{"product_id":"prosoft-mvi56-mcm-modbus-communication-module","title":"ProSoft MVI56-MCM Modbus Communication Module","description":"\u003ch2\u003eProSoft MVI56-MCM Modbus Communication Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eProSoft MVI56-MCM\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eMVI56-MCM\u003c\/strong\u003e Modbus Communication Module, provides serial Modbus RTU or ASCII communication for Allen-Bradley ControlLogix platforms. The module transfers data between ControlLogix tags and serial field devices through configurable Modbus Master or Slave ports.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eMVI56-MCM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eProSoft Technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eModbus Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley ControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Compatibility\u003c\/td\u003e\n\u003ctd\u003eSingle-slot 1756 ControlLogix chassis; local or remote rack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.90 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 deg C to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95%, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e800 mA at 5 VDC; 3 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration Port\u003c\/td\u003e\n\u003ctd\u003e1 x RS-232 DB-9M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Ports\u003c\/td\u003e\n\u003ctd\u003e2 x independently configurable serial ports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Connectors\u003c\/td\u003e\n\u003ctd\u003eRJ45; RJ45-to-DB9 adapters included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Interfaces\u003c\/td\u003e\n\u003ctd\u003eRS-232, RS-422, RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Selection\u003c\/td\u003e\n\u003ctd\u003eJumper-selectable per application port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaud Rate\u003c\/td\u003e\n\u003ctd\u003e110 bps to 115.2 kbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSerial Port Isolation\u003c\/td\u003e\n\u003ctd\u003e500 V or 1000 V optical isolation from backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModbus Modes\u003c\/td\u003e\n\u003ctd\u003eMaster or Slave per application port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModbus Protocols\u003c\/td\u003e\n\u003ctd\u003eModbus RTU and Modbus ASCII\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModbus Commands\u003c\/td\u003e\n\u003ctd\u003eUp to 100 configurable commands per Master port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Function Codes\u003c\/td\u003e\n\u003ctd\u003e1, 2, 3, 4, 5, 6, 15, 16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFloating-Point Support\u003c\/td\u003e\n\u003ctd\u003eEnron Modbus floating-point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indication\u003c\/td\u003e\n\u003ctd\u003eModule Status, Backplane Transfer Status, Application Status, Serial Activity\/Error\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProtocol Conversion and Serial Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe MVI56-MCM operates as an I\/O module on the ControlLogix backplane while exchanging serial data with Modbus devices. Each application port can operate independently as a Modbus Master or Modbus Slave, allowing separate serial networks within one module.\u003c\/p\u003e\n\u003cp\u003eThe two application ports support RS-232, RS-422, or RS-485 through jumper-selectable electrical interfaces. Baud rates range from 110 bps to 115.2 kbps, while optical isolation separates the application serial interfaces from the ControlLogix backplane.\u003c\/p\u003e\n\u003cp\u003eEach Master port supports up to 100 configurable commands, with additional command control available through ladder logic blocks. Supported transactions include coil, discrete input, holding register, input register, and single or multiple write operations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the two application ports use different Modbus operating modes?\u003c\/p\u003e\n\u003cp\u003eA: Yes. Each application port can be configured independently as either a Modbus Master or Modbus Slave.\u003c\/p\u003e\n\u003cp\u003eQ: Which electrical serial interfaces are available on the application ports?\u003c\/p\u003e\n\u003cp\u003eA: Each application port supports RS-232, RS-422, or RS-485 with jumper-selectable interface configuration.\u003c\/p\u003e\n\u003cp\u003eQ: What backplane power load does the module require?\u003c\/p\u003e\n\u003cp\u003eA: The supplied specifications identify a backplane load of 800 mA at 5 VDC and 3 mA at 24 VDC.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the MVI56-MCM in an appropriate single-slot 1756 ControlLogix chassis position and verify chassis power capacity before energization.\u003c\/p\u003e\n\u003cp\u003eSet each application port's RS-232, RS-422, or RS-485 interface configuration according to the connected field device.\u003c\/p\u003e\n\u003cp\u003eUse the supplied RJ45-to-DB9 adapters where required and verify connector pin assignments before applying communication signals.\u003c\/p\u003e\n\u003cp\u003eFor RS-485 networks, maintain correct differential polarity and apply termination according to the connected network topology and device requirements.\u003c\/p\u003e\n\u003cp\u003eRoute serial communication cables separately from high-voltage power conductors, contactor wiring, and high-current switching circuits to reduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eConnect cable shields according to the plant grounding standard and avoid creating unintended shield-current paths between isolated equipment.\u003c\/p\u003e\n\u003cp\u003eUse the CFG RS-232 port for configuration, debugging, and diagnostics rather than treating it as an application Modbus port.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, verify baud rate, serial mode, Modbus address, function-code configuration, and ControlLogix tag mapping against the connected device documentation.\u003c\/p\u003e\n\u003cp\u003eConfirm module status, backplane transfer status, application status, and serial activity\/error indicators during startup and communication testing.\u003c\/p\u003e","brand":"AMPHENOL","offers":[{"title":"Default Title","offer_id":43931794997338,"sku":"MVI56-MCM","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/MVI56-MCM2.jpg?v=1787908509","url":"https:\/\/www.plcmasters.com\/products\/prosoft-mvi56-mcm-modbus-communication-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}