Reliance Electric 57C404C Communication Network Module

Reliance Electric 57C404C Network Communications Module for AutoMax PLCs is a high-speed network interface card designed to connect multiple AutoMax controllers on a single distributed network. It transmits control and status data across the network at 845K baud, supports networks up to 3000 ft, and plugs into AutoMax backplanes via P1 and P2 slots in the rack. The module operates from 220V power and provides a 50 kHz output frequency. Built-in diagnostics are accessible through an RS-232C port, and a 7-segment LED labeled “Fault Code” indicates fault conditions. The unit measures 240 mm x 200 mm x 60 mm and weighs about 2.5 kg, making it a compact yet robust addition to industrial control enclosures. It features NETWORK and MONITOR ports for flexible wiring, enabling straightforward integration with existing AutoMax racks; it is intended for use with AutoMax rack systems and is manufactured in the USA. Its dual-port NETWORK and MONITOR interfaces support flexible topology and provide easy monitoring of network health.