CTouch resetting

Hi Guys,
I did an install last year with a CTouch spectrum operating some lighting schedules. The client got their maintenance sparkie to add some more schedules, since they did that the touch screen has been randomly resetting. They have replaced the unit with a new one but still does the same thing. I tried reflashing the firmware, and removed a couple of the new schedules. Has anyone experienced this before? The only other thing I can think of is to delete their program and install my original one. This is the message they receive, seems to happen randomly. Thanks for any help.

 

The touch has a logic engine but there is no logic used.

 

Check all the cabling. As the unit is bus powered any cable fault will cause the unit to restart intermittently.

 

OK, would that cause it to lose the time and date settings if it lost power? It's worth a try looking into that.

 

yes, if it has powered down long enough for the Cap to have discharged then it will loose its time and date.

 

Out of interest then, if something else was setting the time on the network why would the CTouch think it was incorrect? Does it do a comparison of the network time and what it thinks the time should be?

I guess the main question is: What are the conditions required for a CTouch to deem the time/date as invalid?

Also for most of the Spectrums, I have found it it only be an hour or 2, we have a couple of sites where they are built into panels that get moved around and if you disconnect one (that had been running for days without a disconnection) then they ask for the time/date to be set.

 

I don't know how the spectrum operates internally, but according to the time keeping protocol any time transmitted on the bus is assumed to be correct and every device should update its time accordingly. It is up to the sending device to make sure it is correct.

The spectrum should be able to request a time update from the system assuming another clock master is operating, but this doesn't seem to be happening here.

Certainly a spectrum touchscreen shouldn't loose its time for a short power outage. Given that the device has been replaced there must be something else going on here. I just can't think of what it could be though

 

That was my presumption so I was wondering what the Spectrum does to determine that it 'thinks' it may be incorrect...