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CHAPTER 5 DEVICES
5
5.
2
I
n
te
rnal Us
er Dev
ices
5.
2.
1
I
nput
(X)
5.2.1
Input (X)
Inputs are the device used to obtain the on and off information from external devices to a CPU module.
(1) Concept of input
One input point is assumed to be a virtual relay Xn in the CPU module. Programs use the normally open or closed
contact of Xn.
The input (X) can also be used for refresh target device (CPU module side) of remote input (RX) in CC-Link.
5.2.2
Output (Y)
The output (Y) is used to output control results in programs to external devices.
1
2
3
Push-button switch
Selector switch
Digital switch
Input (X)
CPU module
PB2
PB1
X0
X1
XF
PB16
Input circuit (external device)
Program
Programmable
controller
Virtual relay
CPU module
Output (Y)
Signal lamp
Digital display
Contactor
Содержание L02CPU
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