![]() ![]() Modbus is a half-duplex, serial digital communication protocol. Almost every integrable industrial device supports Modbus. It enables industrial controllers or PLCs to communicate with sensors, actuators, HMIs, and other modules used in instrumentation and control. Modbus is what you’ll call a communication protocol built for industrial controllers. Let’s start with a simple Modbus definition. Modbus is, thankfully, relatively simple technology, and we've put together everything you should know about Modbus in this comprehensive guide. You could be overwhelmed by the various registers and struggle to communicate with a Modbus device. If you're not familiar with Modbus, choosing industrial modules and setting them up can be challenging. ![]() Various sensors use Modbus, VFD, actuator control, and PLC, particularly in the oil & gas and agricultural industry. You're likely to come across the term Modbus when you're searching for industrial control modules.
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