Process Data Architecture For Modbus/Tcp - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
13.2

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.
The structure of the process data mapping is identical for the PFC process image
of the programmable fieldbus controller.
I/O Modules 335
Manual
1.5.0