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14 Applied Instructions (External FX I/O Device)
14.6 ARWS / Arrow Switch
373
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
11
Applied Instructions
(Data Operation)
12
Applied Instructions
(High Speed
Processing)
13
Applied Instructions
(Handy
Instruction)
14
Applied Instructions
(External FX I/O
Device)
15
Applied Instructions
(External Device
(optional device))
16
Applied Instructions
(External Device)
17
Applied Instructions
(Data Transfer 2)
18
Applied Instructions
(Floating Point)
19
Applied Instructions
(Data Operation 2)
20
Applied Instructions
(Positioning
Control)
Content of display and operation unit
1) Digit specification n of 7-segment display unit with BCD decoder
In the following explanation of operation, four digits (10
3
digits) are supposed.
2) Operation of digit select switch ( +2, +3)
- Operation when carry-down switch +2 is ON
Every time the switch is pressed, the digit specification changes in the sequence of 10
3
→ 10
2
→ 10
1
→
10
0
→ 10
3
.
- When carry-over switch +3 is ON
Every time the switch is pressed, the digit specification changes in the sequence of 10
3
→10
0
→ 10
1
→
10
2
→ 10
3
.
3) Operation of LED for selected digit display ( +4 to +7)
The specified digit is displayed by LED by strobe signals +4 to +7.
4) Operation of data change switch of digit unit ( , +1)
Data changes in the digit specified by the "digit select switch."
- Operation when increment input is ON
Every time the switch is pressed, the content of changes in the sequence of 0 → 1 → 2 → ... → 8
→ 9 → 0 → 1.
- Operation when decrement input is ON
Every time the switch is pressed, the content of changes in the sequence of 0 → 9 → 8 → 7 ... →
1 → 0 → 9.
The content can be displayed in 7-segment display unit.
Thus, by a series of operations, desired numeric values can be written into while observing the 7-
segment display unit.
Display, operation panel
1
2
4
8
10
0
10
1
10
2
10
3
Display for
selected digit
+7
+2
+4
+6
+5
+3
+1
7-segment display unit
7-segment display unit with latch for
visual display of numeric value being set
Arrow switch (arrow-mark switch)
A switch for selecting each digit and increasing
or decreasing the numeric value of selected digit.
Strobe output
+2
+3
+1
To PLC
output
To PLC
output
To PLC
input
Decrement
Increment
Carry over Carry down
+1
+2
+3
s
s
s
s
d2
s
d2
d2
d2
d2
d2
d2
d2
s
s
s
Numeric value output
Switch