X20HB2881 by B & R Automation

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The X20HB2881 is a hub expansion module featuring half-duplex communication and auto-mdi/mdix capability. Designed by B & R Automation in their X20 Fieldbus Input Output Series, this module offers a transfer rate of 100 Mbit/s alongside multimode fiber compatibility. It includes electrical isolation, diagnostic capability via LED, and consumes 2.3 W of power.

Technical Specifications

Status Indicators
Module status, bus function

Diagnostics (bus Function)
Yes, using status LED

Power Consumption
2.3 W (Rev. <E0: 2.8 W)

Electrical Isolation (fieldbus - Supply)
Yes

Type
Hub expansion module

Design
2x duplex LC female

Transfer Rate
100 Mbit/s

Transfer (physical Layer)
100BASE-FX

Half-duplex
Yes

Full-duplex
No

Autonegotiation
No

Auto-mdi / Mdix
No

Hub Propagation Delay
0.96 to 1 us

Wave Length
1300 nm

Cable Fiber Type
Multimode fiber with 62.5/125 ?m or 50/125 ?m core diameter

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