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ModbusMaster: Writing a single bit to a coil


Vitaly.Avilov Apr 21, 2019 12:23 AM

Hello.

I am trying to control fan and heater of SR30-D1 pyranometer through a ModbusMaster instruction. 

Since I able to communicate and read registers using Modbus function 3, I have problems with writing to a coils (Modbus function 5).  Please, could you suggest how should look ModbusVariable parameter in CR basic to write either 0xFF00 or 0x0000 to a coil?  

Thank you.

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