Delta DVP-EX2 User Manual

3. Instruction Set
3-129
API Mnemonic Operands Function
Controllers
ES2/EX2/
EC5
SS2
SA2
SE
SX2
51 REFF P Refresh and Filter Adjust
Type
OP
Bit Devices Word devices Program Steps
X Y M S K H KnX KnY KnM KnS T C D E F
REFF, REFFP: 3 steps
n
*
*
PULSE
16-bit
32-bit
ES2/EX2
/EC5
SS2
SA2
SE
SX2
ES2/EX2
/EC5
SS2
SA2
SE
SX2
ES2/EX2
/EC5
SS2
SA2
SE
SX2
Operands:
n: Response time (unit: ms)
Explanation:
1. PLC provides digital input filters to avoid interference. The response time (n) of X0 ~ X7 input
filters can be adjusted by REFF instruction. The instruction sets the value specified in n to
D1020 (X0 ~ X7 input filter time) directly. The instruction sets the value specified in n to D1021
(X10 ~ X17response time) for models including 28SS2 V3.42 /28SA2 V3.0 /26SE V1.0 and
later versions.
2. When PLC turns from OFF to ON or the END instruction is reached, the response time is
dictated by the value of D1020.
3. During program execution, the value in D1020 can be changed by using MOV instruction.
4. When using REFF instruction during program execution, the modified response time will be
move to D1020 and refreshed until next program scan..
5. Range of n: = K2 ~ K20.
Program Example:
1. When the power of PLC turns from OFF to ON, the response time of X0~X7 inputs is specified
by the value in D1020.
2. When X20 = ON, REFF K5 instruction is executed, response time changes to 5 ms and takes
affect the next scan.
3. When X20 = OFF, the REFF instruction will not be executed, the response time changes to
20ms and takes affect the next scan.
X20
REFF K5
X0
Y1
X20
REFF K20
X1
Y2
END

Delta DVP-EX2 Specifications

General

Brand	Delta
Model	DVP-EX2
Category	Controller
Language	English