WAGO-I/O-SYSTEM 750 XTR
Function Description 81
750-352/040-000 FC ETHERNET G3 XTR
Manual
Version 1.3.0
Figure 40: Memory Areas and Data Exchange
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The fieldbus coupler process image contains the physical data for the bus
modules.
These have a value of 0 ... 255 and word 512 ... 1275.
1
The input module data can be read by the CPU and by the fieldbus side.
2
Likewise, data can be written to the output modules from the CPU and the
fieldbus side.
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In addition, all output data is mirrored in the FC ETHERNET G3 XTR to a
memory area with the address offset 0x0200 and 0x1000. This allows output
values to be read back in by adding 0x0200 or 0x1000 to the MODBUS address.
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7.3.1
Addressing
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Module inputs and outputs in a fieldbus coupler are addressed internally as soon
as they are started. The order in which the connected modules are addressed
depends on the type of module that is connected (input module, output module).
The process image is formed from these addresses.
The physical arrangement of the I/O modules in the fieldbus node is arbitrary.
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7.3.1.1 Addressing of I/O Modules
Addressing first references complex modules (modules that occupy several
bytes) in accordance with their physical order downstream of the fieldbus
coupler/controller; i.e., they occupy addresses starting from word 0.
