Hello all,
I am a student from Malta, currently, with my classmates we trying to communicate to the plc(micro820) via Modbus RTU RS485. We are attempting Modscan program and also C#(EasyModbus library) installed on our laptop to control and monitor the plc. We only accomplish writing the holding registers 4XXXX. We tried several times to write/read the coils/contacts with no success. Kindly could someone suggest any settings or modifications which we can do to the ladder diagram attached, please?
Thank you