RS485 connector ● 9.6 Kbps to 12 Mbps
● External 24V power supply ● 2 rotary switch for Device_Name assignment (FDR) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
17
Typical Connections
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
18
FDT / DTM Configuration ● Field Device Tool ● Vendor tools integrated inside one tool ● Tools are Device Type Managers (DTM) Frame Application
● Benefit: Common Environment: ● User Management ● DTM Management ● Data Management ● Network Configuration ● Navigation HART
(Device Type Manager DTM)
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
HART
19
Device Tool Managers
Communication DTM
Communication Driver
Gateway DTM
Device DTM
BTM
Modbus, Ethernet, etc..
Gateway Driver
Device Driver
BTM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
20
DTM in Unity Pro ● DTM Browser ● Integrated DTM (implemented when module added from the PLC_Bus) ● Dedicated DTM (devices that can interact with Unity Pro application) ● Third Party DTM (Unity Pro used as any other FDT frame application)
● Tools – DTM Browser
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
21
Hardware Catalog ● DTM Database ● Tools Menu – Hardware Catalog
● Update Tool ● Used to add New devices inside the catalog ● DTM must be installed in Windows before
- DTM Config saved into STU or STA (not XEF) - DTM must be installed on the computer (otherwise project cannot be saved) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
22
DTM Transfer ● With Project Transfer ● Integrated DTM
● Direct Ethernet Communication ● Dedicated or Third Party DTM
PRM Switch
PLC
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
23
DTM Transfer for Non Integrated DTM ● From DTM Browser, Select Connect then Store data to device
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
24
PRM Master DTM ● Master DTM ● Dedicated DTM to be used with Unity Pro ● Profibus topology description by instantiating Device DTMs in the FDT frame browser ● Profibus network scan capability ● PLC I/O Scanner lines automatically configured in Unity Pro to scan the PRM process image ● Ready-to-use structured variables automatically created in Unity Pro for the Profibus devices ● Configuration saved as part of the Unity Pro application
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
25
PRM Master DTM ● Dedicated to Unity Pro
UNITY Pro V5.0
Ethernet
PRM
DP Class 1 Profibus DP
Input
Profibus PA
PRM master DTM Generic DTM
Device DTM
GSD file
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
26
PRM Generic Profibus Device DTM ● Generic Profibus Device DTM ● Enable the configuration of the device based on the GSD file
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
27
PRM CommDTM ● CommDTM ● Supervision & partial configuration of the PRM ● Can be used in Unity and any FDT application
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
28
Master DTM and Comm DTM ● Services Can Run in Parallel PRM Com DTM
UNITY Pro V5.0
Asset Management
Ethernet
PRM master DTM
PRM
DP Class 1 Profibus DP
Input
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Profibus PA
29
High availability with HSBY architectures compatibility
UNITY Pro V5.0
PLC “primary”
PLC “secondary” Asset Management
Ethernet
DP Class 1 Profibus DP
Input
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Profibus PA
30
Exercise ● PRM Master DTM (p6-17) – Install the PRM DTM – Add the PRM inside the Hardware Catalogue – Add the PRM inside a Unity Pro project
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
31
Dynamic Assignment ● IP Assignment Given By Servers
Switch
Request for IP @ Server
Switch
Your IP @ Client
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
32
BootP Server ● Server Has a Populated List of Devices ● Devices identified with their MAC address Device #1
My MAC address is 00.80.F4.FF.00.D5, Can I get an IP Address?
Sure! You are listed in my address table. Take this address: 192.168.0.23
Device #2
Master (Server) 00.80.F4.FF.00.D5
192.168.0.23
00.80.F4.FF.44.21
192.168.0.81
00.80.F4.FF.F2.15
192.168.0.40
My name is 45.80.F4.FF.33.12, Can I get an IP Address?
