Re: [foxboro] FBM 233 to Controllogix question

David,

Did you manage to resolve this issue? I am having similar issues with an 
installation which has hung 3 times since implemented in September. The 
system is lightly loaded <30 tags. I'm talking to two controllogix PLC's.

Here's the rub. The points don't go cyan, but they stop updating so 
everything looks OK from an operator's and  System Monitor's point of view.

I will implement a watchdog alarm to let the operator know it's time 
reset the FBM233 from system management to re-start communications.

mk

David Johnson wrote:
> Hi all,
>
> I am working with a customer running a fault tolerant connection 
> (FBM233) to fault tolerant controllogix processors using Foxboro's 
> ethernet IP driver.  We started with an older version of the driver, 
> but quickly had field service upgrade everything to the latest back 
> in March.  Everything will work for several (many) weeks and then all 
> of the blocks being passed to and from the gateway will smurf at the 
> same time.  We are having to re-boot the CP to clear this condition 
> (it might be enough to re-download the fbms and go off line and back 
> on-line, but they haven't tried that when the crisis occurs).  We are 
> not adding or deleting any blocks in the configuration, and to the 
> best of my knowledge the primary and secondary controllogix modules 
> are not swapping, neither are the primary and tracker FBMs swapping 
> (again, as far as I can tell.)  In other words it appears to work 
> until it quits.  When it is working none of the points appear to be 
> smurfed and everything going to/from the PLC looks like a valid 
> controller tag.  The time interval between failures is not constant, 
> but they have seen this occur 3 times in the last 5 months.
>
> The data load is reasonably light, only 262 controller tags.  The ecb 
> 201 has the timeout set at 5 seconds, which should be plenty of time 
> if there is a network problem that corrects itself.
>
> So I was wondering if anyone else has seen this or knows of issues 
> that might cause this performance issue on the FBM233 with EthernetIP.
>
> Thanks,
> David
>
>
>  
>  
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