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29.6.20
UNIGATE
®
Fieldbus Gateway UNIGATE
®
CL - MPI V. 3.1
27
Deutschmann Automation GmbH & Co. KG
Implemented protocols in UNIGATE® CL with Universal Script
Display of the process data in the Modbus Master:
10.3.1.3 Example: Write Single Coil FC5
The Fieldbus Master sent the following data to the UNIGATE
®
once:
07 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 20 20 20...
1.
Byte = Fieldbus length byte
The following 7 byte are stored in the UNIGATE
®
, the rest is not overwritten.
With FC1 and the coil length = 80 (10 Bytes) a Modbus Master reads out the following data:
The fieldbus output data is only updated if it’s triggered via a write command from the RS side.
For example via FC 5 :
Address 0002 stays unchanged on 0, however, the fieldbus output data is updated.
After a reset they are NULL (1st row) at first and are then updated (2nd row):