460
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
15 External FX I/O Device – FNC 70 to FNC 79
15.6 FNC 75 – ARWS / Arrow Switch
Program example
1. When changing the timer number and displaying the current value
1) Specifying the timer number using a 3-digit digital switch
2) Setting the constant of the timer using the arrow switches
Explanation of operation
Every time the read/write key is pressed, the read/write LED lights alternately.
• In reading
Set the timer number using the digital switch, and then press the set switch (X003).
• In writing
Set a numeric value using the arrow switches while looking at the seven-segment display unit, and then
press the switch X003.
X013
X010
X011
X012
10
1
1
8 4
Y011
2
10
0
1
8 4
Y010
2
10
2
1
8 4
Y012
2
Y004
Y015
Y007 Y006 Y005
Read
Write
Y003
Read
8
Y000
Y001
Y002
Y014
1
2
4
X001
Set
Write
X004 X003 X002 X000