Sorry, you are not listed into my address table. Use your default IP address
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
33
BootP Server (Cont.) ● Example in Unity Pro
● Limitation: Device Cannot Be Changed without Reconfiguration ● As each device has a unique MAC address, replacing a failed device needs a reconfiguration of the BootP Address Server table.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
34
DHCP Server ● Same As BootP but Based on Role Name ● User configurable names used instead of MAC Addresses Device #1
My name is STBNIP2212_023, Can I get an IP Address?
Sure! You are listed in my address table. Take this address: 192.168.0.23
Device #2
Master (Server) STBNIP2212_023
192.168.0.23
TesysT_046
192.168.0.87
ATV71_555
192.168.0.21
My name is TesysT_072, Can I get an IP Address?
Sorry, you are not listed into my address table. Use your default IP address
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
35
DHCP How To Create Role Names ● Depends on The Device ● Using embedded HMI (ex: ATV71) ● Using web based applications (ex: Advantys STB) ● Using dedicated applications (ex: Unity Pro) ● Using hardware switches (ex: Tesys T, Advantys STB)
● Hardware Switches Example: ● Base name + Custom number derived from Switches STBNIP2212_123
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
36
DHCP Server ● Example with Unity Pro
● Advantage: Easiness of Replacement ● Compared to the BootP method, replacing a faulty device with DHCP doesn’t need to reconfigure the PLC application. Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
37
FDR Server ● Additional Feature of A DHCP Server. ● Send the stored configuration inside a replaced device Master (Server)
Device #1 My name is TesysT_072, Save my settings now!
TesysT_072
192.168.0.87
Saved Config. of TesysT_072
Device #1
My name is TesysT_072, Can I get an IP Address?
New Device
Sure! You are listed in my table. Take this address: 192.168.0.87 Moreover, I found a configuration corresponding to your role name. Here is your new configuration.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Master (Server) TesysT_072
192.168.0.87
Saved Config. of TesysT_072
38
PRM General Settings ● IP Used For DTM Connection ● DHCP Entry Automatically Copied in the Network Settings ● Name Must Match with Rotary Switches
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
39
Implicit Exchange: IO Scanning ● Table of Words Exchanged Automatically Between Master & Slave
Master / Client
Slave / Server Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
40
IO Scanning ● Filling the Different Fields
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
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IO Scanning (Cont.) ● Debug View Online Mode (M340 and Premium Only)
● IODDT Can Be Configured
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
42
IO Scanning Specific Integration Tool ● Only with Compatible Devices ● PRM / OTB / STB
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
43
Transfer Organization ● Transfer Unity Application to the M340 ● Transfer PRM Configuration Through Ethernet
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
44
Exercises ● PRM Configuration (p6-32) – Set the MAC address – Set the IP address: 192.168.0.X3 – Create the role name with the rotary switches – Activate the DHCP ● IO Scanning Configuration (p6-42) – Add a network – Configure the IP address of the M340: 192.168.0.X5 – Set the appropriate line in the IO Scanning – Verify the address server ● Transfer the Configuration (p6-47) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
45
PRM Configuration Settings ● Basic Settings ● Baudrate, stations range
● Advanced Settings ● Advanced parameters automatically calculated – to be changed only if needed
● IO Scanning ● Behavior in regards with the IO Scanning
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
46
PRM Basic Settings
● Baudrate ● PRM Master Address ● Used in case of multimaster
● Highest Station Address ● To be adapted to the network
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
47
PRM Advanced Settings ● TTR Management ● Token circulation (Multimaster)
● Error Management ● Other Timing Management ● Used if gateways, repeaters..
● Calculated Timing ● Device Watchdogs ● Profibus Cycle Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
48
PRM IO Scanning Settings ● IO Scanning Automatic Implementation
● Scan Optimization
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
49
PRM Management ● Dedicated Function Blocks Library ● PRM_MGT ● Used to start the PRM master ● Depends on the PLC
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
50
Exercises ● Modifying Some Settings (p6-54) – Set the PRM watchdog to 5sec – Set the Modbus Health timeout to 3sec – Test the new settings
● Enable the Profibus Master (p6-58) – Install the Profibus Library – Implement the PRM_MGT FB – Insert the appropriate variables – Operate the Master
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
51
Add Devices In The Database ● Add Device with GSD ● Generic GSD DTM will be created from GSD.
