DB-9 Serial Interface (P1)

The following figure helps you locate specific DB-9 pins and the table maps signals to pins.

Pin 1

Pin 5

 

Pin 6

Pin 9

 

Pin

Signal

 

 

1

Data Carrier Detect (DCD)

 

 

2

Receive Data (RxD)

 

 

3

Transmit Data (TxD)

 

 

4

Data Terminal Ready (DTR)

 

 

5

Signal/Chassis Ground (GND)

 

 

6

Data Set Ready (DSR)

 

 

7

Request To Send (RTS)

 

 

8

Clear To Send (CTS)

 

 

9

Unused

 

 

Digi One EM Hardware Reference

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Image 15
Digi 90000278_B manual DB-9 Serial Interface P1, Pin Signal