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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
13 High-Speed Processing – FNC 50 to FNC 59
13.1 FNC 50 – REF / Refresh
11
FNC30-FNC39
Rotation and
Shift
12
FNC40-FNC49
Data Operation
13
FNC50-FNC59
High-Speed
Processing
14
FMC60-FNC69
Handy
Instruction
15
FNC70-FNC79
External FX I/O
Device
16
FNC80-FNC89
External FX
Device
17
FNC100-FNC109
Data
Transfer 2
18
FNC110-FNC139
Floating Point
19
FNC140-FNC149
Data
Operation 2
20
FNC150-FNC159
Positioning
Control
13.1 FNC 50 – REF / Refresh
Outline
This instruction immediately outputs the latest input (X) information or the current output (Y) operation result in the
middle of a sequence program.
1. Instruction format
2. Set data
3. Applicable devices
S1: X000, X010 or X020: Up to the final input number (whose least significant digit number is "0")
S2: Y000, Y010 or Y020: Up to the final output number (whose least significant digit number is "0")
S3: FX
3S PLC: K8 (H8) or K16 (H10)
FX
3G/FX3GC PLCs: K8 (H8) or K16 (H10): Up to K128 (H80) (which is a multiple of 8)
FX
3U/FX3UC PLCs: K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)
Operand Type Description Data Type
Head bit device (X or Y) number to be refreshed Bit
n Number of bit devices to be refreshed 16-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index Constant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
VZModify K H E "
"P
S1 S2
n
S3 S3
P
FNC 50
REF
−
−
Mnemonic Operation Condition
16-bit Instruction
5 steps
REF
REFP
Mnemonic Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
D
D