DEUTSCHMANN AUTOMATION UNIGATE CL - DeviceNet Instruction Manual page 28

Implemented protocols in UNIGATE® CL with Universal Script Deutschmann Automation GmbH & Co. KG
Data structure
10.5.1.1 Example: FC1 + FC2
A Modbus Master (external device) sends a request with function code 1 or 2.
Note: 
Modbus Master Request Address (High + Low)
Address request 01 .. 08 will always be on address 01.
Address request 09 .. 16 will always be on address 09.
Address request 17 .. 24 will always be on 17.
...
Configuration:

® 
Fieldbus sends to UNIGATE
08 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...

Note: The 1. byte (0x08) is the fieldbus length byte. This means only the following 8 Bytes are
®
stored in the UNIGATE .
®
Connected Modbus Master sends request to the RS232/484 side of the UNIGATE :
Start-Address 0001, Length 56 (38h), FC1 (-Read Coil Status)
[01] [01] [00] [00] [00] [38] [3d] [d8]
®
UNIGATE sends response via RS232/485:
[01] [01] [07] [01] [02] [03] [04] [05] [06] [07] [6b] [c5]
Display of the data in the Modbus Master (FC1):
Example: StartAddress 0008, Length 80, FC2 (Read Input Status)
[01] [02] [00] [07] [00] [50] [c9] [f7]
® ®
28 UNIGATE fieldbus gateway UNIGATE CL - DeviceNet V. 2.8 29.6.20
™