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FX3G/FX3U/FX3UC Series Programmable Controllers
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
Explanation of function and operation
1. 16-bit operation (REF and REFP)
1) When refreshing outputs (Y)
"n" points are refreshed from the specified output device . ("n" must be a multiple of 8.)
- When this instruction is executed, the output latch memory is refreshed to the output status in the specified
range.
2) When refreshing inputs (X)
"n" points are refreshed from the specified input device . ("n" must be a multiple of 8.)
- If the input information is turned ON approximately 10 ms (response delay time of the input filter) before the
instruction is executed, the input image memory turns ON when the instruction is executed.
- In X000 to X017
*1
, the response delay time of the input filter can be changed.
*1 X000 to X007 in the FX
3G, FX3U-16M and FX3UC-16M.
→ For details, refer to "13.1.1 What should be understood before using the REF instruction".
D
Head
device
number
Number
of points
K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)
Y000, Y010 or Y020: Up to the final output number
(whose least significant digit number is "0")
FNC 50
REF
nD
Command
input
ON
ON
Image memory output (Y)
REF instruction (executed)
Output refresh
REF instruction + END processing
END instruction
processing (output)
ON
Improved response
delay time
Only END processing
Improved response
delay time
D
Head
device
number
Number
of points
K8 (H8) or K16 (H10): Up to K256 (H100) (which is a multiple of 8)
X000, X010 or X020: Up to the final input number
(whose least significant digit number is "0")
FNC 50
REF
nD
Command
input