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Self-diagnosis
LEDs on Master
Slave LEDs
Trans/
Test
Termi-
Trans/
nator
Error
OK
Error
check
lit
--
--
--
not lit
not lit
not lit
--
Programming Console Display
Error
Error code
SR bits
CPU LEDs
LEDS on Master
Slave LEDs
Trans/
Test
Termi-
Trans/
nator
Error
OK
Error
check
--
--
--
--
Fatal Errors
Programming Console Display
Error
Error code
SR bits
CPU LEDs
LEDs on Master
Slave LEDs
Trans/
Test
Termi-
Trans/
nator
Error
OK
Error
check
--
--
--
--
--
--
--
--
7-1-2 C200H Systems
Optical I/O
I/O
Unit LEDs
Link
Unit
LEDs
I/O
Power
Trans/
Trans/
error
Error
Error
lit
--
--
--
--
--
--
--
I/O VER ERR
I/O verification error
E7
For all I/O verification errors
Power: lit
Alarm:
lit
Optical I/O
I/O
Unit LEDs
Link
Unit
LEDs
I/O
Power
Trans/
Trans/
error
Error
Error
--
--
--
--
I/O SET ERR
I/O Setting error
E0
None
Power: lit
Run:
not lit
Error:
lit
Optical I/O
I/O
Unit LEDs
Link
Unit
LEDs
I/O
Power
Trans/
Trans/
error
Error
Error
lit
--
--
--
--
--
--
--
Note If the same Unit number is assigned to more than one Slave or the same data
word is set for I/O points of several Optical I/O Units, data contention occurs on
the I/O bus, causing transmission errors. Transmission errors are also caused
by external light interference if protective caps are not attached to unused con-
nectors.
Lighting and flashing of the Master XMT/RCV LED depends on the unit number
settings of the Master. For Masters #0 and #1, if any of the Masters involved in
Cause
Remote I/O bus error
master error
6110 ON (other than C1000H, C2000H)
25310 ON (C1000H, C2000H)
Cause
Slave Rack Unit loose or an I/O
Unit has been added. Non-remote
I/O word and Optical I/O Unit word
settings overlap.
Cause
Remote I/O Input and Output
Units have been reversed.
Optical I/O Unit input and output
words combined.
Section
7-1
Correction
Check Slave Racks.
Replace Master.
Correction
Verify I/O Table with the Pro-
gramming Console and correct
I/O settings.
Correction
Verify I/O Table with the Pro-
g
gramming Console and correct
g
I/O U it
I/O Units or I/O Table.
I/O T bl
77
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