Moxa IMC-101G Installation Guide download pdf (Page 13)

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Dual Speed Functionality and

Switching

The IMC-101G’s 10/100/1000 Mbps RJ45 switched port auto negotiates with

the connected device for the fastest data transmission rate supported by both

devices. All models of the IMC-101G 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 the IMC-101G’s RJ45 Ethernet ports independently support

auto-negotiation for transmission speeds of 10 Mbps, 100 Mbps , and 1000

Mbps, with operation according to the IEEE802.3u standard.

This means that some nodes could be operating at 10 Mbps, while at the same

time, other nodes are operating at 100 Mbps or 1000Mbps.

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

each time a LINK is enabled. The IMC-101G advertises its capability for using

10 Mbps, 100 Mbps, or 1000 Mbps transmission speeds, with the device at the

other end of the cable expected to advertise similarly. Depending on what type

of device is connected, this will result in agreement to operate at a speed of 10

Mbps, 100 Mbps, or 1000 Mbps.

If an IMC-101G’s 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

IEEE802.3u standard.

Specifications

Technology

Standards IEEE802.3, 802.3u, 802.3x, 802.3z/ab, Link Fault

Pass-Through

Interface

RJ45 Ports 10/100BaseT(X) auto negotiation speed, F/H duplex

mode, and auto MDI/MDI-X connection

SFP Ports Optional 1000BaseSX/LX/LHX/ZX (LC connector)

LED Indicators PWR1, PWR2, FAULT, 10/100M(TP port), 1000M

(TP and Fiber port)

DIP Switches Port break alarm mask, Link Fault Pass Through,

SFP AN/Force

Alarm Contact One relay output with current carrying capacity of

1A @ 24 VDC

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Moxa IMC-101G Installation Guide Page 13