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c#modbusmodbus-tcp

C# Modbus get a lot register every 20 seconds

I've made an application with C#, in this application I have to read every 20 second 840 registers of PLC via Modbus TCP. I use this library http://www.codeproject.com/Tips/16260/Modbus-TCP-class. When I use the method

Master.ReadHoldingRegister(ushort id, byte unit, ushort startAddress, ushort numInputs)

It return a bytes array of lenght 144 and not 1680, do you have any idea?

Solution

  • As suggested add a bit of delay between the calls.