Error Code List
Error code list
If an error occurs in the RUN mode. an error display of error code (including
a step number) is stored in the special register by the self-diagnostic
function. The error code reading procedure and the causes and corrective
actions for errors are shown in Table 9.1.
Table 9.1 Error Code List
Error and Cause
Instruction code, which cannot be
(1) Read the error step
decoded by CPU, is included in
peripheral device and correct
the program at that step.
(1) ROM including invalid instruction
(2) In the case of ROM, rewrite the
code, has been loaded.
contents of the ROM or change
(2) Memory contents have been
(3) The PR and IRET instructions
The parameter contents of CPU
(1) Check the loading of CPU mem-
memory are changed due to noise
ory and load
or incorrect loading of memory.
(2) Read the parameter contents
power on, reset,
of CPU memory, check and
STOP to RUN,
correct the contents, and write
PAUSE 10 RUN)
them to the memory again.
There is no END (FEND) instruc-
Write END at the end of the pro-
tlon in the program.
STOP 10 RUN.
PAUSE 10 RUN)
(1) There is no jump destination
Read the error by use of peripheral
or plural destinations specified
device and correct the program at
by the [CJ], [SCJ], [CALL],
(Make correction such
[CALLP], or [JMPI instruction.
as the insertion of jump destina-
(2) Although lhere is no [CALL]
lion or lhe changing of jump des-
instruction, the [RET] instruction
tinations to one.)
to NEXT] execu-
exists in the program and has
RUN, PAUSE 10
(3) The [CJ], [SCJ], [CALL].
[CALLP]. or [JMP] instruclion
has been executed with its jump
destination located below the
(4) The number of [FOR] instruc-
tions does not match that of
(5) The [JMP] instruction specified
belween [FOR 10 NEXT] hes
caused execution to deviate
from between [FOR 10 NEXT].