● Add Device from DTM ● Install the DTM and Update the Catalog
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
52
Add Devices In The Configuration ● Device Menu – Add Device ● Fieldbus Discovery
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
53
Device Profibus Parameters ● Device Address ● DPV1 Settings ● Profibus Settings
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
54
Device Parameters ● Device With DTM ● Parameters are done using the proprietary DTMs
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
55
Device Parameters ● Device From GSD ● Standard parameters, module to be configured
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
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Process Variables ● Custom Names
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Online Diagnostics ● All Bus Overview
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Online Diagnostics (Cont.) ● Process Variables Diagnostic
● Device Diagnostics
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Online Diagnostics (Cont.) ● I/O Values
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60
Online Diagnostics (Cont.) ● Device DTM Diagnostic
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61
Exercises ● Add a Device from a GSD (p6-68) – Add the GSD in the library – Add the device in the DTM Browser ● Configure a Device from GSD (p6-75) – Change the address of the device to 5 – Configure the modules – Configure the module’s parameter: fallback mode – Update the IO Scanning – Connect and test ● Online Diagnostics (p6-81) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
62
DPV1 Explicit Exchange ● Function Blocks ● PRM_ID ●Set the ID of which PRM to use ● RDREC ●Execute a read parameter request ● WRREC ●Execute a write parameter request
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
63
DPV1 Explicit Exchange (Cont.) ● RDIAG ●Read diagnostic when the device requires it ●Reset the diagnostic bit in the PRM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
64
Exercises ● Diagnostic Management (p6-87) – Create a diagnostic by tripping the Tesys U – Read the diagnostic and reset the bit using RDIAG ● Read Data Record (p6-89) – Implement the RDREC to read the ID register ● Write Data Record (p6-81) – Implement the WRREC – Write the configuration register Fallback Behaviour
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
65
Limitations Of The PRM ● PRM is not compatible with EIP scanners ● Modbus protocol is compatible, but no link between PROFIBUS Master DTM and EIP configuration (EIP master DTM must evolve to accept a future PROFIBUS gateway DTM)
● Limited redundant architectures ● No daisy chain loop, ● No dual master, no dual Ethernet attachment
● Miscellaneous
● No online modification of the PROFIBUS configuration ● No import/export of the FDT/DTM configuration ● Empty Terminal Service depends of PLC memory capacity and number of DTMs ●Typical PROFIBUS DTM consumes 20 to 30 Kbyte ●If too large, possibility not to embed the ETS DTM data into the application
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66
Profibus ● Main Features Reminder: ● up to 100m at 12Mbit/s, 1200m w/o repeaters at 93,75kbit/s ● response time < 2ms at 12Mbit/s ● up to 126 devices, up to 32 per segment ● maximum 244 byte as user data per telegram ● shield used as reference point ● error detection: good (HD=4) ● low process data flexibility
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67
Profibus Features
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
2
Introduction ● Profibus = PROcess FIeld BUS ● Initialized in 1987 by the German Ministry for Research and Technological Development. ● Now managed by an association of PROFIBUS Manufacturers, Users and research institutions ● More than 1100 members worldwide (Profibus International)
● Conforms to standard EN 50 170 ● 3 Versions of Profibus ● Profibus FMS ● Profibus PA ● Profibus DP http://www.profibus.org Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
