B&B Electronics PES1A manual Appendix F Power over Ethernet PoE, Power over Ethernet Alternative a

Page 59

Appendix F: Power over Ethernet (PoE)

Power over Ethernet is a technique (defined by the IEEE802.3af standard) for providing power to Ethernet enabled devices over standard Category 5e cabling. Two techniques (Alternative A and Alternative B) are defined by the standard and supported by the PES1A/PESV1A.

Alternative A implements a simplex, or ‘phantom feeding’ method for delivering power to the end device. Power is carried on the same conductors as data. Cabling for standard 10BaseT and 100BaseTX Ethernet (typically Category 5 cable with RJ-45 connectors) uses two data/signal pairs. The power sourcing equipment (PSE) applies positive DC voltage (simplexed) to pins 3 and 6. Negative voltage is applied to pins 1 and 2. The powered device (PD) derives the power from these lines.

Alternative B carries power over spare wire pairs in the cable. The power sourcing equipment applies positive voltage to pins 4 and 5. Negative voltage is applied to pins 7 and 8.

Operating voltage is typically 48 volts but may vary from 44 volts to 57 volts.

Device with Power Source

Powered End Station

Data Pair

Power

Sourcing

Equipment

(PSE)

3	3
6	6
Negative (-)	Negative (-)
Positive(+)	Positive(+)

Data Pair

Powered

Device

(PD)

1

1

Data Pair

Data Pair

2

2

Figure 23. Power over Ethernet Alternative A

Manual Documentation Number: PES1A/PESV1A-2907m

49

B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com

B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com

Image 59

Contents Models PES1A, PESV1A Mini POE Ethernet to RS-232 ConvertersManual Documentation Number PES1A/PESV1A-2907m International Headquarters Page Manual Documentation Number PES1A/PESV1A-2907m Page Table of Contents Using the WEB Configuration and Management Using Realport Manual Documentation Number PES1A/PESV1A-2907m Introduction FeaturesVirtual COM Port Communication ModesDirect IP Other Communications Modes Paired ModeIntroduction Hardware Overview Package ChecklistLink Integrity LED Yellow Indicators, Switches and ConnectorsReset Switch Voltage Output Selector Switch PESV1A onlyOutput Power Connector PESV1A only Ethernet Port ConnectorSerial Port Connector Power ConnectorPower over Ethernet PoE Connecting the HardwareConnection using Midspan Power Source Configuration ConnectionsHardware Overview Getting Started Set up the HardwareConfigure the PES1A/PESV1A Using the Discovery Software Configuring the IP AddressConfiguring the IP Address Logging Out Using the Web Configuration and Management InterfaceLogging Configuring Network Settings Using Tutorial and HelpNetwork Services Settings IP SettingsPort Profile Settings Configuring the Serial PortAdvanced Network Settings RealPort TCP Sockets UDP Sockets UDP Client Settings Serial Bridge Basic Serial SettingsAlarm Conditions Configuring Alarms and NotificationAdvanced Serial Settings Alarm Notification SettingsAlarm Destinations Using the Web Configuration and Management Interface Managing Users and Permissions System SettingsUsing Remote Management ManagingAdding New Users Changing the Root Username and PasswordConfiguring User Access and Permissions Connections Managing Serial Ports and ConnectionsSerial Ports Managing the PES1A/PESV1A Factory Default Settings Using Administrative FeaturesBackup/Restore Update FirmwareSerial System InformationGeneral Network Serial Port DiagnosticsReboot Configuring the Serial Port for RealPort Using RealPortConfiguring the IP Address Removing a Virtual COM Port using RealPort Adding a Virtual COM Port using RealPortUpdating RealPort Using RealPort Dhcp Appendix a Default Configuration SettingsDefault Configuration Settings Manual CD-ROM disc Appendix B Product SpecificationsData Bits Dimensional Diagram of the PES1A Appendix C Dimensional DiagramsDimensional Diagrams DTE Appendix D RS-232 ConnectionsRS-232 Connections Appendix E Network Connections RJ-45 Pin Signal Wire Color PoENetwork Connections Power over Ethernet Alternative a Appendix F Power over Ethernet PoEPower over Ethernet Alternative B

Related manuals

Manual 31 pages 34.64 Kb