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A Comparison of IoT Gateway Protocols: MQTT and Modbus

The Internet of Things (IoT) isn’t just about new technologies: It’s also about integration with older technologies, a key attribute of which is communication. The available methods of communication are diverse, however, and numerous protocols play a role in bringing the plethora of “things” to the Internet. This article explores two complementary protocols for the IoT: Modbus, a local protocol for short-distance device attachment, and Message Queuing Telemetry Transport (MQTT), a scalable Internet protocol that enables global communication for the IoT.

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