Elons_Musk
Member
Hey guys, I'm not super familiar with Cnet, so I'd like some insight from people with more ControlNet experience than I.
We have a controllogix L55 controller in the field overseeing two 13 slot racks. The first rack houses the previously mentioned processor, a 1756-CNB, a 1756-ENBT/A, and the rest are hard I/O. The second chassis has a 1756-CNB, a 1756-ENBT/A, and the rest of that one is hard I/O as well.
Here is the problem, we are using the ENBT's to pass data to and from our DCS. The first chassis's ENBT works fine, the second does not seem to work, and I don't believe it has ever worked.
As it stands, the DCS grabs values from controller level tags, which effectively means that when we go through the second ENBT, we then need to go through the CNB, over the ControlNet network, to the other CNB, then to the processor and back.
I'm only speculating here, but my guess is that the amount and speed of data acquisition is too high to function over the ControlNet network, or that possibly this type of data acquisition is not even possible. Can anyone confirm or deny this?
We have a controllogix L55 controller in the field overseeing two 13 slot racks. The first rack houses the previously mentioned processor, a 1756-CNB, a 1756-ENBT/A, and the rest are hard I/O. The second chassis has a 1756-CNB, a 1756-ENBT/A, and the rest of that one is hard I/O as well.
Here is the problem, we are using the ENBT's to pass data to and from our DCS. The first chassis's ENBT works fine, the second does not seem to work, and I don't believe it has ever worked.
As it stands, the DCS grabs values from controller level tags, which effectively means that when we go through the second ENBT, we then need to go through the CNB, over the ControlNet network, to the other CNB, then to the processor and back.
I'm only speculating here, but my guess is that the amount and speed of data acquisition is too high to function over the ControlNet network, or that possibly this type of data acquisition is not even possible. Can anyone confirm or deny this?