Regarding MODBUS RTU485 half-duplex

2012-07-05View Original

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What does half-duplex in MODBUS RTU485 mean? Are there any other protocols as well?

Reply #22012-07-05

All I know is that for RS485 (MODBUS protocol) instruments, a program is required to connect them to an RTU. As for half-duplex, I’m not quite sure; please wait for those more knowledgeable to reply.

Reply #32012-07-05

Modbus is a communication protocol; RTU is a transmission method (or data format) within Modbus. 485 refers to the physical interface, while half-duplex means that data can be transmitted in both directions, but not simultaneously.

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Regarding MODBUS RTU485 half-duplex

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