Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 354)

7 Application Instructions API 50-99
D V P - P L C A P P L I C AT I O N M A N U A L 7-70
API Mnemonic Operands Function
75 ARWS Arrow Switch
Controllers
ES/EX/SS SA/SX/SC EH/SV
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
1
* * * * *
D
2
*
n * *
ARWS: 9 steps
PULSE 16-bit 32-bit
ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV ES EX SS SA SX SC EH SV
Operands:
S : Start device for key input D
1
: Device to be displayed in 7-segment display D
2
: Start device for 7-segment
display scan output n: Polarity setting of output signal and scan signal
Explanations:
1. S will occupy 4 consecutive points.
2. Range of n : 0 ~ 3. See remarks of API 74 SEGL for more details.
3. There no limitation on the times of using this instruction in the program. However, only one instruction is allowed
to be executed at a time.
4. S and D
2
of SA series MPU do not support E, F index register modification and can only designate the devices
whose last digit is 0 (e.g. Y0, Y10….)
5. See the specifications of each model for their range of use.
6. The output points designated by this instruction shall be transistor output.
7. When using this instruction, please fix the scan time, or place this instruction in the time interruption subroutine
(I6□□ ~ I8□□).
Program Example:
1. When this instruction is executed, X20 is defined as down key, X21 is defined as up key, X22 is defined as right
key and X23 is defined as left key. The keys are used for setting up and displaying external set values. The set
values (range: 0 ~ 9,999) are stored in D20.
2. When X10 = On, digit 10 3 will be the valid digit for setup. If you press the left key at this time, the valid digit will
circulate as 10 3 → 10 0 → 10 1 → 10 2 → 10 3 → 10 0 .
3. If you press the right key at this time, the valid digit will circulate as 10 3 → 10 2 → 10 1 → 10 0 → 10 3 → 10 2 .
During the circulation, the digit indicators connected Y24 ~ Y27 will also be On interchangeably following the
circulation.
4. If you press the up key at this time, the valid digit will change as 0 → 1 → 2 … → 8 → 9 → 0 →1. If you
press the down key, the valid digit will change as 0 → 9 → 8 … → 1 → 0 → 9. The changed value will also
be displayed in the 7-segment display.
X10
ARWS X20 D20 Y20 K0