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3

 * 3: When connecting an electromagnetic switch and such for output, connect its normally closed 

contacts in series between XS0 and XS1.

 * 4: Do not connect equipment other than a switch or sensor to each terminal of X0, X1, XS0, and XS1.
 * 5: Common terminals for X0 and X1 differ. Pay attention to the printing on the module at wiring. In the 

external connection diagram, they are represented as COM (X0) and COM (X1).

Extension 
communication 
part

1

EA

2

EB

3

EG

4

EP

Start-up input 
part

1

XS0

*3*4

2

XS1

*3*4

3

Empty

4

Empty

Safety input 
part

1

COM(X0)

*5

2

X0

*4

3

COM(X1)

*5

4

X1

*4

Safety output 
part 1

1

Empty

2

Z00

3

Z10

4

Z20

Safety output 
part 2

1

Empty

2

Z01

3

Z11

4

Z21

COM(X0)

X0

X1

COM(X1)

Switches

Connected to a 

main module 

or 

another extension 

module

Connected to another 

extension module

Connected to a 

main module 

or 

another extension 

module

Connected to another 

extension module

Safety circuit part 

extension cable

Safety circuit part 

extension cable 

or 

safety part terminating 

connector

IN

OUT

Monitor

circuit

Internal 

safety circuit

K0

K1

Start-up 
switch

MC1

MC0

XS0

XS1

EA

EB

EG

EP

Motor

Z00

MC1

MC0

Z01

Z10

Z11

Z20

M

Z21

Safety relay

COM(X0)

COM(X1)