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Yaskawa MP940 User Manual

Page 194

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System Startup

5.3.3 Serial Port Connector Pin Arrangements and I/O Circuits

5-22

Note: For the port 2 interface, the terminating resistance activated by con-

necting 2 to 11 and 4 to 7.

TX/RX

TX/RX

TX/RX

1

TX(+)

2

TX(-)

11

TXR

3

RX(+)

4

RX(-)

7

RXR

14

GND

MP940 PORT2

FG

TX

-)

TX

+)

RX

-)

RX

+)

9

8

4

3

GND

GND

GND

TX

-)

TX

+)

2

1

RX

-)

RX

+)

6

10

Connector

shell

Connector

shell

Connector

shell

Shield

120-

terminating

resistance

An example when the

MP940 Module is

connected in the mid-

dle of the connection

is shown below.