Basic Hardware and Function
301
10. Troubleshooting
Error message and related information
Special
Meaning and countermeasures
Event
Info 1
Info 2
Info 3
device
Batt voltage drop
S00F
In the power-up initialization, data invalidity of
RAM (back-up area) has been detected.
If retentive registers are used, these validity
are not guaranteed. (No error down)
Boundary error
Program
type -
Address
in the
FUN No.
The register of index modification is other
than RW, T, C and D. (Error down)
block No. block
S064
The register designated by index modification
has exceeded the allowable range. That is,
out of RW, T, C and D.
(No error down)
Check the value of the index register.
Clock-calendar error
S00A
The data of built-in calendar LSI is illegal.
(No error down)
Set the date and time. (T1S only)
Duplicate entry No.
Program
type -
block No.
Address
in the
block
Entry No.
Multiple SUBR instructions which have the
same subroutine number are programmed.
(Error down)
Check the program.
EEPROM BCC error
Illegal
BCC
S004
S013
BCC error has been detected in the user
program of the EEPROM. (Error down)
Reload the program and execute EEPROM
write operation again.
EEPROM warning
Number
of excess
writing
S007
The number of times of writing into EEPROM
has exceeded the life (100,000 times). (No
error down)
Replace the unit because the data reliability
of the EEPROM will decrease.
I/O bus error
Unit No.
Data
S005
S020
An abnormality has been detected in I/O bus
checking. (Error down)
Check the expansion cable connection and
I/O module mounting status.
I/O mismatch
Unit No. -
slot No.
Register
No.
S005
S021
The I/O allocation information and the actual
I/O configuration are not identical.
(Error down)
Check the I/O allocation and the option card
mounting status.
I/O no answer
Unit No. -
slot No.
Register
No.
S005
S022
No response from the T2 I/O module has
been received. (Error down)
Check the I/O allocation, the expansion cable
connection and the T2 I/O module mounting
status.
I/O parity error
Unit No. -
slot No.
Register
No.
S005
S023
I/O bus parity error has been detected in data
read/write for T2 I/O modules. (Error down)
Check the expansion cable connection and
the T2 I/O module mounting status.
Illegal I/O reg
Unit No. -
slot No.
Register
No.
S005
S021
The allocated I/O register address exceeds
the limit, 32 words. (Error down)
Check the I/O allocation.
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