Mitsubishi FX3U Series Programming Manual page 419

FX /FX Series Programmable Controllers
3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Explanation of function and operation
Four arrow switches are connected to the inputs
BCD decoder is connected to the outputs
1. 16-bit operation (ARWS)
actually stores a 16-bit binary value in the range from 0 to 9999, but the value is expressed in the BCD
D
1
format in the explanation below for convenience.
When the command input is set to ON, ARWS instruction executes the following operation.
Command
input
FNC 75
ARWS
Contents of the display and operation part
Higher
digit
S
+3
1) Specifying the number of digits of the seven-segment display unit having the BCD decoder n
In the explanation below, "n" is set to "4" (up to the 10
2) Operation of the digit selection switches (
- Operation when the lower digit input
Every time the lower digit switch is pressed, the digit specification changes in the way "10
→ 10 0 → 10
- Operation when the higher digit input
Every time the higher digit switch is pressed, the digit specification changes in the way "10
1 → 10 2 → 10
10
3) Operation of the LED for displaying a selected digit (
A specified digit can be displayed by the LED offered by the strobe signals
D
S D D
1 2
Display/operation panel
← Display for
selected digit
Increment
S +1
Lower
digit
S
S
Decrement
S
3
".
3
".
15 External FX I/O Device – FNC 70 to FNC 79
to +3, a seven-segment display unit having the
S S
to +7, and a numeric value is input to
D
2 2
n
2
10
D
2 +7
3
10
D
+6
2
1
10
D
2 +5
0
10
D
+4
2
Seven-segment display unit
Equipped with the latch function so that a
numeric value being set can be seen.
8
D
+3
2
4
D
+2
2
2
D
+1
2
1
D
2
S
+3
S
+2
+2
S
+1
S
Arrow switches
Provided to select a digit and increment or
decrement the numeric value in the selected digit.
3
digit).
+2 and +3)
S S
+2 turns ON
+3 turns ON
S
+4 to
D D
2 2
15.6 FNC 75 – ARWS / Arrow Switch
.
D
1
To outputs in
PLC
To outputs in
PLC
To inputs in
PLC
3 2
→ 10
3
→ 10
+7)
+4 to +7.
D D
2 2
11
12
13
14
15
16
17
18
1
→ 10
19
0
→
20
417