3
Profibus Versions
Profinet
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
4
Layers Used in ISO Model ● 3 Layers used for Profibus APPLICATION
Cyclical and Acyclical data services
PRESENTATION
Not used
SESSION
Not used
TRANSPORT
Not used
NETWORK
Not used
DATALINK
Serial link Master/Slave or Token Ring if multimaster
PHYSICAL
RS 485 or Fiber Optic
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
5
Physical Layer ● RS485 or Fiber Optic ● Baudrate from 9.6 Kbps to 12 Mbits ● Max distance without Repeaters: Depends on the Baudrate Bit rate
Length (cable type A)
9.6 Kb/s 187.5 Kb/s
500 Kb/s
1,5 Mb/s
3 Mb/s
19.2 Kb/s
6 Mb/s
93.75 Kb/s
12 Mb/s
1200 m
1000 m
400 m
200 m
100 m
● Maximum number of stations: 32 without repeaters, 122 with 3 repeaters ● Address range : 1 to 125 ● Address 126 : reserved for address assignment via the bus ● Address 127 : reserved for broadcast and multicast
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
6
Connections ● SubD 9 or Open Connector
VP*
(6)
B
(3)
A
(8)
DGnd* (5)
390 Ω
Data line B
390 Ω
220 Ω
Data line A
220 Ω 390 Ω
390 Ω
A (8)
B (3)
Device 2
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
A (8)
VP*
(6)
B
(3)
A
(8)
DGnd* (5)
B (3)
Device 3
7
Link Layer ● Passive stations (slaves) uses the master-slave concept. ● Master polls the slaves one by one. ● The transmit message send to the slaves is called « PPO » (Parameter Process Object).
● Active stations communication is based on the token ring concept. Active stations = master devices
Passive stations = slaves devices Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
8
Frame Transmission Start Delimiter
Length
Destination address
….
User Data (max. 244 bytes)
Frame check sequence
End delimiter
● Up to 244 bytes of user data in one frame ● Security mechanisms ● ● ● ● ●
Start delimiter and End delimiter Parity bit Slip-free synchronization Frame Sequence Check (CRC) Hamming Distance = 4
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
9
Profibus Distributed Peripherals (DP) ● 3 Types of Stations ● DP Master Class1 (DPM1): Programmable controllers (PLC, PC, etc…) ● DP Master Class2 (DPM2): Development or diagnostic tool ● DP Slave: Peripheral device performing cyclic exchanges with its active station
● 3 Types of Profiles ● DP-V0: basic functionality of DP, including cyclic data exchange (implicit exchanges) station, module and channel-specific diagnostics ● DP-V1: DP-V0 features + on request data communication for parameter assignment (explicit exchange) alarm handling ● DP-V2: for isochronous mode and data exchange broadcast (slave-to-slave communication, dedicated for motion control)
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
10
Application Profile ● Device Variable & Profile Defined in GSD File ● General specifications ●Information on vendor and device names, Hardware & software versions, supported transmission rates … ● Master specifications ●Contain all master related parameters, such as: the maximum slave number that can be connected, or upload and download options. ● Or slaves specifications ● Contain all slave related specifications such as: the number and type of I/O channels, diagnostic texts & information on the available modules in the modular devices case.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
11
Standardized Profiles ● IO Profiles Defined by the Organization ● Profibus provides some profiles depending of the application to define an interoperability between similar devices for different vendors. ● Examples: ●PROFIdrive (Speed drive device) ● Low-voltage switchgear ● Encoders •ATV71 ● Panel devices (HMI) •TeSys U
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
•TeSys T
12
Data Exchanged INPUT
● Fixed Mapping ● PKW ● Reach any other data
PERIODIC
● Explicit Exchange
Bytes 0 & 1
Bytes 0 & 1
Bytes 2 & 3
Bytes 2 & 3
Bytes 4 & 5
Bytes 4 & 5
Bytes 6 & 7
PKW Bytes 0 & 1
Bytes 8 & 9
● Read / Write requests ● DPV1 only !
