Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Vrrd, Volume Read

3. Instruction Set

API	Mnemonic		Operands	Function		Controllers
85	VRRD	P		Volume Read	ES2	SS2 SA2 SX2	SE
					EX2
Type	Bit Devices			Word devices		Program Steps

OP

X

Y

M

S K

H

KnX

KnY

KnM

KnS

T

C

D

E

F

VRRD, VRRDP: 5 steps

S

*

*

D

*

*

*

*

*

*

16-bit

PULSE

32-bit

ES2/

SS2

SA2

SX2

SE

ES2/

SS2

SA2

SX2

SE

ES2/

SS2

SA2

SX2

SE

EX2

EX2

EX2

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.

X0

VRRD K0 D0

X1

TMR T0 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

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