AC500 and Aqua Master Flow Meter Modbus RTU Communication
I'm trying to connect between PM585 AC500 cpu and aqua master flow meter over modbus rtu channel. I have already confgiured everything correctly -I hope :)- the communication is done using com2. attached picture show my program settings.
I did the communication with motorolla AC3680 plc and it works well with the indentical flow meter settings.
The com-mod-mast gides me the error code 8211 (time out error)!!
The only thing that I didn't use is the resistors 470ohm and 120ohm!! does that affect my work or not??!!
Hope you can help me.
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