KEYENCE Visual KV Series - Manual (Page 394)

9.6 Troubleshooting KV-10/80 Series Only
KV
-300
KV-10/80
Chapter 9 KV-AD4/DA4 Analog I/O Unit 1-370
9
9.6 Troubleshooting
This appendix describes how to remedy problems that may occur on the KV-AD4/
DA4.
YES
YES
Analog I/O impossible
NO
NO
YES
YES
YES
NO
NO
NO
NO
POWER
indicator lit?
Check connection on
analog I/O terminal block.
Check DIP switch setting.
Analog I/O
possible?
Check sequence program.
Check KV
program
referring
to sample
program.
Check analog
output sequence
program.
Analog I/O
possible?
Analog input
possible?
Analog input
possible?
Contact your nearest
KEYENCE office.
* Analog values may fluctuate slightly after the power is turned ON.
END
CPU POWER
indicator lit?
Check connection
between units.
Make sure that
24 V is supplied
to CPU.
YES
YES
YES
YES
NO
NO
NO
NO
YES
Data memory
DM0992 to DM0995
used for other
purpose?
Only one KV-AD4 or
KV-DA4 each can be
connected to CPU.
Check number of units.
Data memory
DM0996 to DM0999
used for other
purpose?
Data memory
initialized (#2000 written to
DM0996 to DM0999)
Data updated
at rising edge of special
utility relay (2800 to
2803)?
KVHKA Chap 09.p65 08.3.11, 11:20 AM 370