I am using RaspberryPI 3B as ModbusTCP slave device. Until now I was using Codesys Control fOR Raypberry version 3.5.14 and it was working OK. Now I have updated the Raspberry with Codesys Control 3.5.16 and Modbus is working very slow. Reading and writting into Modbus registers is very slow.
What could be the reason?
I have solved this.
Bus Cycle Task has to be set to "Task"
Always Update Variables has to be set to "Enabled 2 (always in bus cycle task)"
Now it is working with normal speed.
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