Inovance H3U Series - Page 328

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4
4 Instructions 4.12.4 Other Peripheral Instructions
ARWS: Arrow switch
◆
Overview
The ARWS instruction enables easy editing of parameters stored in registers. X ports are used to provide
edit keys, and Y ports are used to drive 4-digit 7-segment LED displays.
ARWS S D1 D2 n
Arrow switch Applicable model:
H3U
S
Input port
head address
Head address of four consecutive units that store key inputs
16-bit instruction
(9 steps)
ARWS:
Continuous
execution
D1
Data storage
address
Variable that is displayed and modied (Only one 16-bit
variable is displayed.)
D2
Output port
head address
Head address of eight consecutive Y ports used for 7-segment
LED display driving
n
Related
setting
Signal logic setting. For details, see the description of n in
“SEGL: Seven segment with latch” on Page 320.
◆
Operands
Operand
Bit Element Word Element
System·User System·User Bit Designation Indexed Address Constant
Real
Number
S X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
D1 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
D2 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
S2 X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
Note: The elements in gray background are supported.
◆
Function
Parameters stored in registers can be edited easily by using X ports to provide edit keys and Y ports to
drive 4-digit 7-segment LED displays.
Example:
X20
〔ARWS X10 D0 Y0 K2〕
S D1
n
D2
The following gure shows the hardware wiring diagram. The PLC is of the transistor output type.
1
2
4
8
VDD
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X11
X10
X12
X13
COM1
COM2
Back
key
Increment
key
Reduction
key
Latched 7-segment
LED display for decoding
Forward
key
Thousands
place
Hundreds
place
Tens
place
Ones
place
Operation:
1) The 7-segment LED display shown in the gure displays the value in D0, in the range 0 to 9999. Press
X10 to X13 to modify the value.
2) When X20 = ON, the cursor is located at the thousands place. Each time the back key (X12) is
pressed, the designated digit is switched through thousands place -> hundreds place -> tens place