Author Topic: arduino uno modbus rtu master to HMI  (Read 658 times)

andresgolds@hotmail.com

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arduino uno modbus rtu master to HMI
« on: April 29, 2021, 09:25:49 AM »
HELLO, I programmed my Arduino Uno as Modbus RTU Master, id 1, it has one analog signal and two digital ones, the directions in the Arduino programming are:
(30001, value); // Writes value to 0x40000 holding register the analog signal, and
(0x40001.1); // Writes 1 to 0x40001 holding register and
(0x40001.0); // Writes 0 to 0x40001 holding register. When I use a modbus slave trial program I see the signals fine, but when I put those register values ​​in the Advance HMI digital panel, I don't get anything, what are the correct addresses in the HMI? Thanks greetings

Godra

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Re: arduino uno modbus rtu master to HMI
« Reply #1 on: April 29, 2021, 05:27:01 PM »
AdvancedHMI is designed to be used as a master not as a slave.