Using MODBUS for Process Control and Automation

MODBUS is the most popular industrial protocol being used today, for good reasons. It is simple, inexpensive, universal and easy to use. Even though MODBUS has been around since the past century—nearly 30 years— almost all major industrial instrumentation and automation equipment vendors continue to support it in new products. Although new analyzers, flowmeters and PLCs may have a wireless, Ethernet or fieldbus interface, MODBUS is still the protocol that most vendors choose to implement in new and old devices.

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