Comfort is down

[dcrera]

Hi

I am trying to restore Comfort from communication failure 92 on one of me SCS.

Usually powering the system off and on will rectify the problem.

Three hours into trouble shooting, I am clueless.

The is no voice on the keypad, the engineer\'s signon reports invalid code (F0).

It however responds to the regular signon via Comfigurator.

Tried removing all power to the system for an hour, still no joy

Need help

Thanks

 

 

 

 

[slychiu]

If there is no voice on the keypad, do a Vocab download. Your system may have lost the voice somehow
TRansfer > Vocab download, select  kate28.bin download from webskite

[dcrera]

Hi

Had the system powered off for 12 hours. Restored power this morning and all seemed to be fine, 5 minutes later, problem reoccurs.

It now reports a different comms failure ID after each power off. Keypad reports SCS/RIO 11. The leds on the SCS are blinking when pressed. Keypad locks after a few button press.

ps: date on the keypad is showing 8 Jun 2008

Desperately seeking your assistance
 

Thanks

 

[slychiu]

I suspect one of the devices on the KA/KB is locking up the Rs485 bus. It could be one of the slaves of SCS or other modules

When you have this problem, start disconnecting the modules one by one from the KA/KB Rs485 bus until the communbications is restored and the keypad has voice

Also send the event log and the ccl file to support@cytech.biz for us to look at

[dcrera]

Hi,

Just for clarification :

I understood that unpluging an SCS without changing the no of SCS/RIO on the Modules & Setting will cause a comms failure and a beeping keypad ? So I am wandering if unplugging the SCS/RIO is not going to cause a comms failure by default.

Thanks

 

 

[slychiu]

Yes, unplugging a SCS or any other module wil cause a communication failure
However the situation with your Comfort (ie keypad does not respond) could be due to the whole bus being tied down by a faulty module or perhaps shorted wiring
Hence unplugging each module may remove the shorted module from the bus and let the system recover, so you can find the faulty module
You should also check that the bus wires are not shorted

[dcrera]

Thanks, will try tonight

 

 

[dcrera]

Hi,

Added power to Comfort after 13 hours.

System seems to be \'norma\'l. I had a comms problem with Serial UCM (Ucm 2) after checking I found it disconnected from last night. Replaced cable and received another  comms failure on UCM 2 when someone pressed the door station.

Please take a look at my ccl and event log and feedback for a solution

Thanks

ps : I been a hour since Comfort is up with no issues

[dcrera]

Hi

Event log

[slychiu]

From the event log, when the problem occurs all the modules, KP, DP, SCS  report communications failure. You keypad has no voice because it cannot communicate
This supports what I suspected, that either a short on the Rs485 KA/KB bus or a faulty module caused all the modules to be unable to communicate with Comfort
Each time the Door station is reported first in the log as showing communications failure.
Your system seems to have recovered which means the short or fault is intermittent
When this happens again, unplug the Door station from the bus, and se if it recovers.
If not continue with the SCS modules.