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Appendix A: Special Device List
188
FX3S Series Programmable Controllers
User's Manual - Hardware Edition
Appendix A-1 Special Auxiliary Relay (M8000 to M8511)
*1. Cleared when PLC switches from RUN to STOP.
*2. Executed at END instruction.
*3. Cleared when PLC power supply from OFF to ON.
*4. Cleared when PLC switches from STOP to RUN.
*5. Supported in Ver. 1.10 or later.
Number and name Operation and function
Correspond-
ing special
device
Step ladder
M 8040
Transfer disable
While M8040 is turned ON, transfer
between states is disabled.
-
[M]8041
*1
Transfer start
Transfer from initial state is
enabled in automatic operation
mode.
-
[M]8042
Start pulse
Pulse output is given in response to
a start input.
-
M 8043
*1
Zero return
complete
Set this in the last state of zero
return mode.
-
M 8044
*1
Zero point condition
Set this when machine zero return
is detected.
-
M 8045
All output reset
disable
Disables the 'all output reset'
function when the operation mode is
changed.
-
[M]8046
*2
STL state ON
ON when M8047 is ON and either of
S0 to S255 is active.
M8047
M 8047
*2
STL monitoring
enable
D8040 to D8047 are enabled when
M8047 is ON.
D8040 to
D8047
[M]8048 to [M]8049 Not used -
Interrupt disable
M 8050
*1
(Input interrupt)
I00 disable
• If an input interrupt or timer
interrupt occurs while a special
auxiliary relay for that interrupt
(M8050 to M8058) is ON, the
interrupt will not operate.
For example, turning M8050 ON
disables the I00 interrupt;
hence, the interrupt routine is
not processed even in an
allowable program area.
• If an input interrupt or timer
interrupt occurs while a special
auxiliary relay for that interrupt
(M8050 to M8058) is OFF,
a) The interrupt will be
accepted.
b) The interrupt routine will be
processed promptly if it is
permitted by the EI (FNC
04) instruction. However, if
the DI (FNC 05) instruction
disables interrupts, the
interrupt program will not
be processed until EI (FNC
04) permits the interrupts.
-
M 8051
*1
(Input interrupt)
I10 disable
-
M 8052
*1
(Input interrupt)
I20 disable
-
M 8053
*1
(Input interrupt)
I30 disable
-
M 8054
*1
(Input interrupt)
I40 disable
-
M 8055
*1
(Input interrupt)
I50 disable
-
M 8056
*1
(Timer interrupt)
I6 disable
-
M 8057
*1
(Timer interrupt)
I7 disable
-
M 8058
*1
(Timer interrupt)
I8 disable
-
M 8059 Not used -
Number and name Operation and function
Correspond-
ing special
device
Error detection
[M]8060 Not used -
[M]8061 PLC hardware error D8061
[M]8062 PLC/PP communication error D8062
[M]8063
*3
Serial communication error 1 D8063
[M]8064 Parameter error D8064
[M]8065 Syntax error
D8065
D8069
D8314
D8315
[M]8066 Circuit error
D8066
D8069
D8314
D8315
[M]8067
*4
Operation error
D8067
D8069
D8314
D8315
M 8068 Operation error latch
D8068
D8312
D8313
M 8069 Not used -
Parallel link
M 8070
*4
Parallel link
Set M8070 when using master
station.
-
M 8071
*4
Parallel link
Set M8071 when using slave
station.
-
[M]8072
Parallel link
ON when operating
-
[M]8073
Parallel link
ON when M8070 or M8071
setting is incorrect
-
Memory information
[M]8101 to [M]8104 Not used -
[M]8105 ON during writing in RUN mode -
[M]8106 to [M]8108 Not used -
FX3G-4EX-BD
[M]8112
*5
BX0 input -
[M]8113
*5
BX1 input -
[M]8114
*5
BX2 input -
[M]8115
*5
BX3 input -
FX3G-2EYT-BD
M 8116
*5
BY0 output -
M 8117
*5
BY1 output -