Hi guys . Im trying to monitor gas detection controller Vortex model from Crowcon /UK on Citect SCADA by modbus RTU RS485 . Reading analog value are available and theres no problem . but for the registers which shall be write is not accessible . 03 holding register and 16 preset multi register. Registers are available in modbus map and can be downloaded here ( https://www.crowcon.com/product/download/601/Vortex+Modbus+Map.pdf ). Also i have tried on modscan but found no result . How should i use function code 16 in Citect SCADA or on modscan ?
Thanks a lot
Thanks a lot