Trend IMC-101 User Manual download pdf (Page 15)

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Off

100BaseTX Port’s link is inactive

FX port’s 100 Mbps is active

Blinking

Data is being transmitted at 100

Mbps

100M

(FX)

GREEN

Off

100BaseFX port is inactive

100BaseFX port is being

transmitted at full duplex

Blinking

Collision occurs

FDX/COL

GREEN

Off

100BaseFX port is being

transmitted at half duplex

Auto MDI/MDI-X Connection

The Auto MDI/MDI-X function allows users to connect MOXA Industrial

Media Converter

’s 10/100BaseTX ports to any kind of Ethernet device,

without paying attention to the type of Ethernet cable being used for the

connection. This means that you can use either a straight-through cable

or cross-over cable to connect IMC to Ethernet devices.

Dual Speed Functionality and

Switching

MOXA Industrial Media Converter’s 10/100 Mbps RJ45 switched port

auto negotiates with the connected device for the fastest data

transmission rate supported by both devices. All models of MOXA

Industrial Media Converter are plug-and-play devices, so that software

configuration is not required at installation, or during maintenance. The

half/full duplex mode for the RJ45 switched ports is user dependent and

changes (by auto-negotiation) to full or half duplex, depending on which

transmission speed is supported by the attached device.

Auto-Negotiation and Speed Sensing

All of MOXA Industrial Media Converter’s RJ45 Ethernet ports

independently support auto-negotiation for transmission speed in the

10BaseT and 100BaseTX modes, with operation according to the IEEE

802.3u standard. This means that some nodes could be operating at 10

Mbps, while at the same time, other nodes are operating at 100 Mbps.

Auto-negotiation takes place when an RJ45 cable connection is made,

and then each time a LINK is enabled. MOXA Industrial Media

Converter advertises its capability for using either 10 Mbps or 100 Mbps

transmission speeds, with the device at the other end of the cable

expected to similarly advertise. Depending on what type of device is

connected, this will result in agreement to operate at a speed of either

10 Mbps or 100 Mbps.

If a MOXA Industrial Media Converter RJ45 Ethernet port is connected

to a non-negotiating device, it will default to 10 Mbps speed and

half-duplex mode, as required by the IEEE 802.3u standard.

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