Moxa EDS-G205-T [10/13] Attention

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Alarm Contact

The Moxa EtherDevice Switch has one Alarm Contact located on the top

panel. For detailed instructions on how to connect the Alarm Contact

power wires to the two middle contacts of the 6-contact terminal block

connector, see the Wiring the Alarm Contact section on page 6. A

typical scenario would be to connect the Fault circuit to a warning light

located in the control room. The light can be set up to switch on when a

fault is detected.

The Alarm Contact has two terminals that form a Fault circuit for

connecting to an alarm system. The two wires attached to the Fault

contacts form an open circuit when (1) EDS has lost power from one of

the DC power inputs, or (2) one of the ports, for which the corresponding

PORT ALARM DIP switch is set to ON, is not properly connected.

If neither of these two conditions occurs, the Fault circuit will be closed.

DIP Switch Settings

The default setting for each DIP switch is OFF.

The following table explains the effect of setting

the DIP switches to the ON positions.

DIP Switch

Setting

Description

BSP

Enables broadcast storm protection

OFF

Disables broadcast storm protection

----

refers to Jumbo

Frame

Enables jumbo frame function

OFF Disables jumbo frame function

PORT Alarm

Enables the corresponding PORT Alarm. If

the port’s link fails, the relay will form an

open circuit and the fault LED will light up.

OFF

Disables the corresponding PORT Alarm.

The relay will form a closed circuit and the

Fault LED will never light up.

ATTENTION

To actively update DIP switch settings, power off and then power

on the EDS.