PKW Bytes 0 & 1 APERIODIC
OUPUT
PKW Bytes 2 & 3 PKW Bytes 4 & 5
PKW Bytes 2 & 3 PKW Bytes 4 & 5 PKW Bytes 6 & 7
PKW Bytes 6 & 7 Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
13
Configuration Parameters ● Parameter Telegram ● Configuration of the device thanks to the fieldbus ● Depends on the GSD
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
14
Programming Modbus with Unity Pro ● Profibus Remote Master
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
15
PRM: Profibus Remote Master ● Not a Simple Gateway ● Standalone Profibus Master ● Polled by any Unity based PLC with IO Scanning
● Configuration in the DTM Browser ● Configuration of the Master ● Configuration of Slave (3rd party DTM can be added)
● Automatic IO Scanning Line & IODDT Variable Creation ● Program it as it was an in rack module
● 3 Compatible DTMs ● Master DTM ● Generic Profibus Device DTM ● Comm DTM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
16
Hardware Description ● 4 leds for PRM and PROFIBUS diagnostic ● Embedded dual port Ethernet switch ● Daisy chain (loop in a next step) ● 2 status led / port
● Sub D9 PROFIBUS RS485 connector ● 9.6 Kbps to 12 Mbps
● External 24V power supply ● 2 rotary switch for Device_Name assignment (FDR) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
17
Typical Connections
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
18
FDT / DTM Configuration ● Field Device Tool ● Vendor tools integrated inside one tool ● Tools are Device Type Managers (DTM) Frame Application
● Benefit: Common Environment: ● User Management ● DTM Management ● Data Management ● Network Configuration ● Navigation HART
(Device Type Manager DTM)
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
HART
19
Device Tool Managers
Communication DTM
Communication Driver
Gateway DTM
Device DTM
BTM
Modbus, Ethernet, etc..
Gateway Driver
Device Driver
BTM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
20
DTM in Unity Pro ● DTM Browser ● Integrated DTM (implemented when module added from the PLC_Bus) ● Dedicated DTM (devices that can interact with Unity Pro application) ● Third Party DTM (Unity Pro used as any other FDT frame application)
● Tools – DTM Browser
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
21
Hardware Catalog ● DTM Database ● Tools Menu – Hardware Catalog
● Update Tool ● Used to add New devices inside the catalog ● DTM must be installed in Windows before
- DTM Config saved into STU or STA (not XEF) - DTM must be installed on the computer (otherwise project cannot be saved) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
22
DTM Transfer ● With Project Transfer ● Integrated DTM
● Direct Ethernet Communication ● Dedicated or Third Party DTM
PRM Switch
PLC
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
23
DTM Transfer for Non Integrated DTM ● From DTM Browser, Select Connect then Store data to device
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
24
PRM Master DTM ● Master DTM ● Dedicated DTM to be used with Unity Pro ● Profibus topology description by instantiating Device DTMs in the FDT frame browser ● Profibus network scan capability ● PLC I/O Scanner lines automatically configured in Unity Pro to scan the PRM process image ● Ready-to-use structured variables automatically created in Unity Pro for the Profibus devices ● Configuration saved as part of the Unity Pro application
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
25
PRM Master DTM ● Dedicated to Unity Pro
UNITY Pro V5.0
Ethernet
PRM
DP Class 1 Profibus DP
Input
Profibus PA
PRM master DTM Generic DTM
Device DTM
GSD file
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
26
PRM Generic Profibus Device DTM ● Generic Profibus Device DTM ● Enable the configuration of the device based on the GSD file
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
27
PRM CommDTM ● CommDTM ● Supervision & partial configuration of the PRM ● Can be used in Unity and any FDT application
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
28
Master DTM and Comm DTM ● Services Can Run in Parallel PRM Com DTM
UNITY Pro V5.0
Asset Management
Ethernet
PRM master DTM
PRM
DP Class 1 Profibus DP
Input
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Profibus PA
29
High availability with HSBY architectures compatibility
UNITY Pro V5.0
PLC “primary”
PLC “secondary” Asset Management
Ethernet
DP Class 1 Profibus DP
Input
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Profibus PA
30
Exercise ● PRM Master DTM (p6-17) – Install the PRM DTM – Add the PRM inside the Hardware Catalogue – Add the PRM inside a Unity Pro project
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
31
Dynamic Assignment ● IP Assignment Given By Servers
Switch
Request for IP @ Server
Switch
Your IP @ Client
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
32
BootP Server ● Server Has a Populated List of Devices ● Devices identified with their MAC address Device #1
My MAC address is 00.80.F4.FF.00.D5, Can I get an IP Address?
