Hi Friends, I want to communicate with arduino slave from beijer exter t60m HMI using modbus rtu protocol over rs232, I am Using Modbus_Master_Slave Libraries basic example.
RS232 To TTL Converter Module MAX3232 is used for interfaceing arduino slave to hmi.
but i am unable to communicate with Hmi.
Really not know where the problem is.
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.