ProSoft Technology MVI56-LTQ - Manual (Page 55)

MVI56-LTQ ♦ ControlLogix Platform Reference
Limitorque Valve Actuator Master Communication Module User Manual
ProSoft Technology, Inc. Page 55 of 98
August 30, 2010
5 Reference
 Product Specifications
In This Chapter
........................................................................... 55
 Functional Overview .............................................................................. 58
 Cable Connections ................................................................................ 68
 MVI56-LTQ Database Definition ............................................................ 74
 MVI56-LTQ Status Data Definition ........................................................ 76
 LTQValve Object Definition ................................................................... 77
 Command Usage for Limitorque Products............................................. 80
 Polling Schemes .................................................................................... 82
 Typical Network Loop ............................................................................ 85
5.1 Product Specifications
The MVI56 Limitorque Valve Actuator Master Communication Module allows
ControlLogix compatible processors to interface easily with Limitorque Valve
Actuators and other Limitorque protocol compatible devices.
The MVI56-LTQ module acts as an input/output module between the Limitorque
valve network and the ControlLogix processor. The data transfer from the
ControlLogix processor is asynchronous from the actions on the network. The
1500-word register space in the module transfers the valve information from the
module to the processor. Ladder logic is responsible for control of the valves.
Data transferred from the processor to the module instructs the module to
execute commands to valves on the Limitorque network.
5.1.1 General Specifications
 Single Slot - 1756 backplane compatible
 Local or remote rack
 The module is recognized as an Input/Output module and has access to
processor memory for data transfer between processor and module
 Ladder Logic is used for data transfer between module and processor.
 Configuration data obtained through user-defined ladder. Sample ladder file
included