[Fews] Sniffer PLC problem

[Will Brooks]

Hi,

 The trouble lamp gets illuminated based on a number of possible 
conditions. You should be able to search on the variable "trouble_lamp" 
or something like that in the software and find all the conditions that 
cause it to be lit. If you can print out the program or save it to a 
pdf, I can find it. I used to be able to VNC into the PC, but I assume 
that has been eliminated by now.

 That's all assuming the program is working normally.

 I think the rapidly blinking Modbus plus light is normal, indicating 
the network is working ok. I can't remember what the F means, but the 
manuals for the modules should be nearby. One thing you can check is the 
DC power supply (little black module, Krister should remember it), I 
think it's 12 Volts, if it's not working it will result in a trouble 
condition. However, I wouldn't expect that to keep the sniffer from 
cycling, most likely the trouble is with the sniffer, probably the LN2 
filler signal or something like that.

 Let me know if you want me to do something, I'm happy to try to help.

Thanks,

 - Will



Steve Christo wrote:
> The sniffer quit cycling on Friday afternoon, 10/2/09. Installed OS 
> updates today, rebooted PC, cycled power on PLCs, downloaded fresh PLC 
> software. The LabView control program is hanging when it waits for a 
> response to from the PLC when initializing. Am able to communicate with 
> PLC through "Concept" program, i.e. upload, download programs, view 
> status, etc.. The Alarm rack shows a persistent lit yellow "Trouble" 
> light. Krister and I could not figure out what that means from the PLC 
> software. Also, four of the PLC analog modules are showing a red "F" on 
> the front panel next to the "Active" light. Two of the modules are 
> showing a rapidly blinking "Modbus+" light. I don't know if any of these 
> module conditions is normal. What can make the "Trouble" lamp to light? 
> Will? John?
> Steve
>
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