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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.

The input module data can be read by the CPU and by the fieldbus side.

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