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The Allen-Bradley 1771-DMC is a sophisticated control coprocessor module designed to enhance traditional programmable controllers capabilities. It supports C, BASIC, and assembler programs, enabling efficient execution of complex tasks and mathematical computations. Notably, it facilitates communication via Ethernet or asynchronous serial ports, connecting seamlessly with external devices. Operating at a backplane current of 2.5 A at +5V DC, the module also features a 450 mA AUI port at 15V DC. It is compatible with a broad range of communication protocols, offering Ethernet speeds of 10 Mbps and serial communication rates from 110 bps to 38.4 Kbps. With reliable environmental performance between 0-60°C, it integrates effortlessly into PLC-5 systems, whether directly or remotely, adapting to various operational configurations.