Fnc 51 - Reff / Refresh And Filter Adjust - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
13.2 FNC 51 – REFF / Refresh and Filter Adjust
Outline
The digital input filter time of the inputs X000 to X017
Using this instruction, the status of inputs X000 to X017
for the specified input filter time, and then transferred to the image memory.
1. Instruction format
FNC 51
REFF
2. Set data
Operand Type
n
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
n
: K0 (H0) to K60 (H3C)
Explanation of function and operation
1. 16-bit operation (REFF and REFFP)
16 inputs from X000 to X017
Command
input
FNC 51
REFF
• 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, the REFF instruction is executed in each operation cycle.
• When the command input is OFF, the REFF instruction is not executed, and the input filter of X000 to
*1
X017 uses the set value of D8020 (which is the value used during input processing).
*1. X000 to X007 in the FX
358
Mnemonic
16-bit Instruction
P REFF
3 steps
REFFP
Digital input filter time [K0 to K60 (H0 to H3C) × 1 ms]
Digit Specification
*1
in the image memory are refreshed at the digital input filter time [n × 1 ms].
n
K0 to K60 (Filter constant from 0 to 60 ms)
-16M , FX
3U
13 High Speed Processing – FNC 50 to FNC 59
13.2 FNC 51 – REFF / Refresh and Filter Adjust
*1
can be changed using this instruction or D8020.
*1
can be refreshed at an arbitrary step in the program
Operation Condition
32-bit Instruction
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
-16M .
3UC
Mnemonic Operation Condition
−
−
16-bit binary
Others
Con- Real
Index
stant Number
V Z Modify K H E
Data Type
Charac-
Pointer
ter String
" " P