Leds - ZyXEL Communications MES3500-24F User Manual

When daisy-chaining further Switches ensure that the signal output pins you use are the same as
2
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

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 COLOR
PWR Green
SYS Green
ALM Red
10/100 Mbps Fast Ethernet Ports (MES3500-24)
1 ~ 24 Green
Amber
100 Mbps Fast SFP Ports (MES3500-24F)
1 ~ 24 Amber
Mini-GBIC Slots
MES3500-24/24F User's Guide
11 10
11 10
11 10
Pin Assignments
STATUS DESCRIPTION
On The system is turned on.
Off The system is off.
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.
On A hardware failure is detected, or an external alarm is active.
Off The system is functioning normally.
Blinking The system is transmitting/receiving to/from a 10 Mbps Ethernet
network.
on The link to a 10 Mbps Ethernet network is up.
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.
On The port has a successfule connection.
Off No Ethernet device is connected to this port.
Blinking This port is receiving or transmitting data.
Chapter 3 Hardware Overview
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