Eaton ELC-PB, Programming Manual

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3 . I n s t r u c t i o n S e t
M N050 03003E F or mo re infor ma tio n vi sit:
w w w. e a t o n . c o m
3-251
API Mnemonic Operands Function
85 VRRD P
S, D
Volume Read
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
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
S
: Variable resistor number (0~1)
D
: Destination for storing the values
Description:
1. VRRD instruction is used to read the two variable resistors of ELC-PC/PH/PV models. The
read value will be scaled to a decimal range of 0 to 255 and stored in destination
D
.
2. For information on flags: M1178 and M1179 see the Note below.
Program Example:
Variable resistor values are used in this example as
set points for two timers. The VRRD instructions read
the VR values as decimal values from 0-255. Since
the timers are 100ms time-base timers, the range for
the VR values as presets for these timers are 0-25.5
seconds.
M1000
VRRD D100
X20
TMR D100 T0
T0
Y0
X21
TMR D101 T1
T1
Y1
END
K 0
VRRD D101 K 1
Note:
1. VR means VARIABLE RESISTOR.
2. ELC-PC/PH/PV models, the Variable Resistor. values are from the special D registers below
and the M bits are used to enable each VR.
Device Function
M1178 Start volume VR0
M1179 Start volume VR1
D1178 VR0 value
D1179 VR1value