Mitsubishi Electric MELSEC FX3U Programming Manual page 443

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
3. Number of occupied device
1) Ten bit devices are occupied from
Because these devices are occupied even if the ten keys are not connected, they cannot be used for any
other purpose.
2) Eleven bit devices are occupied from
Make sure that these devices are not used in other controls for the machine.
- to
D D
2
- +10: Is ON while either one among "0" to "9" keys is pressed (key sensing output).
D
2
4. Limitation in the number the instruction
TKY or DTKY instruction can be used only once in a program.
When TKY and/or DTKY instruction should be used two or more times, use the indexing (V, Z) function.
Program example
In the program example shown below, the input X000 is set as the head bit device, and the ten keys "0" to "9"
are connected.
1. Program
X030
FNC 70
TKY
2. Connection diagram
This connection diagram shows an example of FX
For wiring details, refer to the following manual.
Ten keys →
24V 0V S/S X000 X001 X002 X003
S
D
+9: Turn ON or OFF according to input of the ten keys "0" to "9".
2
S D D
1 2
X000 D0 M10
0 1 2 3 4
X004
15 External FX I/O Device – FNC 70 to FNC 79
for connecting the ten keys.
for outputting the key pressing information.
2
PLC (sink input).
3U
5 6 7 8 9
X005 X006 X007 X010 X011
PLC
15.1 FNC 70 – TKY / Ten Key Input
→ FX
Hardware Edition
3U
441
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