MDA Scientific CM4 Gas

Analyzer Main Module

MVI56-MDA4

The MVI56 MDA Scientific CM4 Gas Analyzer Master Module allows Rockwell Automation ControlLogix processors to easily interface with MDA Scientific CM4 gas monitoring hardware as a host.

Features and Benefits

The MVI56-MDA4 module is an input/output module between the CM4 network and the Rockwell Automation backplane.Data transfer from the ControlLogix processor is asynchronous with operation on the CM4 network.

The 5000 words of register space in the module are used to exchange data between the processor and the CM4 network.

General Specifications

– Single slot – 1756 backplane compatible

– Module is considered an input/output module with access to processor memory for data transfer between processor and module

– Ladder logic is used to transfer data between the module and the processor. Example ladder diagram files are included.

– Configuration data from a configuration text file www.cniacs.com downloaded to the module.

– Local or remote rack

Functional Specifications

Some general specifications include

– Supports storage and transfer of up to 5000 registers. File

– Two CM4 master ports.

– Configurable parameters include

o Baud rate 110 to 115.200

o Parity None, Odd, Even

o Data bits 5 to 8

o Stop bits 1 or 2

o RTS on and off timing 0 to 65535 milliseconds

o Use CTS modem line Yes or No

o Response timeout 0 to 65535 milliseconds

o Number of slaves 1 to 10

o Simplified data structure yes/no

o Protocol version 1 or 2

o Polling delay 0 to 65535 milliseconds.

Ports configured as virtual CM4 masters on the MVI56-MDA4 module will actively issue CM4 commands to other nodes on the CM4 network. Issues CM4 commands to other nodes on the CM4 network.