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

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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

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Contents PSE2500-A3 External PoE Power System Technical Support Chapter Contents About This ManualConvention Description Boldface Convention DescriptionEnvironmental Protection Table of Contents Engineering Maintenance and Troubleshooting Description Standard Configuration Architecture and ConfigurationsIntroduction Description Standard Configuration Features 2PSE2500-A3 configuration3PSE2500-A3 configuration System Description OverviewFault Green Red ConditionController 2Front panel of the rectifierMonitoring the system operation status II. Communicate with deamon systemsRS232 Pin Definition RS485 Pin DefinitionDC Distribution Unit AC Distribution UnitPin Definition Safety Safety StatementsPSE2500-A3 External PoE Power System Safety Precautions PSE2500-A3 External PoE Power System Safety Installation and Debugging IntroductionSafety Physical Mounting Installing Rectifiers 1Physical installation2Installing rectifiers Frame GroundingLoad Connections 3Frame groundingPowering on the Device Connecting to AC utility/ AC groundingInitial Start-up PSE2500-A3 External PoE Maintenance and Troubleshooting Engineering Maintenance TroubleshootingLED Indication Controller Rectifier Possible Alarm Display Problems Status Possible solutionController Rectifier Possible Regulatory compliance standardsDiscipline Standards