FX Series Programmable Controller Diagnostic Devices 6
6-17
Continued on next pa
e...
Error Detection
Device
Stored Error
Number
Associated Meaning Action
D8066
Circuit error
0000 No error
A circuit error occurs if a
combination of instruc-
tions is incorrect or badl
specified. Select pro-
rammin
mode and
correct the identified
error.
6601
LD and LDI is used continuousl
9 or
more times in succession
6602
1) No LD/ LDI instruction.
Unauthorized use of the LD / LDI,
AND / ANI instructions
2) The followin
instructions are not con-
nected to the active bus line:
STL, RET, MCR, (P)ointer, (I)nterrupt,
EI, DI, SRET, IRET, FOR, NEXT,
FEND and END
3) When MPP is missin
6603
MPS is used continuousl
more than 12
times
6604
Unauthorized use of the MPS/ MRD/
MPP instructions
6505
1) A sin
le STL branch drives 9 or more
parallel circuits
2) MC/ MCR or (I)nterrupts are desi
-
nated within an STL state
3) RET has not been desi
nated or is
desi
nated out of an STL state
6606
1) No (P)ointer/ (I)nterrupt
2) No SRET/ IRET
3) An (I)nterrupt/ SRET or IRET has
been desi
nated within the main bod
of the pro
ram
4) STL/ RET/ MC or MCR have been
desi
nated within either a subroutine
or an interrupt routine
6607
1) Unauthorized use of FOR - NEXT.
6 or more levels have been desi
-
nated
2) The followin
instructions have been
desi
nated within a FOR -NEXT loop:
STL/ RET/ MC/ MCR/ IRET/ SRET/
FEND or END
6608
1) Unauthorized MC/ MCR relationship
2) Missin
MCR N0
3) SRET/ IRET or an (I)nterrupt has been
desi
nated within an MC/ MCR block
6609 Other error
