Description
Ladder logic is required for managing communication between the MVI56-PDPMV1 module and the processor. The ladder logic handles tasks such as:
Module backplane data transfer
Special block handling
Status data receipt
MVI56-PDPMV1 Main technical parameters
Working voltage: AC230V (phase voltage), frequency 50Hz/60Hz
Product specifications: 25A, 32A, 40A, 50A, 63A
Overvoltage action cutoff value: AC275 ± 5VAC
Overvoltage recovery value: AC255 ± 5VAC
Undervoltage action cutoff value: AC160 ± 5VAC
Undervoltage recovery value: AC195 ± 5VAC
Power transmission delay after power outage: 30s ± 5s
Undervoltage action time: 1s
● Overvoltage action time:
● Self power consumption: ≤ 3W
Electrical and mechanical life: ≥ 10000 times
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.
Data related to the MVI56-MNETC is stored in the ladder logic in variables called controller tags. Individual controller tags can be grouped into collections of controller tags called controller tag structures.
A controller tag structure can contain any combination of:
Individual controller tags
Controller tag arrays
Lower-level controller tag structures
The MVI56-PDPMV1 controller tags for the module are pre-programmed into the Add-On Instruction Import Rung ladder logic. You can find them in the Controller Tags subfolder, located in the Controller folder in the Controller Organizer pane of the main RSLogix 5000 window. This controller tag structure is arranged as a tree structure. Individual controller tags are found at the lowest level of the tree structure. Each individual controller tag is defined to hold data of a specific type, such as integer or floating-point data. Controller tag structures are declared with user-defined data types, which are collections of data types.