We lost the communication between the Cimplicity HMI and the Mark-V and all the data are lost on HMI.

On the ArcNet Card only one Led is Lighting fixed but not flashing and the other Led is not lighted at all. When writing the ArcNet command, I received the following:

ArcWho- Runing in Network scan mode. <no network list is available> Network numbers and Network types are not available in scan mode.
Network#0: Unknown type using device CCSI20020Dev1
My address:1E
Nodes found: FE FC 1F.

The fibreOptic cable was tested and found OK.
How we can solve this problem ?Is there anyway to troubleshoot this problem and Can the problem be in the ArcNet card itself?? How we can confirm that the problem in the AtcNet Card??

 

What happened immediately before the loss of communication? Did someone do a MKVMAKE and download to the panel? Did someone download from a different HMI to the Mark V and then download to the panel after doing a MKVMAKE?

Did someone try adding or deleting a point to the CIMPLICITY project on the HMI?

What changed or happened that might have caused this problem? Did someone try copying some CIMPLICITY project files from one HMI to another HMI?

Was a card changed in the <C> processor of the Mark V just before this problem occurred? Has the StageLink ID of the <C> processor been verified (using the LCC/SLCC keypad)?

It would seem from the posting there is another HMI on the network; if that's correct, is it working properly? It also seems there is another Mark V (or EX200) on the network. Is that true?

If there is a fiber optic link, are the RECONFIG LEDs flashing on the MODHUBs? If they are, then there is definitely some problem with the StageLink, physical problem (cable, termination resistors, etc.). It could be on the coaxial cables, or tee connectors, or termination resistors, if you're confident that it's not on the fiber optic cabling.

If there is another HMI that is working correctly, what are the ARCnet card LEDs doing on that card? I can't recall, but some of the cards had an LED that was lit green when everything was okay, and some didn't. It's always good to make notes about these kinds of things when everything is working properly, so that when it's not, you can refer to written information about the states and conditions when things were working properly to compare against when they're seemingly not.

Have you tried ensuring that all of the coaxial tee connectors are securely connected?

When you do the ARCWHO command on the HMI which isn't displaying data, does the LED flash while looking at the StageLink?

Have you tried opening Logic Forcing or a Demand (User Defined) Display to see if data is being updated on those displays? (Those are considered "TCI" displays, and that data is "direct" between the HMI and the Mark V. Data that is displayed on CIMPLICITY displays usually has to go through another service/application (CIMBRIDGE) which runs in the background of MS-Windows on the HMI.)

If there is live, updating data values being displayed in the TCI displays, then the HMI is properly communicating with the Mark V, the data is just not getting from TCI to CIMPLICITY on the HMI. If the TCI displays are not showing live data, then there is likely some problem with the StageLink. Do you have a spare ARCnet card?

Are they any "system" (CIMPLICITY) alarms in the Alarm Window?

There are usually some log files in the CIMPROJ directory or a subdirectory/subfolder. Have you looked at those files to see if there is an indication of what the problem might be?

What is being displayed on the LCC/SLCC display of the <C> core? Any alarms or other unusual conditions? Is the <C> core at I/O Status A7?

There are cables between the CTBA terminal board on <C> and, I believe, the TCCA card in <C> that carry the StageLink communications? Have you used the information in Appendix D of the Mark V Application Manual, GEH-6195, to follow the signals from the CTBA into the <C> core and make sure all the cables are firmly inserted and there is no corrosion on any of the pins/connectors? (Was a light application of conductive grease visible? If not, you might try adding some to the connectors/pins to see if it helps.)

But, if you're getting reasonably good information from ARCwho (and it appears you are) and you are getting live data on TCI displays, then the problem is not the StageLink, it's on the HMI between TCI and CIMPLICITY.

And understanding what happened immediately before this problem was discovered or occurred would be most helpful in trying to resolve the issue.

 

Thank You sir for your kind reply.

You are right, we have another Mark-V control system and also another HMI in the network.

Our Network configuration is that we have 2 Mark-V systems and 2 HMI servers each HMI is connected directly to its respective Mark-V (through arcnet cards and arcnet/fiber cables), the 2 Mark-V systems are also connected together through ArcNet cable so that from any HMI, you can control both Mark-Vs. Now the problem is that one of these 2 HMIs has no any data for both Mark-Vs but the other HMI has no problem and we can work on both Mark-Vs from this healthy HMI.

Before and during the problem, no one touch this HMI. (Not any work was done on it) also no cards changed on Mark-V but we suspect maybe someone turned off then on the power to Mark-V or to the Hub in the Mark-V itself.

Appreciate your comment and advice.