Mitsubishi Electric Melsec-k Instruction Manual page 84

Optical data link system
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_
c
5. OPERATING PROCEDURE
Ll E L8EBnK
~
Error
Numbe
c10
c11
Error
Code
1 t o F999
(Error
step
number)
0
CPU
State
Run
con tin ue d
stop
stop
Content and Cause of Error
~
(1
)
Result of BCD conversion has
(2)s (source) intended to be converted
exceeded "9999".
i
into binary is not decimal.
,
Instruction code error
The instruction codes of program
during operation processing include a
code which cannot be decoded by
CPU.
Example:
I
2-step and 3-step instructions are not
corn plete.
IOLD
XO
11 OUT TO-There
is
no
set value.
12LDI M O
13PLS M I
14 MOV
-This
is MOV instruc-1
15
D O ]
tion but does not'
160UT
FIOO
have
3
steps.
17END
Sequence end cannot be executed
because jump by CJ instruction has
been made t o the destination which i s
located below sequence program end
OUT FIOO.
io0
END
Corrective Action
(1)Move the RUN key switch to
"STOP" position.
(2) Monitor
DA05
by
K7PU E,
K8GPPE, etc. to check the error
step
number.
(The error step
number indicates the head step
of instruction which has resulted
in error.)
20 1
2 0 0 t ; " . - r r r t t
BCD DO K4Y30
* I n the above figure, t h e error
step is the head step 201 of BCD
instruction.
(3) Read and correct the program with
error step number. When
S
(source)
is data register
(D),
correct the
program which i s stored in the data
register.
(4)Perform reset by the RESET key
switch.
(5)Move the RUN key switch to
"
R U N
"
position.
Table 5.5 CPU Error List (Continued)
(1)Move the RUN key switch t o
"STOP" position.
(2)Check the error step number in
"TEST" mode of K7PUE, K8GPPE,
etc.
(3)Perform reset by the RESET key
switch.
(4) Read and correct the program with
error step number. When the error
step number i s
0,
the error may be
due t o the jump destination of CJ
instruction. Therefore, when step
0
is normal,
retrieve the CJ in-
struction and correct the jump
des
ti
na
ti
on.
(5)Move the RUN key switch t o
"RUN" position.
83

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