{"product_id":"mvi69-gsc-prosoft-generic-ascii-serial-communication-module","title":"MVI69-GSC | Prosoft Generic ASCII Serial Communication Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eProSoft MVI56-MCMR\u003c\/strong\u003e is a \u003cstrong\u003edual-port Modbus RTU\/ASCII Communication Module\u003c\/strong\u003e specifically optimized for \u003cstrong\u003eremote rack installations\u003c\/strong\u003e in Rockwell Automation ControlLogix systems. It features \u003cstrong\u003etwo fully independent serial channels\u003c\/strong\u003e with DB9 connectors, supporting RS-232\/RS-422\/RS-485 software-selectable interfaces. Unlike the standard MVI56-MCM, the MCMR uses a \u003cstrong\u003ecompact data block approach\u003c\/strong\u003e that minimizes backplane bandwidth usage, making it ideal for installations across ControlNet or EtherNet\/IP remote I\/O networks.\u003c\/p\u003e\n\n\u003ch3\u003eKey Technical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Dual-Port Modbus RTU\/ASCII Communication Module (Remote Optimized)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e ProSoft MVI56\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlatform:\u003c\/strong\u003e Allen-Bradley ControlLogix\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Ports:\u003c\/strong\u003e 2 × DB9 female connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterface Types:\u003c\/strong\u003e RS-232 \/ RS-422 \/ RS-485 (software configurable)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtocol Support:\u003c\/strong\u003e Modbus RTU, Modbus ASCII\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Independence:\u003c\/strong\u003e 2 fully independent channels with different baud rates and protocols\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBaud Rate Range:\u003c\/strong\u003e 300 bps to 115.2 kbps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData Capacity:\u003c\/strong\u003e Up to 10,000 16-bit registers (internal storage)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane:\u003c\/strong\u003e 1756 ControlLogix (optimized for remote racks)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e ~500 mA @ 5V DC (typical, dual channel full load)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration Port:\u003c\/strong\u003e 1 × RJ45 (10\/100 Mbps) for Web server and diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Settings:\u003c\/strong\u003e None\/Odd\/Even parity, 5-8 data bits, 1-2 stop bits, RTS delay adjustable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration Tool:\u003c\/strong\u003e ProSoft Configuration Builder (PCB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to +60°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Rack Optimized:\u003c\/strong\u003e Compact data block minimizes bandwidth over ControlNet\/EtherNet\/IP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Independent Channels:\u003c\/strong\u003e Each port runs different baud rates and protocols simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Communication:\u003c\/strong\u003e Up to 115.2 kbps for demanding applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge Internal Database:\u003c\/strong\u003e 10,000-word storage for extensive device data\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb-Based Diagnostics:\u003c\/strong\u003e RJ45 configuration port with built-in web server\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Configuration:\u003c\/strong\u003e PCB software with import\/export capability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster\/Slave Flexibility:\u003c\/strong\u003e Each port independently configurable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCritical Installation Note — Data Block Approach\u003c\/h3\u003e\n\u003cp\u003eUnlike standard MVI56-MCM, the MCMR uses a \u003cstrong\u003ecompact data block\u003c\/strong\u003e that does NOT automatically map to PLC I\/O tags. You \u003cstrong\u003eMUST\u003c\/strong\u003e use ProSoft's Add-On Instruction (AOI) or custom function blocks to read data from the module. Without periodic \u003ccode\u003eMCM_READ\u003c\/code\u003e calls in ladder logic, the module LEDs will show green but data will remain at initial values.\u003c\/p\u003e\n\n\u003ch3\u003eRS-485 Wiring Best Practices\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor runs \u0026gt;100m or \u0026gt;10 nodes, install \u003cstrong\u003e120Ω termination resistors\u003c\/strong\u003e at both ends of the bus\u003c\/li\u003e\n\u003cli\u003eMVI56-MCMR does NOT have built-in termination jumpers — external resistors required\u003c\/li\u003e\n\u003cli\u003eVerify A\/B polarity with multimeter (A should be ~2-6V higher than B when idle)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCross-facility energy data acquisition (multi-kilometer installations)\u003c\/li\u003e\n\u003cli\u003eMixed-protocol packaging lines (Modbus RTU + ASCII simultaneously)\u003c\/li\u003e\n\u003cli\u003eRemote SCADA concentrator applications\u003c\/li\u003e\n\u003cli\u003eBandwidth-constrained ControlNet\/EtherNet\/IP remote I\/O\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eInstall in 1756 ControlLogix slot (local or remote rack)\u003c\/li\u003e\n\u003cli\u003eConnect DB9 serial cables to Port 1 and Port 2\u003c\/li\u003e\n\u003cli\u003eSet jumpers for RS-232\/422\/485 as required\u003c\/li\u003e\n\u003cli\u003eConfigure baud rate, parity, and protocol per port via PCB\u003c\/li\u003e\n\u003cli\u003eImport AOI into Studio 5000 and add periodic \u003ccode\u003eMCM_READ\u003c\/code\u003e calls\u003c\/li\u003e\n\u003cli\u003eMap internal database to controller tags\u003c\/li\u003e\n\u003cli\u003eVerify data flow via web diagnostics\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between MVI56-MCM and MVI56-MCMR?\u003c\/strong\u003e\u003cbr\u003eA: MCMR is optimized for remote racks with compact data blocks; MCM is for local racks with automatic I\/O mapping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is my MCMR showing green LEDs but no data?\u003c\/strong\u003e\u003cbr\u003eA: You must use AOI or custom function blocks to read data. The module does not auto-map to I\/O tags.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it support floating-point data?\u003c\/strong\u003e\u003cbr\u003eA: Yes, supports Enron and Daniel floating-point formats.\u003c\/p\u003e\n\n\u003ch3\u003eModel Selection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMVI56-MCMR = \u003cstrong\u003eRemote-optimized Modbus module\u003c\/strong\u003e for ControlNet\/EtherNet\/IP remote I\/O\u003c\/li\u003e\n\u003cli\u003eFor local rack with auto I\/O mapping, use MVI56-MCM\u003c\/li\u003e\n\u003cli\u003eFor extended temperature, use MVI56E-MCMXT\u003c\/li\u003e\n\u003cli\u003eFor Modbus TCP\/IP, use MVI56E-MNETC\u003c\/li\u003e\n\u003cli\u003eAlways verify AOI implementation in ladder logic for MCMR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PROSOFT","offers":[{"title":"Default Title","offer_id":53800521334968,"sku":"MVI69-GSC","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/MVI69-GSCr180.png?v=1784796182","url":"https:\/\/www.globalpetroparts.com\/products\/mvi69-gsc-prosoft-generic-ascii-serial-communication-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}