Prosoft-technology MVI56E-SIE Manual do Utilizador descarregar pdf (Página 103)

MVI56E-SIE ♦ ControlLogix Platform Ladder Logic

Client Communication Module User Manual

ProSoft Technology, Inc. Page 103 of 168

September 6, 2012

3 Ladder Logic

In This Chapter

 Controller Tags .................................................................................... 104

 User-Defined Data Types (UDTs) ....................................................... 106

 Using Controller Tags .......................................................................... 107

 Controller Tag Overview ...................................................................... 108

Ladder logic is required for managing communication between the MVI56E-SIE

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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Prosoft-technology MVI56E-SIE Manual do Utilizador Página 103