denman_100
Member
Hi,
We have a 90-30 CPU (374 Plus) with a CMM311 on Rack 0. It is using RS232 to communicate with a Siemens MP270B touchpanel. It was working before, but the PLC experienced a fault the other day. Ever since, the OK LED on the CMM311 is flashing, not constant. The restart pushbutton does not fix it. I've uploaded the hardware configuration again, but it still does not fix it. Any suggestions?
We have a 90-30 CPU (374 Plus) with a CMM311 on Rack 0. It is using RS232 to communicate with a Siemens MP270B touchpanel. It was working before, but the PLC experienced a fault the other day. Ever since, the OK LED on the CMM311 is flashing, not constant. The restart pushbutton does not fix it. I've uploaded the hardware configuration again, but it still does not fix it. Any suggestions?