B&B Electronics EIR608-4SFP - Manual - Manual (Page 16)

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Manual Documentation Number: EIR608-xSFP_4812m
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 – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-europe.com
Ports
RJ-45 ports (Auto MDI/MDIX): The RJ-45 ports are auto-sensing for
10Base-T, 100Base-TX or 1000Base-T devices connections and Auto
MDI/MDIX.
 RJ-45 Pin Assignments
Pin Number Assignment
1 Tx+
2 Tx-
3 Rx+
6 Rx-
All ports on this industrial switch support automatic MDI/MDI-X operation.
You can use straight-through cables (See Figure below) for all network
connections to PCs or servers, or to other switches or hubs. In
straight-through cable, pins 1, 2, 3, and 6, at one end of the cable, are
connected straight through to pins 1, 2, 3 and 6 at the other end of the
cable. The 10BASE-T/100BASE-TX/1000BASE-T MDI and MDI-X port
pin outs are as tabled below.
Pin MDI-X Signal Name MDI Signal Name
1 Receive Data plus (RD+) Transmit Data plus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)
3 Transmit Data plus (TD+) Receive Data plus (RD+)
6 Transmit Data minus (TD-) Receive Data minus (RD-)
Straight Through Cable Schematic