Ladder Logic - ProSoft MVI56E-MNETCR User Manual

MVI56E-MNETCR ♦ ControlLogix Platform
Modbus TCP/IP Multi-Client Enhanced Communications Module for Remote Chassis
3

Ladder Logic

In This Chapter

Controller Tags ...................................................................................... 76

User-Defined Data Types (UDTs) ......................................................... 77

Using Controller Tags ............................................................................ 78

Controller Tag Overview ........................................................................ 79
Ladder logic is required for managing communication between the MVI56E-
MNETCR module and the processor. The ladder logic handles tasks such as:

Module backplane data transfer

Special block handling

Status data receipt
Additionally, a power-up handler may be needed to initialize the module's
database and may clear some processor fault conditions.
The sample Import Rung with Add-On Instruction is extensively commented to
provide information on the purpose and function of each user-defined data type
and controller tag. For most applications, the Import Rung with Add-On
Instruction will work without modification.
ProSoft Technology, Inc.
Ladder Logic
User Manual
Page 75 of 161