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WAGO-I/O-SYSTEM 750
I/O Modules 225
758-874/000-131 WAGO-I/O-IPC-C6
Manual
Version 1.0.0
Pos: 60.1 /Serie 750 (WAGO-I/O-SYSTEM)/Prozessabbild Mapping/ETHERNET - EtherNet/IP - MODBUS/TCP/PA ETHERNET - MODBUS/TCP Einleitung Prozessdatenaufbau (750-342, -830, -842, -849, FBC/PFC) @ 5\mod_1253542489968_21.doc @ 41903 @ 2 @ 1
18.2
Process Data Architecture for MODBUS/TCP
With some I/O modules, the structure of the process data is fieldbus specific.
MODBUS/TCP process image uses a word structure (with word alignment). The
internal mapping method for data greater than one byte conforms to the Intel
format.
The following section describes the process image for various WAGO-I/O-
SYSTEM 750 and 753 I/O modules with MODBUS/TCP.
Equipment damage due to incorrect address!
Depending on the specific position of an I/O module in the fieldbus node, the
process data of all previous byte or bit-oriented modules must be taken into
account to determine its location in the process data map.
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The structure of the process data mapping is identical for the PFC process image
of the programmable fieldbus controller.
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