Chapter 3 Hardware Overview

2When daisy-chaining further Switches ensure that the signal output pins you use are the same as those you used when connecting to the first switch, as shown in the diagram below.

Figure 17 Daisy-chaining an External Alarm Sensor to Other Switches of the Same Model

 

11

10

.........

3

2

1

 

 

 

 

 

 

 

 

11

10

.........

3

2

1

 

 

 

 

 

 

 

11

10

.........

3

2

1

 

 

 

 

Pin Assignments

3.2 LEDs

After you connect the power to the Switch, view the LEDs to ensure proper functioning of the Switch and as an aid in troubleshooting.

Table 2

LED Descriptions

 

LED

 

COLORSTATUS

DESCRIPTION

PWR

 

Green

On

The system is turned on.

 

 

 

 

 

 

 

 

Off

The system is off.

 

 

 

 

 

SYS

 

Green

On

The system is on and functioning properly.

 

 

 

 

 

 

 

 

Blinking

The system is rebooting and performing self-diagnostic tests.

 

 

 

 

 

 

 

 

Off

The power is off or the system is not ready/malfunctioning.

 

 

 

 

 

ALM

 

Red

On

A hardware failure is detected, or an external alarm is active.

 

 

 

 

 

 

 

 

Off

The system is functioning normally.

 

 

 

 

10/100 Mbps Fast Ethernet Ports (MES3500-24)

 

 

 

 

 

1 ~ 24

 

Green

Blinking

The system is transmitting/receiving to/from a 10 Mbps Ethernet

 

 

 

 

network.

 

 

 

 

 

 

 

 

on

The link to a 10 Mbps Ethernet network is up.

 

 

 

 

 

 

 

Amber

Blinking

The system is transmitting/receiving to/from a 100 Mbps Ethernet

 

 

 

 

network.

 

 

 

 

 

 

 

 

On

The link to a 100 Mbps Ethernet network is up.

 

 

 

 

 

 

 

 

Off

The link to an Ethernet network is down.

 

 

 

 

100 Mbps Fast SFP Ports (MES3500-24F)

 

 

 

 

 

1 ~ 24

 

Amber

On

The port has a successfule connection.

 

 

 

 

 

 

 

 

Off

No Ethernet device is connected to this port.

 

 

 

 

 

 

 

 

Blinking

This port is receiving or transmitting data.

 

 

 

 

Mini-GBIC Slots

 

 

 

 

 

 

 

 

37

MES3500-24/24F User’s Guide