DEUTSCHMANN AUTOMATION UNIGATE CL - DeviceNet Instruction Manual page 38

Implemented protocols in UNIGATE® CL with Universal Script
Thereby the addressed slave holds the following data in its registers.:
register
address
40000
40001
40002
40003
40004
register = 1 Word = 2 Byte
In the documentation of some applications, an Offset + 1 at the address is assu-
med. The notation for address "40000" stands for "holding register". But in acuta-
lity address 0x0000 is meant by it. This is not uniform in the Modbus-Slave
documentations. (E.g. the PC simulation tool "ModSim32" has this offset).


If a valid response is received, the four byte (No. Of Points = 2) process value (Modbus-Data) will
be copied to the fieldbus from "Fieldbus Map Adr(Byte)" = 0 on.

Fieldbus data from UNIGATE
51 13 02 02 03 03 30 04 01 00 01 00 00 00 02 57 00 01 03 00 00 00 00 00 00 00 ...
Byte 0 = Trigger-Byte „0x51"
Byte 1 = Fieldbus length byte „0x13"
Byte 2 = Process value (High) from StartAdr „0x02"
Byte 3 = Process value (Low) from StartAdr „0x02"
Byte 4 = Process value (High) from StartAdr + 1 „0x03"
Byte 5 = Prozess value (Low) from StartAdr + 1 „0x03"
10.6.3.4 Example: Read input registers FC4
(see chapter 10.6.3.3, Example: Read multiple register FC3)
10.6.3.5 Example: Force single coil FC5
At FC5 a bit is set in the Modbus slave, if the mapped fieldbus byte is bigger (>) than NULL.

Configuration
Note: No. of Points is not required
Another example for when a second request is configured:
38 UNIGATE
value(hex)
0x0000
0x0202
0x0303
0x0000
0x0000
®
-> SPS:
Modbus Slave(impact)SPS sends 
Fieldbus data (reason)
®
fieldbus gateway UNIGATE
Deutschmann Automation GmbH & Co. KG
®
CL - DeviceNet V. 2.8
™
29.6.20