Introduction
The Honeywell 2MLL‑C42A is a versatile communication module designed for the MasterLogic‑200 (ML200 / ML200R) PLC platform. It facilitates seamless data exchange between the PLC and external devices or networks, enabling robust integration in industrial automation systems. With support for multiple communication protocols and high-speed data transfer, this module ensures reliable connectivity for process control, machine automation, and real-time monitoring applications. Its durable, compact design makes it suitable for installation in demanding industrial environments where efficient, noise-resistant communication is essential.
Technical Specifications
| Parameter | Details |
|---|---|
| Module Type | Communication Module |
| Supported Protocols | Modbus RTU, Modbus ASCII, and other serial protocols (RS-232/RS-485) |
| Baud Rate | 300 bps – 115,200 bps |
| Data Bits | 7 or 8 bits |
| Stop Bits | 1 or 2 bits |
| Parity | None, Odd, Even |
| Transmission Distance | RS-485: up to 1200 m; RS-232: up to 15 m |
| Connector Type | 9-pin D-sub female |
| Isolation | Optical isolation for electrical noise protection |
| Form Factor / Mounting | Rack-mounted for MasterLogic backplane |
| Operating Temperature | 0 °C – 55 °C |
| Storage Temperature | –40 °C – 85 °C |
| Humidity | 5–95% RH, non-condensing |
| LED Indicators | Power, Transmit (Tx), Receive (Rx) |
| Module Weight | Approx. 0.12 kg |
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