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Appendix A: Special Device List
398
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
Appendix A-2 Special Data Register (D8000 to D8511)
*1. Latch device
*2. Cleared when PLC switches from RUN to STOP.
*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.
*6. Access restriction status
*7. Accesses are restricted by the keyword setting status.
*8. "**" indicates areas used by the system.
Number and
name
Content of register
Correspond-
ing special
device
Output Refresh Error
[D]8109
Y number where output refresh
error occurs
M8109
[D]8110 to [D]8119 Not used -
RS (FNC 80) and Computer Link [ch1]
D 8120
*1
RS (FNC 80) instruction and
computer link [ch1]
Communication format setting
-
D 8121
*1
Computer link [ch1]
Station number setting
-
[D]8122
*2
RS (FNC 80) instruction:
Remaining points of transmit data
M8122
[D]8123
*2
RS (FNC 80) instruction:
Monitoring receive data points
M8123
D 8124
RS (FNC 80) instruction:
Header <Default: STX>
-
D 8125
RS (FNC 80) instruction:
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
*1
RS (FNC 80) instruction, computer
link [ch1]
Time-out time setting
Positioning
[D]8130 to [D]8135 Not used -
D 8136 Lower
PLSY (FNC 57), PLSR (FNC
59) instructions:
Accumulated total number of
pulses output to Y000 and
Y001
-
D 8137 Upper -
[D]8138
Not used
-
[D]8139 -
D 8140 Lower
Accumulated number of
pulses output to Y000 for
PLSY (FNC 57) and PLSR
(FNC 59) instructions
-
D 8141 Upper -
D 8142 Lower
Accumulated number of
pulses output to Y001 for
PLSY (FNC 57) and PLSR
(FNC 59) instructions
-
D 8143 Upper
[D]8144
Not used
-
D 8145 -
D 8146 -
D 8147 -
D 8148 -
[D]8149 -
Number and
name
Content of register
Correspond-
ing special
device
Inverter Communication Function
D 8150
*3*5
Response wait time of inverter
communication [ch1]
-
[D]8151
*5
Step number of instruction during
inverter communication [ch1]
Default: -1
M8151
[D]8152
*4*5
Error code for inverter
communication [ch1]
M8152
[D]8153
*3*5
Inverter communication error step
number latched [ch1]
Default: -1
M8153
[D]8154 Not used -
D 8155
*3*5
Response wait time of inverter
communication [ch2]
-
[D]8156
*5
Step number of instruction during
inverter communication [ch2]
Default: -1
M8156
[D]8157
*4*5
Error code for inverter
communication [ch2]
M8157
[D]8158
*4*5
Inverter communication error step
number latched [ch2]
Default: -1
M8158
[D]8159 Not used -
Advanced Function
[D]8160
Not used
-
[D]8161 -
[D]8162 -
[D]8163 -
D 8164 -
[D]8165 -
[D]8166 -
[D]8167 -
[D]8168 -
[D]8169
Access restriction status
*6
-
Present
value
Access restriction
status
Program
Monitor
-ing
Present
value
change
Read Write
H**00
*8
2nd keyword is not set
*7 *7 *7 *7
H**10
*8
Write protection -
H**11
*8
Read / write protection - -
H**12
*8
All online operation
protection
-- - -
H**20
*8
Keyword cancel