Prosoft-technology MVI56E-MNETCR Uživatelský manuál stáhnout pdf (Strana 71)

MVI56E-MNETCR ♦ ControlLogix Platform Ladder Logic

Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis User Manual

ProSoft Technology, Inc. Page 71 of 159

June 14, 2011

3 Ladder Logic

In This Chapter

 Module Data Object (MNETCRMODULEDEF) ...................................... 72

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.

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