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[doug]

I have been using my CM15A and all was
functioning well.  I recently plugged the
CM15A into my USB port to make changes to
my timers, and my system will not recognize
the CM15A.  Can anybody help???

[ajay]

take the baqtteries out and then plug in

[dehata01]

I had the same issue and removing the batteries fixed it

[KDR]

Not sure of your setup but does your USB cable run along side any power cables? It may be that if the light is making a lot of noise, that the noise is being picked up by the USB cable if it runs parallel with a power cable. This shouldn't effect it but may indicate you have a bad or poor USB cable itself.

You can try to relocate the cable to the CM15A to see if this helps. I run 2 USB extensions on my controller and every now and then the AHP software pops up an error saying it lost communications. and asks if I want to download to the controller. Also inspect the USB plug ends for any damage. Be sure to unplug them and then plug them back in. Could be a dirty or bad plug connection.

[Dan Lawrence]

I get that "every now and then the AHP software pops up an error saying it lost communications and asks if I want to download to the controller" message too.

I think it's AHP that looses the communications all by itself , not the USB cable. My CM15A is on a cable all its own and the cable is not the clear one that comes with it. I didn't like it (it seemed too lightweight) and replaced it.

The message may be a probgramming bug.

[KDR]

You may be right Dan, seems others have posted the same thing. I did notice however that I got the error less when I didn't have the USB extensions. However the benefits to getting the CM15A away from the computer and to higher ground is worth the occasional error.