Sure! You are listed in my address table. Take this address: 192.168.0.23
Device #2
Master (Server) 00.80.F4.FF.00.D5
192.168.0.23
00.80.F4.FF.44.21
192.168.0.81
00.80.F4.FF.F2.15
192.168.0.40
My name is 45.80.F4.FF.33.12, Can I get an IP Address?
Sorry, you are not listed into my address table. Use your default IP address
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
33
BootP Server (Cont.) ● Example in Unity Pro
● Limitation: Device Cannot Be Changed without Reconfiguration ● As each device has a unique MAC address, replacing a failed device needs a reconfiguration of the BootP Address Server table.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
34
DHCP Server ● Same As BootP but Based on Role Name ● User configurable names used instead of MAC Addresses Device #1
My name is STBNIP2212_023, Can I get an IP Address?
Sure! You are listed in my address table. Take this address: 192.168.0.23
Device #2
Master (Server) STBNIP2212_023
192.168.0.23
TesysT_046
192.168.0.87
ATV71_555
192.168.0.21
My name is TesysT_072, Can I get an IP Address?
Sorry, you are not listed into my address table. Use your default IP address
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
35
DHCP How To Create Role Names ● Depends on The Device ● Using embedded HMI (ex: ATV71) ● Using web based applications (ex: Advantys STB) ● Using dedicated applications (ex: Unity Pro) ● Using hardware switches (ex: Tesys T, Advantys STB)
● Hardware Switches Example: ● Base name + Custom number derived from Switches STBNIP2212_123
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
36
DHCP Server ● Example with Unity Pro
● Advantage: Easiness of Replacement ● Compared to the BootP method, replacing a faulty device with DHCP doesn’t need to reconfigure the PLC application. Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
37
FDR Server ● Additional Feature of A DHCP Server. ● Send the stored configuration inside a replaced device Master (Server)
Device #1 My name is TesysT_072, Save my settings now!
TesysT_072
192.168.0.87
Saved Config. of TesysT_072
Device #1
My name is TesysT_072, Can I get an IP Address?
New Device
Sure! You are listed in my table. Take this address: 192.168.0.87 Moreover, I found a configuration corresponding to your role name. Here is your new configuration.
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
Master (Server) TesysT_072
192.168.0.87
Saved Config. of TesysT_072
38
PRM General Settings ● IP Used For DTM Connection ● DHCP Entry Automatically Copied in the Network Settings ● Name Must Match with Rotary Switches
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
39
Implicit Exchange: IO Scanning ● Table of Words Exchanged Automatically Between Master & Slave
Master / Client
Slave / Server Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
40
IO Scanning ● Filling the Different Fields
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
41
IO Scanning (Cont.) ● Debug View Online Mode (M340 and Premium Only)
● IODDT Can Be Configured
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
42
IO Scanning Specific Integration Tool ● Only with Compatible Devices ● PRM / OTB / STB
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
43
Transfer Organization ● Transfer Unity Application to the M340 ● Transfer PRM Configuration Through Ethernet
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
44
Exercises ● PRM Configuration (p6-32) – Set the MAC address – Set the IP address: 192.168.0.X3 – Create the role name with the rotary switches – Activate the DHCP ● IO Scanning Configuration (p6-42) – Add a network – Configure the IP address of the M340: 192.168.0.X5 – Set the appropriate line in the IO Scanning – Verify the address server ● Transfer the Configuration (p6-47) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
45
PRM Configuration Settings ● Basic Settings ● Baudrate, stations range
● Advanced Settings ● Advanced parameters automatically calculated – to be changed only if needed
● IO Scanning ● Behavior in regards with the IO Scanning
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
46
PRM Basic Settings
● Baudrate ● PRM Master Address ● Used in case of multimaster
● Highest Station Address ● To be adapted to the network
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
47
PRM Advanced Settings ● TTR Management ● Token circulation (Multimaster)
● Error Management ● Other Timing Management ● Used if gateways, repeaters..
