ProSoft Technology MVI56E-MNET/MNETXT - Manual (Page 75)

MVI56E-MNET / MNETXT ♦ ControlLogix Platform Ladder Logic
Modbus TCP/IP Interface Module User Manual
ProSoft Technology, Inc. Page 75 of 181
April 23, 2014
3 Ladder Logic
In This Chapter
 Controller Tags ...................................................................................... 76
 User-Defined Data Types (UDTs) ......................................................... 78
 Using Controller Tags ............................................................................ 79
 Controller Tag Overview ........................................................................ 80
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Ladder logic is required for managing communication between the MVI56E-
MNET 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.