CPUs, Memory Cards, Memory Submodules, Interface Submodules

Jumper Settings on the TTY Submodule

When the TTY submodule is delivered, the jumpers are set as shown in the following figure. As a rule, therefore, you can use the TTY submodule immediately.

 

 

Front Connector

 

 

25-Pin Sub. D-Type

 

 

 

J3

3

2

1

 

 

J4

J2

J1

 

 

 

1

 

 

 

2

 

 

 

3

 

 

Backplane Connector

Figure 5-21 TTY Submodule: Jumper Settings when Delivered

The polarity of the transmit and receive data is changed over with jumpers J1 and J2:

1 2 3

J1

Transmit data negated

 

Transmit data in normal polarity

J2

Receive data in normal polarity

 

Receive data negated

The 24 V source voltage for generation of the loop current can be allocated with jumper J3:

1 2 3

J3

24

V will be applied from Pin 9 of

 

the sub. D connector

 

24

V will be applied from the

 

backplane connector (internally)

5-108

System Manual

C79000-G8576-C199-06

Page 248
Image 248
Siemens S5-135U/155U appendix Jumper Settings on the TTY Submodule, TTY Submodule Jumper Settings when Delivered