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Using controller tags – ProSoft Technology MVI56E-MNET/MNETXT User Manual

Page 79

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MVI56E-MNET / MNETXT ♦ ControlLogix Platform

Ladder Logic

Modbus TCP/IP Interface Module

User Manual

ProSoft Technology, Inc.

Page 79 of 181

April 23, 2014

For example, if you expand MNETDATA, you will see that it contains two UDTs,
ReadData and WriteData. Both of these are 600-element integer arrays by
default.

Notice that these UDTs are the data types used to declare the
MNET.DATA.ReadData and MNET.DATA.WriteData controller tag arrays.

Each UDT is commented in the Description column.

3.3

Using Controller Tags

You can use controller tags to:
 View read and write data that is being transferred between the module and

the processor.

 View status data for the module.
 Set up and trigger special functions.
 Initiate module restarts (Warm Boot or Cold Boot).