Data Exchange Between Modbus/Tcp Master And I/O Modules; Table 30: Data Width For I/O Modules - WAGO -I/O-SYSTEM 750 XTR Manual

82 Function Description
Following these is the data for the remaining modules, compiled in bytes
(modules that occupy less than one byte). In this process, byte by byte is filled
with this data in the physical order. As soon a complete byte is occupied by the
bit oriented modules, the process begins automatically with the next byte.
Hardware changes can result in changes of the process image!
I f the hardware configuration is changed and/or expanded; this may result in a
new process image structure. In this case, the process data addresses also
change. If adding modules, the process data of all previous modules has to be
taken into account.
Observe process data quantity!
For the number of input and output bits or bytes of the individual IO modules
please refer to the corresponding description of the IO modules.

Table 30: Data Width for I/O Modules

Data width > 1 byte (channel)
Analog input modules
Analog output modules
Input modules for thermocouples
Input modules for resistor sensors
Pulse width output modules
Interface modules
Up/down counters
I/O modules for angle and distance
measurement
Pos : 64.12 /Serie 750 ( WAGO-I/O-SYST EM)/Funkti onsbesc hrei bung/D atenaustausch/Datenaus tausc h - D atenaustausc h MOD BUS/TCP-M aster und I/O-M odule @ 6\mod_1256049861734_21.doc x @ 43310 @ 3 @ 1
7.3.2 Data Exchange between MODBUS/TCP Master and I/O
Modules
Data exchange between the MODBUS/TCP Master and the I/O modules is
conducted using the MODBUS functions implemented in the controller by means
of bit-by-bit or word-by-word reading and writing routines.
There are 4 different types of process data in the controller:
• Input words
• Output words
• Input bits
• Output bits
Manual
Version 1.3.0
WAGO-I/O-SYSTEM 750 XTR
750-352/040-000 FC ETHERNET G3 XTR
Data width = 1 bit (channel)
Digital input modules
Digital output modules
Digital output modules with
diagnostics (2 bits/channel)
Supply modules with fuse
carrier/diagnostics
Solid-state load relays
Relay output modules