Prosoft MVI56-LTQ Limitorque Valve Actuator Master Communication Module

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.

Functional Specifications

 Support for the storage and transfer of up to 150 valves to the ControlLogix

processor’s controller tags

 Emulates Limitorque’s Port A/B polling scheme using both ports on the module

 Supports the following valves

o MX/DDC Modbus

o UEC-3-DDC Modbus

o DDC-100M I/O module

o DDC-100M field unit

o Valvcon IVO (unit in multi-drop mode only)

 Software configuration

o Baud rate: 1200 to 115200

o Message response timeout

o Number of active slaves

o Last state on communication failure for valve data

o Network polling scheme

o Active slave table (bit mapped)

o Use of CTS module line option

 Support command

o Continuously polled

o Read registers 40008 to 40013. optional 40055 or 40006/40007

o Commands: open, stop, close, initiate network ESD, terminate network ESD,

engage contactors 1 to 6. disengage contactors 1 to 6. position valve (0 to 100%)

 Data returned to the processor for each valve

o Valve position

o Status register

o Fault register

o Digital outputs

o Digital inputs registers 1 and 2

o Communication error code

o Communication poll counter

o Special polled registers