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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
Advanced Function
M 8160
*1
SWAP function of XCH (FNC 17) – – – ––––
M 8161
*1*2
8-bit process mode –
M 8162 High-speed parallel link mode –
[M]8163 Not used – – – – – – –––––
M 8164
*1
FROM (FNC 78), TO (FNC 79) instructions:
Transfer points variable mode
– – – – – D8164 – – –
*3
M 8165
*1
SORT2 (FNC149) instruction:
Sorting in descending order
– – –
*4
– –––––
[M]8166 Not used – – – – – – –––––
M 8167
*1
HKY (FNC 71) instruction:
HEX data handling function
– – – ––––
M 8168
*1
SMOV (FNC 13) instruction:
HEX data handling function
––––
[M]8169 Not used – – – – – – –––––
*1. Cleared when the PLC switches from RUN to STOP.
*2. Applicable to ASC (FNC 76), RS (FNC 80), ASCI (FNC 82), HEX (FNC 83), CCD (FNC 84), and CRC
(FNC188) instructions
*5
.
*3. Available in Ver. 2.00 or later.
*4. Available in Ver. 2.20 or later.
*5. CRC (FNC188) instruction is available only in FX
3U/FX3UC PLCs.
Pulse Catch (Refer to Section 36.7 for details.)
M 8170
*6
Input X000 pulse catch –
M 8171
*6
Input X001 pulse catch –
M 8172
*6
Input X002 pulse catch –
M 8173
*6
Input X003 pulse catch –
M 8174
*6
Input X004 pulse catch –
M 8175
*6
Input X005 pulse catch –
M 8176
*6
Input X006 pulse catch – – – – –––––
M 8177
*6
Input X007 pulse catch – – – – –––––
*6. Cleared when PLC switches from STOP to RUN.
FX3U/FX3UC/FX2N/FX2NC PLCs: EI (FNC 04) instruction is necessary.
FX
3S/FX3G/FX3GC/FX1S/FX1N/FX1NC PLCs: EI (FNC 04) instruction is unnecessary.
Communication Port Channel Setting (Refer to Data Communication Edition for details.)
M 8178 Parallel link channel switch (OFF: ch1/ON: ch2) – – –––––
M 8179
N:N network channel switch
*7
– – –––––
*7. The channel is specified by either setting or not setting M8179 in the setting program.
→ For setting program, Refer to Data Communication Edition
• ch1: M8179 is not set in program
• ch2: M8179 is set in program
Number and
name
Operation and function
Applicable model
FX
3S
FX
3G
FX
3GC
FX
3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
1NC
FX
2N
FX
2NC