{"product_id":"honeywell-2mll-ch2a-serial-communication-interface-module","title":"Honeywell 2MLL-CH2A Serial Communication Interface Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 2MLL-CH2A\u003c\/strong\u003e is a dual-channel serial communication interface module designed for MasterLogic-200 PLC systems. It incorporates one RS-232C port and one RS-422\/485 port, enabling versatile data exchange between the controller and external hardware such as HMIs, programming PCs, modems, and field instruments.\u003c\/p\u003e\n\u003ch3\u003eInterface Performance and Network Topology\u003c\/h3\u003e\n\u003cp\u003eThe module features two independent communication interfaces: an RS-232C channel supporting point-to-point connections up to 15 m, and an RS-422\/485 channel supporting multi-drop networks up to 500 m. Configurable baud rates span from 300 bps up to 115,200 bps.\u003c\/p\u003e\n\u003cp\u003eOperation supports both Server mode and P2P (Client) mode across Modbus RTU\/ASCII (Master\/Slave) protocols, as well as user-defined proprietary protocols. Network station numbering ranges from 0 to 31, accommodating up to 32 addressable stations on a serial bus.\u003c\/p\u003e\n\u003ch3\u003eSetup and Module Diagnostics\u003c\/h3\u003e\n\u003cp\u003eModule configuration and link definitions are managed using SoftMaster-NM software. Diagnostics include auto-scan, frame monitoring, link status tracking, and internal loop-back testing to verify hardware signal paths.\u003c\/p\u003e\n\u003cp\u003eFront-panel LED indicators display operational status for RUN, I\/F, TX, RX, and ERR. The unit consumes approximately 310 mA at 5 VDC from the backplane supply.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\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\u003e2MLL-CH2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eMasterLogic-200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSerial Communication Interface Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Interfaces\u003c\/td\u003e\n\u003ctd\u003e1 x RS-232C (max 15 m), 1 x RS-422\/485 (max 500 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaud Rate Range\u003c\/td\u003e\n\u003ctd\u003e300 bps to 115,200 bps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Modes\u003c\/td\u003e\n\u003ctd\u003eServer mode, P2P (Client) mode\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols Supported\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\/ASCII (Master\/Slave), proprietary protocols\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStation Number Range\u003c\/td\u003e\n\u003ctd\u003e0 to 31 (up to 32 stations)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eAuto-scan, frame monitor, link monitor, loop-back test\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003eRUN, I\/F, TX, RX, ERR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration Software\u003c\/td\u003e\n\u003ctd\u003eSoftMaster-NM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Consumption\u003c\/td\u003e\n\u003ctd\u003eApprox. 310 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e51 x 178 x 356 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.30 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003cp\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp\u003eQ: What maximum transmission distance is supported on each serial channel?\u003c\/p\u003e\n\u003cp\u003eA: The RS-232C channel supports distances up to 15 m, while the RS-422\/485 channel supports cable runs up to 500 m.\u003c\/p\u003e\n\u003cp\u003eQ: Which communication protocols can be configured on the 2MLL-CH2A module?\u003c\/p\u003e\n\u003cp\u003eA: It supports Modbus RTU and ASCII in both Master and Slave roles, as well as custom user-defined proprietary protocols.\u003c\/p\u003e\n\u003cp\u003eQ: How many station addresses can be configured on the RS-422\/485 multi-drop network?\u003c\/p\u003e\n\u003cp\u003eA: Station numbers can be set from 0 to 31, supporting up to 32 active stations on the bus.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":67956792262952,"sku":"2MLL-CH2A","price":315.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/6266\/2184\/files\/2MLL-CH2A.png?v=1792662457","url":"https:\/\/www.powerdcs.com\/products\/honeywell-2mll-ch2a-serial-communication-interface-module","provider":"Power DCS Parts Limited","version":"1.0","type":"link"}