{"product_id":"prosoft-mvi94-mcm-modbus-master-slave-communication-module","title":"ProSoft MVI94-MCM Modbus Master\/Slave Communication Module","description":"\u003ch2\u003eProSoft MVI94-MCM Modbus Master\/Slave Communication Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for Modbus master\/slave communication within the 1794 Flex I\/O system, the \u003cstrong\u003eProSoft MVI94-MCM\u003c\/strong\u003e (\u003cstrong\u003eMVI94-MCM\u003c\/strong\u003e Modbus Communication Module) provides serial protocol interfacing through dedicated configuration and application 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\u003eMVI94-MCM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eProSoft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eModbus Master\/Slave Communication Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003e1794 Flex I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Series\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley 1794 Flex I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eModbus communication module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eSingle-slot module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Position\u003c\/td\u003e\n\u003ctd\u003eAny slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e20 mA @ 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Supply\u003c\/td\u003e\n\u003ctd\u003e12 to 24 VDC, 340 to 170 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration Port\u003c\/td\u003e\n\u003ctd\u003ePRT1, Mini-DIN, RS-232, hardware handshaking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Port\u003c\/td\u003e\n\u003ctd\u003ePRT2, Mini-DIN, RS-232\/422\/485, jumper selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication Port Isolation\u003c\/td\u003e\n\u003ctd\u003e500 V optical isolation from backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Modbus 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\u003eCommand Capacity\u003c\/td\u003e\n\u003ctd\u003e100 commands per port maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRegister Capacity\u003c\/td\u003e\n\u003ctd\u003e5000 maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnron Modbus Version\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Usage\u003c\/td\u003e\n\u003ctd\u003eUser definable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\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\u003eShock\u003c\/td\u003e\n\u003ctd\u003e30 g operational\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e9.4 cm x 9.4 cm x 6.9 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.44 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLED Indicators\u003c\/td\u003e\n\u003ctd\u003eModule status, backplane transfer, application status, serial activity, error\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation\u003c\/td\u003e\n\u003ctd\u003eDictated by user program\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSerial Protocol Conversion and Port Isolation\u003c\/h3\u003e\n\u003cp\u003eThe MVI94-MCM provides separate configuration and application serial interfaces for Modbus communication management. PRT1 uses RS-232 with hardware handshaking for configuration functions.\u003c\/p\u003e\n\u003cp\u003ePRT2 supports RS-232, RS-422, and RS-485 through jumper selection for application-side serial communication. The application interface provides 500 V optical isolation from the Flex I\/O backplane.\u003c\/p\u003e\n\u003cp\u003eThe module supports Modbus function codes 1, 2, 3, 4, 5, 6, 15, and 16. Command processing supports up to 100 commands per port, while the register capacity is specified at 5000 maximum.\u003c\/p\u003e\n\u003cp\u003eThe module transfers data through the 1794 Flex I\/O backplane with a specified current load of 20 mA at 5 VDC. Therefore, backplane loading should be included when calculating the available FlexBus current budget.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the MVI94-MCM communicate using RS-485?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The PRT2 application port supports RS-232, RS-422, and RS-485 through jumper selection.\u003c\/p\u003e\n\u003cp\u003eQ: Is the application serial port isolated from the Flex I\/O backplane?\u003c\/p\u003e\n\u003cp\u003eA: Yes. PRT2 provides 500 V optical isolation between the application serial interface and the backplane.\u003c\/p\u003e\n\u003cp\u003eQ: What Modbus function codes are supported?\u003c\/p\u003e\n\u003cp\u003eA: The module supports function codes 1, 2, 3, 4, 5, 6, 15, and 16.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the MVI94-MCM in an available single-slot position within the compatible 1794 Flex I\/O assembly.\u003c\/p\u003e\n\u003cp\u003eVerify the selected PRT2 jumper configuration before connecting RS-232, RS-422, or RS-485 field wiring. Do not change interface selection while energized.\u003c\/p\u003e\n\u003cp\u003eRoute serial communication wiring separately from high-voltage power conductors and high-current switching circuits. Maintain appropriate physical separation where parallel routing could introduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eFor shielded serial cables, terminate shielding according to the plant grounding standard and avoid creating unintended ground loops. RS-485 installations should maintain correct polarity and termination practices for the connected network topology.\u003c\/p\u003e\n\u003cp\u003eVerify the external 12 to 24 VDC supply and calculated current requirement before energizing the module. Include the 20 mA at 5 VDC backplane load in the Flex I\/O power budget.\u003c\/p\u003e\n\u003cp\u003eConfirm module status, backplane transfer, application, serial activity, and error indicators during commissioning. Configuration parameters should correspond to the connected Modbus device addressing and serial interface settings.\u003c\/p\u003e","brand":"AMPHENOL","offers":[{"title":"Default Title","offer_id":43968898072666,"sku":"MVI94-MCM","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/MVI94-MCM2.jpg?v=1788155207","url":"https:\/\/www.plcmasters.com\/products\/prosoft-mvi94-mcm-modbus-master-slave-communication-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}