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12 Applied Instructions (High Speed Processing)

258

FXCPU Structured Programming Manual

[Basic & Applied Instruction]

12.1 REF / Refresh

12.1.1 What should be understood before using the REF instruction

1. Changing the input filter

The input filter value is determined by the contents of D8020 (initial value: 10 ms).
Use the MOV instruction, etc. to adjust the value in D8020, which represents the input filter value.

→ For details, refer to "FX Structured Programming Manual (Device & Common)."

2. Output response time

After the REF instruction is executed, the output (Y) sets the output signal to ON after the response time
shown below.

→ For details, refer to the respective PLC Hardware Edition manuals.

1) Relay output type

The output contact is activated after the response time of the output relay.
- Y000 and higher: Approximately 10 ms

2) Transistor output type

a) For FX

PLC

Y000, Y001, Y002: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y003 and higher: 0.2 ms or less (load current = 200 mA, 24 V DC)

b) For FX

3UC

(D, DSS) PLC

Y000, Y001, Y002: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y003 and higher: 0.2 ms or less (load current = 100 mA, 24 V DC)

c) For FX

3UC

-32MT-LT (-2) PLC

Y000, Y001, Y002, Y003: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y004 and higher: 0.2 ms or less (load current = 100 mA, 24 V DC)

d) For FX

PLC (14-point, 24-point types) and FX

3GC

PLCs

Y000, Y001: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y002 and higher: 0.2 ms or less (load current = 200 mA, 24 V DC)

e) For FX

(40-point, 60-point types)

Y000, Y001, Y002: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y003 and higher: 0.2 ms or less (load current = 200 mA, 24 V DC)

f) For FX

3GC

PLC

Y000, Y001: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y002 and higher: 0.2 ms or less (load current = 100 mA, 24 V DC)

g) For FX

PLC

Y000, Y001: 5

s or less (load current = 10 mA or more, 5 to 24 V DC)

Y002 and higher: 0.2 ms or less (load current = 200 mA, 24 V DC)

h) For FX

, FX

1NC

, FX

and FX

2NC

PLCs

Y000, Y001: 15

s to 30

s or less

Y002 and higher: 0.2 ms or less

i) For FX

, FX

and FX

PLCs

Y000 and higher: 0.2 ms or less

3. When using the REF instruction between FOR and NEXT instructions or between a label

(with a lower step number) and CJ instruction (with a higher step number)

Inputs and outputs can be refreshed in a routine program even when the input information or immediate
output is required in the middle of a routine program during control.

4. When using the input interrupt (I) function

When executing interrupt processing accompanied by I/O operations, I/O refresh can be executed in the
interrupt routine to receive the latest input (X) information and give the immediate output (Y) of the operation
result so that dispersion caused by the operation time is improved.