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Modbus is a simple protocol for serial communication between electronic devices.
1
vote
1
answer
768
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Cannot read modbus data repetitively
I try to communicate with 2 RS485 sensors (pH and EC), but I have some troubles with my code. First, I tried to get data from just one:
The function in charge of request sending:
String GET_probe(St …
4
votes
1
answer
26k
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Modbus RTU controller monitoring with arduino and RS485 module
I baught a pHmeter controller with RS485 output (MODBUS RTU protocol).
I want to get pH value read by the controller over RS485 module and Arduino. …