MDA Scientific CM4 Master Module

MVI56-MDA4

The MVI56 MDA Scientific CM4 Gas Analyzer Master Module allows Rockwell Automation ControlLogix processors to interface easily as a host with MDA Scientific CM4 gas monitoring hardware (See MVI56-MDA16 for a System 16 solution).

Features and Benefits

The MVI56-MDA4 module acts as an input/output module between the CM4 network and the Rockwell Automation backplane. The data transfer from the ControlLogix processor is asynchronous from the actions on the CM4 network. A 5000-word register space in the module is used to exchange data between the processor and the CM4 network.

General Specifications

• Single Slot - 1756 backplane compatible
• 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. Sample ladder file included.
• Configuration data obtained from configuration text file downloaded to module. Sample configuration file included
• Local or remote rack

Applications

This application is useful for any industry producing, using, or exposed to toxic or corrosive gases, where interfacing the MDA4 Gas Analyzer with a ControlLogix processor is required.

Functional Specifications

• Support for the storage and transfer of up to 5000 registers to/from the ControlLogix processor's data files
• Two CM4 master ports.
• Configurable parameters include:
  • Baud Rate 110 to 115,200
  • Parity None, Odd and Even
  • Data Bits 5 to 8
  • Stop Bits 1 or 2
  • RTS On and Off Timing 0 to 65535 milliseconds
  • Use of CTS Modem Line Yes or No
  • Response Timeout 0 to 65535 milliseconds
  • Number of Slaves 1 to 10
  • Reduced Data Structure Y/N
  • Protocol Version 1 or 2
  • Polling Delay 0 to 65535 milliseconds.

A port configured as a virtual CM4 master device on the MVI56-MDA4 module will actively issue CM4 commands to other nodes on the CM4 network. Four read and five write commands are supported.

The MDA-4 product includes the following standard features:

• Two fully configurable serial ports, each capable of supporting the CM4 Master functionality
• Supports up to 10 CM4 units per serial port, 10 total per module
• Support movement of binary, integer, ASCII, and floating point data types
• Memory mapping will be pre-defined in the module to ease implementation in the ladder program
• RS-485 connection from each port directly to the CM4 units
• Software configuration (From processor ladder logic)
  • Slave Addr: 0 to 31
  • Command: Select command to be executed
• Supported CM4 command codes:
  • Read Commands
  • 0x30 Get System Information
  • 0x31 Get Unit Status
  • 0x36 Get Alarm History
  • 0x37 Get Current Point Status
  • Write Commands
  • 0x51 Reset Fault or Alarm
  • 0x52 Set Key-Code
  • 0x53 Lock Keyboard
  • 0x60 End Point Lock-On
  • 0x61 Start Point Lock-On
• Operating Mode returned to ladder processor
• Error Codes returned to the ladder processor

Hardware Specifications

Ordering Information

Distributors:
Place your order by email to orders@prosoft-technology.com:, fax to +1 661-716-5101.

Sales and Support: