Hello everyone!I have strange problem.I have plc, inverter (mitsubishi), incremental encoder (sick) and motor.When i set the frequency on the inverter about 1,5Hz, the plc correctly counts impulses, but every higher frequency causes the plc counts impulses incorrectly or doesnt count.
Above described things are happening at the rotation of motor in the forward direction. With a rotation of the motor to the rear, high-speed counter doesn't count the impulses.All the parameters of high-speed counters and PLC program i am sure there are right ( i'm using only instruction to start high-speed counting (HIOEN) and to enable interrupt (EI). Input Response Time i had on "No setting" or 10micro-s and nothing.Type of encoder - A/B phase, HTL.PLC - FX5UPLC program - Gx works 3.Maybe somebody had similar problem? Maybe somebody could tell me where i need to look for the solve?
Thanks for help :)