Omron CP1H CPU Operation Manual page 696

Auxiliary Area Allocations by Address
Address Name
Words Bits
A401 A401.14 I/O Bus Error
Flag
(fatal error)
A401.15 Memory Error
Flag
(fatal error)
A402 A402.00 Other Fatal
Error Flag
A402.04 Battery Error
Flag
(non-fatal
error)
662
Function
ON in the following cases:
• When an error occurs in a data
transfer between the CPU Unit
and a CP-series Expansion Unit or
Expansion I/O Unit. If this hap-
pens, 0A0A hex will be output to
A404.
• When an error occurs in a data
transfer between the CPU Unit
and a CJ-series Unit. If this hap-
pens, 0000 hex will be output to
A404 to indicate the first Unit,
0001 hex to indicate the second
Unit, and 0F0F hex to indicate an
undetermined Unit.
• When the End Cover is not
attached to the last CJ-series Unit.
If this happens, 0E0E hex will be
output to A404.
CPU Unit operation will stop and the
ERR/ALM indicator on the front of
the CPU Unit will light.
(This flag will be turned OFF when
the error is cleared.)
ON when an error occurred in mem-
ory or there was an error in auto-
matic transfer from the Memory
Cassette when the power was turned
ON.
CPU Unit operation will stop and the
ERR/ALM indicator on the front of
the CPU Unit will light.
The location where the error
occurred is indicated in A403.00 to
A403.08, and A403.09 will be turned
ON if there was an error during auto-
matic transfer at startup.
This flag will be turned OFF when
the error is cleared. (The automatic
transfer at startup error cannot be
cleared without turning OFF the
PLC.)
ON when a non-fatal error that is not
defined for A402.01 to A402.15
occurs. Detailed information is output
to the bits of A314.
There are no errors that affect this
flag at this time. This flag is reserved
by the system.
ON if the CPU Unit's battery is dis-
connected or its voltage is low and
the Detect Battery Error setting has
been set in the PLC Setup.
The CPU Unit will continue operating
and the ERR/ALM indicator on the
front of the CPU Unit will flash.
This flag can be used to control an
external warning light or other indica-
tor to indicate that the battery needs
to be replaced.
(This flag will be turned OFF when
the error is cleared.)
Settings Status Status
after at star-
mode
change
ON: Error Cleared Cleared
OFF: No error
ON: Error Cleared Cleared
OFF: No error
OFF: No Cleared Cleared
other fatal
error
ON: Other
fatal error
ON: Error Cleared Cleared
OFF: No error
Appendix D
Write Related
timing flags, set-
tup tings
Refreshed A404
when error
occurs.
Refreshed A403.00
when error to
occurs. A403.08,
A403.09
Refreshed A315
when error
occurs.
Refreshed PLC
when error Setup
occurs. (Detect
Battery
Error)