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C250 and V250 Modbus RTU Communications User Guide

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This document provides installation, configuration, and protocol details for implementing Modbus RTU serial communications with C250 and V250 controllers. It covers electrical wiring, serial parameters, Modbus function codes, exception responses, and a full list of addressable coils and registers for analog inputs, control settings, set points, alarms, and ramp/soak functions.

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