Intelligent Functional Module Stop Working

[Basit Jamil]

Hi, I am facing the strange problem with QCPU (Q03UDE) Controller, I have multiple modules in my project ( Analog, Modbus & Digital Modules) but after some time a random error comes and all my analog Chanel values hold the last values, meanwhile controller does not show any error in the diagnostic tool. After rebooting the PLC power Chanel values start to update. This thing happens randomly. 

Kindly help me. 

Thanks in advance

[Gambit]

check the modules error not the CPU. use the system monitor

[Basit Jamil]

There is no error on the module.And in system monitor i also checked the error but there is no error there.

[Basit Jamil]

this thing happens randomly not on fixed time.

[Gambit]

and when you monitor the values on the BFM and the X/Y off the cards  ?

[Basit Jamil]

The values on the BFM hold its values.

X and Y of Analog Input Module is as follows.

Module Ready X is ON

Temperature Drift Compensation Flag X is OFF

High Resolution mode status flag X is OFF

Operating condition setting completed flag X is ON

OFFSET/Gain setting Mode Flag X is OFF

Channel Change Completed flag X is OFF

Maximum value / Minimum Value reset completed flag X is OFF

A/D Conversion Completed Flag X is ON

Error Flag X is OFF

Operating Condition setting request Flag Y is OFF

User Range Write Request  Y Is OFF

Channel Change Request Y is OFF

Maximum Value / Minimum Value  Reset Request Y is OFF

Error Clear Request Y is OFF

 

 

[Gambit]

Strange, Have you contacted Mitsubishi ?

[Basit Jamil]

No i did not connect mitsubishi.

Previously i just changed my power supply from q61p-A2 to Q64p because there was an error on the PLC error code is 1403 unsupported module is mounted.to resolve this error i replaced my power supply on main chashis with q64p. after replacing the power supply the error 1403 did not occur again but this happened that all my analog inputs modules channel values hold its last value after random time like after 12 hrs or 18 hours.and after power off the plc supply it works normally.