{"product_id":"honeywell-2mll-c42a-serial-communication-module","title":"Honeywell 2MLL-C42A Serial Communication Module","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 2MLL-C42A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e2MLL-C42A\u003c\/strong\u003e Snet Communication Module, operates as a dedicated hardware component for serial data transmission within Honeywell MasterLogic PLC architectures. Configured for high-speed connectivity, the \u003cstrong\u003eHoneywell 2MLL-C42A\u003c\/strong\u003e (\u003cstrong\u003e2MLL-C42A\u003c\/strong\u003e Serial Communication Module) provides direct physical execution of RS-422 signal bridging across industrial control platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware 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-C42A\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSouth Korea\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.45 kg (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard modular form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eStandard industrial ambient range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard internal module supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCommunication Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Type\u003c\/td\u003e\n\u003ctd\u003eRS-422\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Count\u003c\/td\u003e\n\u003ctd\u003e2 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control and Processing Metrics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity:\u003c\/strong\u003e The 2MLL-C42A interfaces directly with the system backplane to provide deterministic serial data exchange. It facilitates the conversion of PLC memory registers into high-speed RS-422 data streams, ensuring synchronization for distributed motion control or remote telemetry applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling:\u003c\/strong\u003e The module is designed to manage two independent RS-422 channels, providing scalable integration for complex networking requirements. This dual-channel capability allows for cost-effective implementation of multi-node communication links where feedback from diverse industrial devices must be aggregated within a single control node.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 2MLL-C42A support full-duplex communication on its RS-422 channels?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The RS-422 interface on this module supports full-duplex data transmission. Ensure that the cabling infrastructure is correctly wired for four-wire communication (TX+, TX-, RX+, RX-) to leverage the full throughput capabilities of the module.\u003c\/p\u003e\n\u003cp\u003eQ: Are the serial channels galvanically isolated?\u003c\/p\u003e\n\u003cp\u003eA: The module is designed for standard industrial RS-422 signaling. For installations in environments with high electrical noise, utilize external isolation barriers to prevent ground potential differences from affecting the differential signal lines.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Wiring:\u003c\/strong\u003e Use shielded twisted-pair cabling for all serial connections to mitigate electromagnetic interference (EMI). Ensure the shield is terminated at the cabinet's instrumentation earth bus to reject noise that could cause bit-level corruption or cyclic redundancy check (CRC) errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTermination:\u003c\/strong\u003e RS-422 networks require proper termination at the physical ends of the communication bus. Install 120-ohm resistors across the receive lines at the terminal devices to prevent signal reflections that occur at higher baud rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Integrity:\u003c\/strong\u003e Verify that the DB-9 or terminal block connectors are securely fastened to the module. In dynamic motion environments, vibration can cause intermittent contact, leading to erratic communication drops or loss of valid data packets.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":47908206706878,"sku":"2MLL-C42A","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-02_09-52-13.png?v=1783065812","url":"https:\/\/www.autooiltech.com\/ar\/products\/honeywell-2mll-c42a-serial-communication-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}