Addressing of I/O Modules. WAGO Controller Modbus TCP

98 Function Description

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7.3.2.1 Addressing of I/O Modules

WAGO I/O System 750

750-890 Controller Modbus TCP; G4; 2ETH; SD

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.

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 35: 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

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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

Manual

Version 1.2.2