B
Bart
- Jan 1, 1970
- 0
Hi All,
I've been in contact with a guy who has a CNC machine who's controller uses
optocouplers. Here;s a picture:
http://home.fuse.net/consultec/misc/images/optocouplers_.JPG
The one on the right works and there WAS an identical one on the left that
failed and the manufacturer sent a new one that looks different and doesn't
work. You can see the new one on the left does have a different design. Upon
finding the new one doesn't work, the manufacturer sent another, identical
to the first one they sent and it still doesn't work. The guy is convinced
they're sending the wrong style because he's swapped optocouplers and
wherever he puts the original (the one on the right) it works.
Is there something obvious about what is going on? Is one for RS232 and the
other for TTL or 0-20milliamp? Is the output side of the chip the problem?
Is there enough info here to even make a determination?
This is beyond me, hoping someone recognizes the two different circuits and
can give some input.
Thanks in advance,
Bart
I've been in contact with a guy who has a CNC machine who's controller uses
optocouplers. Here;s a picture:
http://home.fuse.net/consultec/misc/images/optocouplers_.JPG
The one on the right works and there WAS an identical one on the left that
failed and the manufacturer sent a new one that looks different and doesn't
work. You can see the new one on the left does have a different design. Upon
finding the new one doesn't work, the manufacturer sent another, identical
to the first one they sent and it still doesn't work. The guy is convinced
they're sending the wrong style because he's swapped optocouplers and
wherever he puts the original (the one on the right) it works.
Is there something obvious about what is going on? Is one for RS232 and the
other for TTL or 0-20milliamp? Is the output side of the chip the problem?
Is there enough info here to even make a determination?
This is beyond me, hoping someone recognizes the two different circuits and
can give some input.
Thanks in advance,
Bart