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#22042 - 08/21/10 03:34 PM Comms not working
JPO Offline
newbie


Registered: 08/21/08
Posts: 1
My Ocelot has been working without any problem during three years.
But now, Active led blinks normally (4 Times)but communications led works only when I connect the controller. Afterwards is steady off.
Cmax communicates correctly with the controller but I can't see any SECU 16.
The leds of the secu 16 (I have 8 of them)are steady on, without blinking.
Thank you in advance for any idea to solve the problem.
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#22043 - 08/21/10 04:32 PM Re: Comms not working [Re: JPO]
Guy Lavoie Administrator Offline
Beyond All Hope
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Registered: 12/21/02
Posts: 6401
Loc: Montreal, QC, Canada
Looks like a bad comms chip somewhere. Try connecting just the first SECU16 to the Ocelot (the one with the lowest adnet address) and power it up. If it sees that one ok, then it looks like a bad chip or connection somewhere down the line. If it doesn't work, try it with just the second SECU16 instead. If either test doesn't work, it could be the chip in the Ocelot. If you suspect that one, take the comms chip (8 pin socketed part) out of one of the disconnected SECU16s and use it to replace the same chip in the Ocelot, and try it again. The idea is to proceeed by elimination. These chips are 75176 bus transceivers and are easy to obtain.
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