Structure of the in- and output data for Profibus (from firmware WH)
The ID 179 (hex: 0xB3), ( Data consistence over 4 Byte) is used.
Outputs
Byte
D0
D1
D2
D3
Description
Output byte0
Output byte1
Output byte2
Output byte3
Inputs
Byte
D0
D1
D2
D3
Description
Input byte0
Input byte1
Input byte2
Input byte3
For the ID 188 (hex.: 0xBC), Data consistence over 6 Byte is used, input and output data are now as follows:
Outputs
Byte
D0
D1
D2
D3
D4
D5
Description
Control byte
Output byte0
Output byte1
Output byte4
Output byte2
Output byte3
Inputs
Byte
D0
D1
D2
D3
D4
D5
Description
Statusbyte
Input byte0
Input byte1
Input byte4
Input byte2
Input byte3
For a S7 PLC the function code SFC14 and SFC15 must be used because the data length is more than 4.
Attention:
The control byte allows the changing of the registers of the module. It must always be 0 in order to avoid a change in the registers. A wrong mapping can change the function of the module!
Dataexchange module | 5 |
