Delta DVP-ES2 - Manual (Page 353)

3 . I n s t r u c t i o n S e t
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API Mnemonic Operands Function
85 VRRD P Volume 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 * * * * * *
VRRD, VRRDP: 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 read value
Explanations:
1. VRRD instruction is used to read the two variable resistors on PLC. The read value will be
converted as 0 ~ 255 and stored in destination D.
2. If the VR volume is used as the set value of timer, the user only has to turn the VR knob and
the set value of timer can be adjusted. When a value bigger than 255 is required, plus D with a
certain constant.
3. Flags: M1178 and M1179. (See the Note)
Program Example:
1. When X0 = ON, the value of VR No.0 will be read out, converted into 8-bit BIN value (0~255),
and stored in D0.
2. When X1 = ON, the timer which applies D0 as the set value will start timing.
X1
TMR T0 D0
X0
VRRD K0 D0
Points to Note:
1. VR denotes Variable Resistor.
2. SX2 supports built-in 2 points of VR knobs which can be used with special D and M.
Device Function
M1178 Enable knob VR0
M1179 Enable knob VR1
D1178 VR0 value
D1179 VR1 value