320
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
13 High Speed Processing – FNC 50 to FNC 59
13.2 FNC 51 – REFF / Refresh and Filter Adjust
13.2
FNC 51 – REFF / Refresh and Filter Adjust
Outline
The input filter of the inputs X000 to X017
*1
is the digital type, and its filter time can be changed using this
instruction or D8020.
By this instruction, the information of inputs X000 to X017
*1
can be received in an arbitrary step in the
program at the specified input filter time, and then transferred to the image memory.
1. Instruction format
2. Set data
3. Applicable devices
S
: K0 (H0) to K60 (H3C)
Explanation of function and operation
1. 16-bit operation (REFF and REFFP)
16 inputs from X000 to X017
*1
in the image memory are refreshed at the input digital filter time [n
×
1 ms].
• When the input turns ON "n
×
1 ms" before the instruction is executed, the image memory is set to ON.
When the input turns OFF "n
×
1 ms" before the instruction is executed, the image memory is set to OFF.
• When the command input is ON, REFF instruction is executed in each operation cycle.
• When the command input is OFF, REFF instruction is not executed, and the input filter of X000 to X017
*1
is
set to the set value of D8020 (which is the value in the input processing).
*1.
X000 to X007 in the FX
3U
-16M
Operand Type
Description
Data Type
n
Time data of digital filter [K0 to K60 (H0 to H3C)
×
1 ms]
16-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
n
3 3
S S
P
FNC 51
REFF
−
−
Mnemonic
Operation Condition
16-bit Instruction
3 steps
REFF
REFFP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
FNC 51
REFF
n
K0 to K60 (Filter constant from 0 to 60 ms)
Command
input