Hello,
First of all I'd like to say this is my first post to this board although I have been lurking around reading posts for a while.
I would like to extract the LED status from a ControlNet module 1756-CNBR (redundent media). I have checked the AB knowledgebase and know about the option of using a CIP MSG instruction, but to do this I would need to create a UDT in ControlLogix. I can not take the processor down or put it in program to create a UDT since it is in a running plant.
I also know how to extract fault data using a GSV instruction. The problem is the ControlNet module does not display a fault if one of the two Controlnet connections is bad. The module is always happy as long as one of the two connections is OK. The only way I know how to monitor Ch A status and CHB status is by looking at the LED's on the module. Currently my ChB is down, and the LED is flashing red, but the module does not report a fault code.
I doesn't seem possible to extract LED status using a GSV instruction.
Anyone have any ideas?
First of all I'd like to say this is my first post to this board although I have been lurking around reading posts for a while.
I would like to extract the LED status from a ControlNet module 1756-CNBR (redundent media). I have checked the AB knowledgebase and know about the option of using a CIP MSG instruction, but to do this I would need to create a UDT in ControlLogix. I can not take the processor down or put it in program to create a UDT since it is in a running plant.
I also know how to extract fault data using a GSV instruction. The problem is the ControlNet module does not display a fault if one of the two Controlnet connections is bad. The module is always happy as long as one of the two connections is OK. The only way I know how to monitor Ch A status and CHB status is by looking at the LED's on the module. Currently my ChB is down, and the LED is flashing red, but the module does not report a fault code.
I doesn't seem possible to extract LED status using a GSV instruction.
Anyone have any ideas?