WAGO 750-341 Manual page 179

Input code: MODBUS function code
The following five digits specify the channel number of the consecutively
numbered digital or analog input and/or output channels.
Examples:
-
-
Application example:
Thus, the digital input channel 2 of the above node "Measuring data" can be
read out with the input: "Measuring data. 0 0000 2".
Fig. 8-1: Example of user software
More information
Please refer to the respective SCADA product manual for a detailed
description of the particular software operation.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Visualization and control using SCADA software
FC1 ! read coils
0
FC2 ! read input discretes
1
FC3 ! read multiple registers
3
FC4 ! read input registers
4
Read the first digital input:
Read the second analog input:
Application examples
Reading of several input bits
Reading of several input bits
Reading of several input registers
Reading of an individual input register
i.e. 0 0000 1
i.e. 3 0000 2
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