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Modbus RTU
#5
(25.03.2025, 14:40)admin Wrote: LM has GND connection next to RS485 A/B. Some Modbus devices have 0V connection. If yours don't you can use DC power supply input negative pole / GND.
The Modbus slaves are energy meters powered by 230 volts, I have no GND reference, I only have the negative of the serial line.
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Messages In This Thread
Modbus RTU - by Omega Technology - 25.03.2025, 14:31
RE: Modbus RTU - by admin - 25.03.2025, 14:32
RE: Modbus RTU - by Omega Technology - 25.03.2025, 14:35
RE: Modbus RTU - by admin - 25.03.2025, 14:40
RE: Modbus RTU - by Omega Technology - 25.03.2025, 14:45
RE: Modbus RTU - by admin - 25.03.2025, 14:47
RE: Modbus RTU - by Omega Technology - 25.03.2025, 14:48
RE: Modbus RTU - by admin - 25.03.2025, 14:52
RE: Modbus RTU - by Omega Technology - 25.03.2025, 14:56
RE: Modbus RTU - by admin - 25.03.2025, 14:58
RE: Modbus RTU - by Omega Technology - 25.03.2025, 14:59
RE: Modbus RTU - by admin - 25.03.2025, 15:21
RE: Modbus RTU - by Omega Technology - 26.03.2025, 10:40
RE: Modbus RTU - by admin - 26.03.2025, 10:43
RE: Modbus RTU - by Omega Technology - 26.03.2025, 11:42
RE: Modbus RTU - by Omega Technology - 27.03.2025, 07:17
RE: Modbus RTU - by Daniel - 26.03.2025, 11:44
RE: Modbus RTU - by Omega Technology - 26.03.2025, 17:12
RE: Modbus RTU - by Daniel - 27.03.2025, 08:25

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