Get Status of Panelvew Plus 7

[dmoore26]

I am looking read the connection status of a Panelview Plus 7 Standard v9 with a ControLogix PLC v24 to be able to create an alarm in a SE application if communication is lost between the PLC and HMI. Has anyone done something like this?

Thanks.

 

[widelto]

Yes, you have to include your PV under your PLC tree.
I got an example, send me a PM with your email. I only got version V30.

 

[dmoore26]

I spoke to a Rockwell tech person, and I was told you could not do that

 

[Phrog30]

Global connection and macro should work for you.

 

[JZerb]

Global connection. Use the tag that reads the Seconds from the PV. Attach that to a tag in the controller that's labeled HMISeconds, or whatever you'd like. Then create a tag labeled HMIWacthDogSeconds, or whatever you'd like.


All below on the same rung
NEQ (Source A HMISeconds) (Source B HMIWatchDogSeconds)
MOV (Source HMISeconds) Dest (HMIWatchDogSeconds) Timer (RES)


Rung Below
With no logic in front of it TON (Timer)

Branch
(Timer.DN) OTL (For alarm bit)

 

[dmoore26]

Global connection. Use the tag that reads the Seconds from the PV. Attach that to a tag in the controller that's labeled HMISeconds, or whatever you'd like. Then create a tag labeled HMIWacthDogSeconds, or whatever you'd like.


All below on the same rung
NEQ (Source A HMISeconds) (Source B HMIWatchDogSeconds)
MOV (Source HMISeconds) Dest (HMIWatchDogSeconds) Timer (RES)


Rung Below
With no logic in front of it TON (Timer)

Branch
(Timer.DN) OTL (For alarm bit)

Ill give that a try, thanks.

 

[Ken Roach]

I use the global connection method to write Seconds into the PLC. That not only verifies that there's a good network connection, but also that the FactoryTalk View application is still executing.

Because FactoryTalk Linx cannot establish a cyclic I/O connection, you should not put a PanelView Plus into the I/O tree. It used to interfere with the connection, but now it just wastes a buffer.

The old PanelView Standard terminals could run an I/O connection, and the modern PanelView 5000's have a sophisticated cyclic connection for fast pushbutton type features. But not the PV+.

 

[dmoore26]

The global connection method worked great. Thanks for the help.