error code help

[asadmalik]

Dear friend I am new commer in mitsubish plcs . In a plant we are using no. of mitsubish plcs in a network i.e one master and no. of client interlink via fiberoptic link . The problem is master plc Cpu Q12H having constant indication of error led how ever the program and operation working perfectly . when i diagnoses the fault via laptop it show error code 5010 ( i.e constant scan time or low speed program problem ) in software manual i search that fault but no solution found till yet . Have anyone help me to know how to removed the code error 5010 , or what does this error actually Revealed . As i am new in this brand of plc and also don't familiar with the constant scan time and low speed program means of plc please help me for this situation Regards MAlik

[mjrx]

Compare your actual scan time while monitoring with what is set in <PLC Parameter> tab <PLC RAS>. It sounds like your actual scan time is longer then what your constant scan time setting is. Also check register SD526, this will contain your programs maximum scan time in mS. If this exceeds your Constant Scanning parameter this will set the error.