3Com PSE2500-A3 user manual RS232 Pin Definition, RS485 Pin Definition

Models: PSE2500-A3

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User Manual

 

PSE2500-A3 External PoE

 

Power System

Chapter 2 System Description

command the operation through equipment which has RS232 or RS485 interface and can support this protocol.

There is one RS485 port and one RS232 interface on the rear panel.

Their definitions are as follows:

Table 2-2 RS232

Pin

Definition

1

Not used

 

 

2

Receive

 

 

3

Transmit

 

 

4

Not used

 

 

5

Ground

 

 

6

Not used

 

 

7

Not used

 

 

8

Not used

 

 

9

Not used

 

 

Table 2-3 RS485

 

 

 

Pin

Definition

1

Transmit, +

 

 

2

Transmit, -

 

 

3

Receive, +

 

 

2-5

Page 16
Image 16
3Com PSE2500-A3 user manual RS232 Pin Definition, RS485 Pin Definition