● Calculated Timing ● Device Watchdogs ● Profibus Cycle Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
48
PRM IO Scanning Settings ● IO Scanning Automatic Implementation
● Scan Optimization
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
49
PRM Management ● Dedicated Function Blocks Library ● PRM_MGT ● Used to start the PRM master ● Depends on the PLC
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
50
Exercises ● Modifying Some Settings (p6-54) – Set the PRM watchdog to 5sec – Set the Modbus Health timeout to 3sec – Test the new settings
● Enable the Profibus Master (p6-58) – Install the Profibus Library – Implement the PRM_MGT FB – Insert the appropriate variables – Operate the Master
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
51
Add Devices In The Database ● Add Device with GSD ● Generic GSD DTM will be created from GSD.
● Add Device from DTM ● Install the DTM and Update the Catalog
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
52
Add Devices In The Configuration ● Device Menu – Add Device ● Fieldbus Discovery
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
53
Device Profibus Parameters ● Device Address ● DPV1 Settings ● Profibus Settings
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
54
Device Parameters ● Device With DTM ● Parameters are done using the proprietary DTMs
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
55
Device Parameters ● Device From GSD ● Standard parameters, module to be configured
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
56
Process Variables ● Custom Names
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
57
Online Diagnostics ● All Bus Overview
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
58
Online Diagnostics (Cont.) ● Process Variables Diagnostic
● Device Diagnostics
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
59
Online Diagnostics (Cont.) ● I/O Values
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
60
Online Diagnostics (Cont.) ● Device DTM Diagnostic
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
61
Exercises ● Add a Device from a GSD (p6-68) – Add the GSD in the library – Add the device in the DTM Browser ● Configure a Device from GSD (p6-75) – Change the address of the device to 5 – Configure the modules – Configure the module’s parameter: fallback mode – Update the IO Scanning – Connect and test ● Online Diagnostics (p6-81) Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
62
DPV1 Explicit Exchange ● Function Blocks ● PRM_ID ●Set the ID of which PRM to use ● RDREC ●Execute a read parameter request ● WRREC ●Execute a write parameter request
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
63
DPV1 Explicit Exchange (Cont.) ● RDIAG ●Read diagnostic when the device requires it ●Reset the diagnostic bit in the PRM
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
64
Exercises ● Diagnostic Management (p6-87) – Create a diagnostic by tripping the Tesys U – Read the diagnostic and reset the bit using RDIAG ● Read Data Record (p6-89) – Implement the RDREC to read the ID register ● Write Data Record (p6-81) – Implement the WRREC – Write the configuration register Fallback Behaviour
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
65
Limitations Of The PRM ● PRM is not compatible with EIP scanners ● Modbus protocol is compatible, but no link between PROFIBUS Master DTM and EIP configuration (EIP master DTM must evolve to accept a future PROFIBUS gateway DTM)
● Limited redundant architectures ● No daisy chain loop, ● No dual master, no dual Ethernet attachment
● Miscellaneous
● No online modification of the PROFIBUS configuration ● No import/export of the FDT/DTM configuration ● Empty Terminal Service depends of PLC memory capacity and number of DTMs ●Typical PROFIBUS DTM consumes 20 to 30 Kbyte ●If too large, possibility not to embed the ETS DTM data into the application
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
66
Profibus ● Main Features Reminder: ● up to 100m at 12Mbit/s, 1200m w/o repeaters at 93,75kbit/s ● response time < 2ms at 12Mbit/s ● up to 126 devices, up to 32 per segment ● maximum 244 byte as user data per telegram ● shield used as reference point ● error detection: good (HD=4) ● low process data flexibility
Industrial Communication Course with Unity Pro - Profibus Schneider Electric | Industry Business | Training | E. Pauchet – V5.0 – June 2010
67
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