
B–61863E/15
6. LADDER DIAGRAM MONITOR
AND EDITOR
PMC–NB6 MANIPULATION
733
Pressing Return key [<] or [UPDATE] soft key will analyze edited
LADDER program and try to generate executable objects. If some error
is found at analyzing phase, you will see error message on screen, and
according to kind of error, cursor may jump to the place where the error
is found.
Following table shows error messages expected at LADDER analysis and
their meanings and solutions.
Error message Meaning and solution
CALL/CALLU IN
BAD LEVEL.
Meaning:
CALL/CALLU is used in wrong place.
Solution:
CALL/CALLU must be used in Level 2 or in subpro-
grams. Do not use any other places.
COME IN JMP.
Meaning:
COME is found between JMP and JMPE, and COM
and corresponding COME have different JMP/JMPE
status.
Solution:
COME and corresponding COM must have same
JMP/JMPE status. Review COM range and JMP
range, to adjust not to overlap with each other: it is
possible that one range includes the other completely.
COME WITHOUT
COM.
Meaning:
There is no COM that corresponds to this COME.
Solution:
If COM is missing, add it in proper position. If the
COME is unnecessary, remove it.
DUPLICATE
END1.
DUPLICATE
END2.
DUPLICATE
END3.
Meaning:
Multiple END1, END2, or END3 are found.
Solution:
Remove extra END1, END2, or END3.
DUPLICATE LBL.
Meaning:
Same L–address is used in plural LBLs.
Solution:
If some of these LBLs are unnecessary, remove them.
If all of these LBLs is necessary, assign other L–ad-
dresses to them to make all LBLs unique.
DUPLICATE P AD-
DRESS.
Meaning:
Same P–address is used in plural SPs.
Solution:
If some of these SPs are unnecessary, remove them.
If all of these SPs is necessary, assign other P–ad-
dresses to them to make all SPs unique.
6.2.4
Error Messages and
Their Solutions