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Ethernet Ports

There are three Ethernet ports on the Ethernet Interface. Only one Ethernet port may be used at a time. The Ethernet Interface automatically detects the Ethernet port in use; special configuration is not required. (See also the topic “Disable Onboard 10Base2 Port Jumper” below.)

Caution

Do not connect or disconnect a transceiver or network cable to the AUI or BNC ports while power is applied to the PLC. This may blow the port fuse and/or cause permanent damage to the Ethernet Interface.

10BaseT Port

This 8-pin, RJ-45 port provides a direct connection to a 10Base-T (twisted pair) Ethernet network without an external transceiver.

AUI Port

This 15-pin, D-type AUI port with slide-lock provides the electrical and mechanical interface to the user-provided IEEE 802.3 transceiver cable, which connects the AUI Port to an external Ethernet compatible transceiver (see Appendix B, “Communications Ports Characteristics”, for the characteristics of the AUI port). The external transceiver is directly connected to the Ethernet cable.

10Base2, BNC Port

This BNC port provides a direct connection to a 10Base2 (thin wire) Ethernet network without an external transceiver.

CMM742 Labels

Default Station Address Label

The Default Station Address label lists the MAC address to be used by this Interface.

Disable Onboard 10Base2 Port Jumper

This jumper (“JP7”) must be in place to ensure proper network operation only when using an external AUI transceiver connected to the AUI port that is externally powered. This jumper is normally not installed.

Replaceable +12VDC Fuse

A user-replaceable fuse (FU3) is provided on the +12VDC power that is supplied by the Ethernet Interface to the AUI network port for use by an external transceiver. Replace only with a 5 x 20mm, 250V, 1 A, fast-acting fuse.

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TCP/IP Ethernet Communications for the Series 90™ PLC User's Manual– May 2002

GFK-1541B

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Image 57
GE GFK-1541B manual 10BaseT Port, AUI Port, 10Base2, BNC Port, CMM742 Labels Default Station Address Label