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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
Memory Information
[M]8101
Not used
– – – – –––––
[M]8102
– – – – –––––
[M]8103
– – – – –––––
[M]8104 ON when function extension memory is installed.
– – –
D8104
D8105
––
3
*1
–
3
*1
[M]8105 ON when writing to memory cassette 3 3 3 – –––– –
[M]8106 Not used
– – – – –––––
[M]8107 Device comment registration check
– 3 3 D8107 – – – – –
[M]8108 Not used
– – – – –––––
*1. Available in Ver. 3.00 or later.
Output Refresh Error (Refer to Chapter 38 for details.)
[M]8109 Output refresh error
3 3 3 D8109 – – 3 – 3
[M]8110
Not used
– – – – –––––
[M]8111
– – – – –––––
Expansion Board [Dedicated to FX1S and FX1N]
M 8112
FX
1N-4EX-BD: BX0 input – – ––33–––
FX
1N-2AD-BD: ch1 input mode change – – – D8112 33–––
M 8113
FX
1N-4EX-BD: BX1 input – – ––33–––
FX
1N-2AD-BD: ch2 input mode change – – – D8113 33–––
M 8114
FX
1N-4EX-BD: BX2 input – – ––33–––
FX
1N-1DA-BD: output mode change – – – D8114 33–––
M 8115 FX1N-4EX-BD: BX3 input – – ––33–––
M 8116 FX
1N-2EYT-BD: BY0 output – – ––33–––
M 8117 FX
1N-2EYT-BD: BY1 output – – ––33–––
[M]8118
Not used
– – – – –––––
[M]8119 – – – – –––– –
RS (FNC 80) and Computer Link [ch1] (Refer to Data Communication Edition for details.)
[M]8120 Not used
– – – – –––––
[M]8121
*2
RS (FNC 80) instruction: Send wait flag 3 3 3 – 33333
M 8122
*2
RS (FNC 80) instruction: Send request 3 3 3 D8122 33333
M 8123
*2
RS (FNC 80) instruction: Receive complete flag 3 3 3 D8123 3333 3
[M]8124 RS (FNC 80) instruction: Carrier detection flag
3 3 3 – 33333
[M]8125 Not used
– – – – –––––
[M]8126 Computer link [ch1] Global ON 3 3 3
D8127
D8128
D8129
3333 3
[M]8127 Computer link [ch1] On-demand send processing
3 3 3 ––3 – 3
M 8128 Computer link [ch1] On-demand error flag
3 3 3 3333 3
M 8129
Computer link [ch1] On-demand Word / Byte
changeover
RS (FNC 80) instruction: Time-out check flag
3 3 3 3333 3
*2. Cleared when PLC switches from RUN to STOP or RS instruction is OFF.
Number and name Operation and function
Applicable model
FX
3G FX3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
2N
FX
1NC
FX
2NC