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Appendix A: Special Device List
194
FX3S Series Programmable Controllers
User's Manual - Hardware Edition
Appendix A-2 Special Data Register (D8000 to D8511)
*1. Cleared when PLC power supply from OFF to ON.
*2. Cleared when PLC switches from STOP to RUN.
*3. “4” is displayed even when the memory capacity is
set to 16 K steps in the parameter setting.
*4. Latch device.
*5. Cleared when PLC power supply from OFF to ON.
*6. Cleared when PLC switches from STOP to RUN.
*7. Supported in Ver. 1.20 or later.
*8. Details of each access restriction
*9. Accesses are restricted by the keyword setting
status.
*10. "**" indicates areas used by the system.
Number and name Content of register
Correspond-
ing special
device
Error detection (Refer to Subsection 14.6.3 for details)
[D]8060 Not used -
[D]8061 Error code for PLC hardware error M8061
[D]8062
*1
Error code for PC/PP
communication error
M8062
[D]8063
*1
Error code for serial communication
error [ch1]
M8063
[D]8064 Error code for parameter error M8064
[D]8065 Error code for syntax error M8065
[D]8066 Error code for circuit error M8066
[D]8067
*2
Error code for operation error M8067
D 8068
Operation error step number latched
M8068
[D]8069
*2
Error step number of M8065 to
M8067
M8065 to
M8067
Parallel link
[D]8070
Parallel link error time-out check
time: 500 ms
-
[D]8071 to [D]8073 Not used -
Memory information
[D]8100 Not used -
[D]8101
PLC type and
system version
-
[D]8102
Memory capacity
2......2 K steps
4......4 K steps
*3
-
[D]8103 to [D]8109 Not used -
RS instruction (FNC 80) and computer link [ch1]
D 8120
*4
RS instruction (FNC 80) and
computer link [ch1]
Communication format setting
-
D 8121
*4
Computer link [ch1]
Station number setting
-
[D]8122
*2
RS instruction (FNC 80):
Remaining points of transmit data
M8122
[D]8123
*2
RS instruction (FNC 80):
Monitoring receive data points
M8123
D 8124
RS instruction (FNC 80):
Header <Default: STX>
-
D 8125
RS instruction (FNC 80):
Terminator <Default: ETX>
-
[D]8126 Not used -
D 8127
Computer link [ch1]
Specification of on-demand head
device register
M8126 to
M8129
D 8128
Computer link [ch1]
Specification of on-demand data
length register
D 8129
*4
RS instruction (FNC 80), computer
link [ch1]
Time-out time setting
2 8 1 0 0
FX
3S Series
Version 1.00
Number and name Content of register
Correspond-
ing special
device
Positioning
[D]8130 to [D]8135 Not used -
D 8136 Lower
PLSY instruction (FNC 57),
PLSR instruction (FNC 59):
Accumulated total number
of pulses output to Y000
and Y001
-
D 8137 Upper
[D]8138 to [D]8139 Not used -
D 8140 Lower
Accumulated number of
pulses output to Y000 for
PLSY instruction (FNC 57)
and PLSR instruction (FNC
59)
-
D 8141 Upper
D 8142 Lower
Accumulated number of
pulses output to Y001 for
PLSY instruction (FNC 57)
and PLSR instruction (FNC
59)
-
D 8143 Upper
[D]8144 to [D]8149 Not used -
Inverter communication function
D 8150
*5
Response wait time of inverter
communication [ch1]
-
[D]8151
Step number of instruction during
inverter communication [ch1]
Default: -1
M8151
[D]8152
*6
Error code for inverter
communication [ch1]
M8152
[D]8153
*6
Inverter communication error step
number latched [ch1]
Default: -1
M8153
[D]8154 to [D]8157 Not used -
Display module (FX3S-5DM) function
D 8158
*7
Control device (D) for display
module
Default: -1
-
D 8159
*7
Control device (M) for display
module
Default: -1
-
Advanced function
[D]8160 to [D]8168 Not used -
[D]8169
Access restriction status
*8
-
Present
value
Access restriction
status
Program
Monitor-
ing
Present
value
change
Read Write
H**00
*10
2nd keyword is not
set
*9
*9
*9
*9
H**10
*10
Write protection -
H**11
*10
Read/write
protection
--
H**12
*10
All online operation
protection
-- - -
H**20
*10
Keyword cancel