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DEVICE EXPLANATION

9.2 Internal User Devices

9.2.1 Input (X)

9 - 5

Device Explanation

CPU Module Processing

Time

Procedure for Writing

Program to CPU ModuleAppendicesIndex

9.2.1 Input (X)

(1) Definition

Inputs transmit commands or data to the CPU module from an external device such

as push-button switches, selector switches, limit switches, digital switches.

(2) Concept of input (X)

If the input point is the Xn virtual relay inside the CPU module, the program uses the

Xn's N/O contact or N/C contact.

(3) Number of used N/O and N/C contacts

There are no restrictions on the number of Xn N/O contacts and N/C contacts used in

a program, provided the program capacity is not exceeded.

Diagram 9.2 Commands from external devices to CPU module

Diagram 9.3 Inputs(X)

Diagram 9.4 Input(X) Used in Program

1 2 3

Push-button switch

Selector switch

Digital switch

Input (X)

Sequence

operation

LS2

PB1

PB8

X108

X102

X100

Virtual relay

ProgramInput ladder (external device)

X108

X100

X102

Programmable

controlle

X100

Y101

X100

Y100

Y101

Y102

X102

X104

No restrictions on the

quantity used.

1 2 ... 156 157 158 159 160 161 162 163 164 165 166 ... 233 234

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