Just getting to grips with some Arduino Modbus master code,
I have been learning the HalfDuplex 485, and managed to get the communication up and running.
I would like to export the reading to excel for logging using the plx-daq version2 .
I would like to ask for some help with this if anyone out there has had the following problem.
I have a problem where the serial monitor does print the correct hex value I require to send to the plx-daq, however the serial print , prints some unknown symbols before it prints the actual value,
(please see the attachment)
what you see in the serial monitor should only be the hex value , the symbols need to be erased.
These symbols prevent the plx-daq from performing its task to log the actual value I need logging.
It seems as though its something to do with the Arduino master to Modbus slave communications ,
When i try usual analogue or digital signals the serial monitor it’s faultless .
I have included the code I’m using
Any reply would be greatly received .
MODBUS_2_REG_to_send.ino (1.43 KB)