817
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
36 Operation of Special Devices (M8000 -, D8000 -)
36.1 Special Device List (M8000 -, D8000 -)
31
FN
C
275-FN
C
279
Da
ta
Tr
ans
fe
r 3
32
FN
C
280
-F
N
C
28
9
H
igh Speed
Pr
oces
si
ng 2
33
FN
C
290-FN
C
299
Ext
ensi
on Fi
le
R
egi
st
er
34
SF
C
•S
T
L
Pr
o
g
ra
m
m
in
g
35
In
te
rru
p
t
Funct
ion
36
Sp
e
cia
l De
vic
e
37
E
rro
r C
o
d
e
A
V
e
rs
ion U
p
In
fo
rm
a
tio
n
B
Ex
ec
ut
ion Ti
m
e
s
C
Appl
ic
ab
le
In
st
ru
ct
ion Li
st
Stepladder and Annunciator
[D]8040
*1
ON state number 1
The smallest number out of active state ranging from
S0 to S899 and S1000 to S4095
*2
is stored in D8040
and the second-smallest state number is stored in
D8041.
Active state numbers are then sequentially stored in
registers up to D8047 (Max. 8 points).
3
3
M8047
3
3
3
3
3
[D]8041
*1
ON state number 2
3
3
3
3
3
3
3
[D]8042
*1
ON state number 3
3
3
3
3
3
3
3
[D]8043
*1
ON state number 4
3
3
3
3
3
3
3
[D]8044
*1
ON state number 5
3
3
3
3
3
3
3
[D]8045
*1
ON state number 6
3
3
3
3
3
3
3
[D]8046
*1
ON state number 7
3
3
3
3
3
3
3
[D]8047
*1
ON state number 8
3
3
3
3
3
3
3
[D]8048
Not used
–
–
–
–
–
–
–
–
[D]8049
*1
On state minimum
number
When M8049 is ON, the smallest number out of
active annunciator relay ranging from S900 to S999
is stored in D8049.
3
3
M8049
–
–
3
–
3
[D]8050 to [D]8059
Not used
–
–
–
–
–
–
–
–
*1.
Executed at END instruction.
*2.
S1000 to S4095 are available only in FX
3U
/FX
3UC
PLCs.
Error Detection (Refer to Chapter 37 for details.)
[D]8060
If the unit or block corresponding to a programmed
I/O number is not actually loaded, M8060 is set to ON
and the first device number of the erroneous block is
written to D8060.
3
3
M8060
–
–
3
–
3
[D]8061
Error code for PLC hardware error
3
3
M8061
3
3
3
3
3
[D]8062
Error code for PLC/PP communication error
3
3
M8062
–
–
3
–
3
[D]8063
Error code for serial communication error 1 [ch1]
3
3
M8063
3
3
3
3
3
[D]8064
Error code for parameter error
3
3
M8064
3
3
3
3
3
[D]8065
Error code for syntax error
3
3
M8065
3
3
3
3
3
[D]8066
Error code for ladder error
3
3
M8066
3
3
3
3
3
[D]8067
Error code for operation error
3
3
M8067
3
3
3
3
3
D 8068
*3
Operation error step number latched
3
*4
3
*4
M8068
3
3
3
3
3
[D]8069
*3
Error step number of M8065 to M8067
3
*5
3
*5
M8065 to
M8067
3
3
3
3
3
*3.
Cleared when PLC switches from STOP to RUN.
*4.
In case of 32K steps or more, step number is stored in [D8313, D8312].
*5.
In case of 32K steps or more, step number is stored in [D8315, D8314].
Number and name
Content of register
Applicable model
FX
3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
2N
FX
1NC
FX
2NC
1 0 2 0
1: Input X 0: Output Y
Device number 10 to 337
Example: If X020 is unconnected.
BCD converted value
