PROFIBUS Addressing
In PROFIBUS, the bus coupler is a modular DP server. PROFIBUS addresses modular devices using slot and index addressing. TeSys™ island divides the slot addressing space into two regions, one for avatars and one for devices. Slot 1 is used for the bus coupler and System Avatar. Within each slot, index values are used to access the different datasets.
After importing the General Station Description Markup Language (GSDML) file into your programming environment, add a TeSys island instance from the hardware catalog. The TeSys island is created with a System Avatar but no other modules.
Follow the instructions for your programming environment to populate the empty slots with avatars and devices using the information in PROFIBUS Slot Ranges below. For example:
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In CoDeSys v3.5, right click on an empty slot and choose Plug Device.
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Select the appropriate avatar or device from the catalog.
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When the island is fully defined, start creating tags for the data you need to access for each avatar.
TeSys™ island applies the slot ranges for physical and virtual modularity shown in the following table:
PROFIBUS Slot Ranges
| Item | Slot | Comment |
|
Bus Coupler / System Avatar |
1 | — |
|
Avatars |
2–22 |
Device, Load, and Application avatars |
|
Bus Devices |
101–121 |
Digital I/O Module (DIOM) Analog I/O Module (AIOM) Starters SIL* Starters Power Interface Module (PIM) SIL Interface Module (SIM) Voltage Interface Module (VIM) |
| Not Applicable | 0, 23–99, 122–254 |
These slots are not used with TeSys island. |
Example of Avatar Numbering
|
Order of Avatar in Digital Tool |
PROFIBUS Avatar Slot |
Description |
Physical Order in island |
||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |||
| 1 | 1 |
System |
BC |
— |
— |
VIM |
— |
— |
SIM |
— |
— |
| 2 | 2 |
AIOM |
— |
AIOM |
— |
— |
— |
— |
— |
— |
— |
| 3 | 3 |
Motor Two Directions – SIL Stop, W. Cat 1/2* |
— |
— |
— |
— |
SIL Starter |
SIL Starter |
— |
— |
— |
| 4 | 4 |
Motor One Direction |
— |
— |
— |
— |
— |
— |
— |
Starter |
— |
| 5 | 5 |
Power Interface with I/O (Control) |
— |
— |
DIOM |
— |
— |
— |
— |
— |
PIM |
Example of PROFIBUS Physical Device Slots
| Physical Order in island | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
| PROFIBUS Physical Device Slot | 0 | 101 | 102 | 103 | 104 | 105 | 106 | 107 | 108 |
DPV0 is used for configuration of the PROFIBUS connection, diagnostics related to the PROFIBUS communications, and for cyclic data exchange. DPV1 is used to exchange the acyclic datasets for avatars and devices.
As described in IEC 61158-5-3 §6.1.3.2.3.2 Module, slots not used by the configuration of the system are registered as empty slots and assigned Input and Output data lengths of 0, and identifier byte 0x00.
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Each module is addressed by a slot number (1 to 254). Numbering is without gaps, ascending, beginning with 1. If a slot is not occupied with a module, an empty slot is registered under the corresponding slot number in the configuration.
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For each module, a configuration identifier has to be assigned. Numbering is without gaps, ascending, beginning with 0. If a slot is not occupied with a module, a configuration identifier with the Input and Output Data length of 0 has to be assigned in the configuration (empty slot).
The TeSys island PROFIBUS interface recognizes all unused slots as empty, with assigned Input and Output data lengths of 0 and identifier byte value of 0x00.
The following table provide the values for TeSys island PROFIBUS interface MS1 (DPV1) communication protocol (acyclic communication with PROFIBUS Class 1 client (controller)).
PROFIBUS Interface MS1 DPV1 Protocol Values
|
Service Access Point (SAP) |
Name |
|---|---|
| 72 |
Idle |
| 94 |
DPV1_Read |
| 95 |
DPV1_ Write |