Appendix A: Special Device List
191
FX
3S
Series Programmable Controllers
User's Manual - Hardware Edition
11
Bui
lt-
in Anal
og
12
O
utpu
t Wi
ring
13
Wiri
ng for
Va
rious U
ses
14
Te
st R
un,
M
ain
tenanc
e,
Troub
le
shooting
15
Oth
er Ex
tensi
on
U
nit
s and
Opti
ons
16
Displ
ay
Modul
e
(FX
3S
-5
D
M
)
17
Me
m
ory
C
ass
ette
A
S
pecial D
evice
s
(M
8000-,
D8000-)
B
Instruc
tion Li
st
C
Di
sc
onti
nued
model
s
Appendix A-1 Special Auxiliary Relay (M8000 to M8511)
*1.
Cleared when PLC switches from RUN to STOP.
*2.
1 ms ring counter (D8399, D8398) will operate after
M8398 turns ON.
*3.
Cleared when PLC switches from RUN to STOP or
when RS2 instruction [ch1] is OFF.
*4.
Used when the SNTP function setting is set to "Use"
in the time setting parameters.
Number and name
Operation and function
Correspond-
ing special
device
Positioning
[M]8330 to [M]8337 Not used
-
M 8338
*1
PLSV instruction (FNC157):
Acceleration/deceleration operation
-
[M]8339
Not used
-
[M]8340
[Y000] Pulse output monitor
(ON: BUSY/ OFF: READY)
-
M 8341
*1
[Y000] Clear signal output function
enable
-
M 8342
*1
[Y000] Zero return direction
specification
-
M 8343
[Y000] Forward limit
-
M 8344
[Y000] Reverse limit
-
M 8345
*1
[Y000] DOG signal logic reverse
-
M 8346
*1
[Y000] Zero point signal logic
reverse
-
M 8347
Not used
-
[M]8348
[Y000] Positioning instruction
activation
-
M 8349
*1
[Y000] Pulse output stop command
-
[M]8350
[Y001] Pulse output monitor
(ON: BUSY/ OFF: READY)
-
M 8351
*1
[Y001] Clear signal output function
enable
-
M 8352
*1
[Y001] Zero return direction
specification
-
M 8353
[Y001] Forward limit
-
M 8354
[Y001] Reverse limit
-
M 8355
*1
[Y001] DOG signal logic reverse
-
M 8356
*1
[Y001] Zero point signal logic
reverse
-
M 8357
Not used
-
[M]8358
[Y001] Positioning instruction
activation
-
M 8359
*1
[Y001] Pulse output stop command
-
[M]8360 to [M]8369 Not used
-
High-speed counter function
[M]8380 to [M]8387 Not used
-
[M]8388
Contact for high-speed counter
function change
-
[M]8389 to [M]8391 Not used
-
M 8392
Function changeover device for
C248 and C253
-
[M]8393 to [M]8397 Not used
-
Ring counter
M 8398
Ring counter operation
(in units of 1 ms, 32 bits)
*2
D8398
D8399
[M]8399
Not used
-
Number and name
Operation and function
Correspond-
ing special
device
RS2 instruction (FNC 87) [ch1]
[M]8400
Not used
-
[M]8401
*3
RS2 instruction (FNC 87) [ch1]
Send wait flag
-
M 8402
*3
RS2 instruction (FNC 87) [ch1]
Send request
D8402
M 8403
*3
RS2 instruction (FNC 87) [ch1]
Receive complete flag
D8403
[M]8404
RS2 instruction (FNC 87) [ch1]
Carrier detection flag
-
[M]8405
RS2 instruction (FNC 87) [ch1]
Data set ready (DSR) flag
-
[M]8406 to [M]8408 Not used
-
M 8409
RS2 instruction (FNC 87) [ch1]
Time-out check flag
-
[M]8410 to [M]8420 Not used
-
MODBUS communication [ch1]
[M]8401
MODBUS request in process
-
[M]8402
MODBUS communication error
D8402
[M]8403
MODBUS communication error
(latched)
D8403
[M]8404 to [M]8407 Not used
-
[M]8408
Retry
-
[M]8409
Timeout
-
[M]8410
Not used
-
M 8411
MODBUS configuration request flag
-
FX
3U
-ENET-ADP [ch1]
[M]8404
FX
3U
-ENET-ADP unit ready
-
[M]8405
Not used
-
[M]8406
*4
Time setting execution
-
[M]8407 to [M]8410 Not used
-
M 8411
*4
Execute time setting
-
Positioning
[M]8460 to [M]8463 Not used
-
M 8464
DSZR instruction (FNC150),
ZRN instruction (FNC156)
[Y000] Clear signal device
specification function enabled
D8464
M 8465
DSZR instruction (FNC150),
ZRN instruction (FNC156)
[Y001] Clear signal device
specification function enabled
D8465
[M]8466 to [M]8467 Not used
-
Error detection
[M]8468 to [M]8486 Not used
-
[M]8487
USB communication error
D8487
[M]8488
Not used
-
[M]8489
Special parameter error
D8489