Hello all,
This is my first post on the forum and I hope somebody could help me, in factory we have one system for nitrating tools (furnace), and heart of the system is PLC OMRON CQM1-H CPU21,system existed since 2005,ok now problem is: before two days furnace stopped, message on the Scada PC was,cominication problem with PLC,all led diodes on the PLC turned off(RUN,ERR/ALM,INH,PRPHL) except diode COMM which is blinked, any outputs doesn’t work, from inputs we are have only auto/man (form double switch on the door).
We can’t to communicate with PLC over CX Programmer, we mistrust the CPU doesn’t work.
Is somebody having similar problem (according to symptoms) and what is reasons for that.
Thank you in advance.
This is my first post on the forum and I hope somebody could help me, in factory we have one system for nitrating tools (furnace), and heart of the system is PLC OMRON CQM1-H CPU21,system existed since 2005,ok now problem is: before two days furnace stopped, message on the Scada PC was,cominication problem with PLC,all led diodes on the PLC turned off(RUN,ERR/ALM,INH,PRPHL) except diode COMM which is blinked, any outputs doesn’t work, from inputs we are have only auto/man (form double switch on the door).
We can’t to communicate with PLC over CX Programmer, we mistrust the CPU doesn’t work.
Is somebody having similar problem (according to symptoms) and what is reasons for that.
Thank you in advance.