DVP-ES2/EX2/SS2/SA2/SX2/SE Operation Manual - Programming
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API Mnemonic Operands Function
86
VRSC P
Volume Scale Read
Controllers
ES2
EX2
SS2 SA2 SX2 SE
Bit Devices Word devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
S
**
D
* * * * * *
VRSC, VRSCP: 5 steps
PULSE 16-bit 32-bit
ES2
EX2
SS2 SA2 SX2 SE
ES2
EX2
SS2 SA2 SX2 SE
ES2
EX2
SS2 SA2 SX2 SE
Operands:
S: Variable resistor number (0~1) D: Destination device for storing scaled value
Explanations:
VRSC instruction reads the scaled value (0~10) of the 2 VRs on PLC and stores the read data in
destination device D as an integer, i.e. if the value is between 2 graduations, the value will be
rounded off.
Program Example 1:
When X0 = ON, VRSC instruction reads the scaled value (0 to10) of VR No. 0 and stores the read
value in device D10.
X0
VRSC K0 D10
Program Example 2:
Apply the VR as digital switch: The graduations 0~10 of VR correspond to M10~M20, therefore only
one of M10 ~M20 will be ON at a time. When M10~M20 is ON, use DECO instruction (API 41) to
decode the scaled value into M10~M25.
1. When X0 = ON, the graduation (0~10) of VR No.1 will be read out and stored in D1.
2. When X1 = ON, DECO instruction will decode the graduation (0~10) into M10~M25.
X0
VRSC K1 D1
X1
DECO D1 M10 K4
M10
M11
M20
ON when VR graduation is 0
ON when VR graduation is 1
ON when VR graduation is 10
