Leds - ZyXEL Communications MES3500 series User Manual

You can also daisy-chain the external alarm to another ZyXEL Switch which supports the external
alarm feature. If daisy-chaining to a ZyXEL switch that is a different model, check your switch's
documentation for the correct pin assignments.
Use wires of the correct gauge to connect either of the signal output pin pairs (1-normal close, 2-
1
common) or (2-common, 3-normal open) on the Signal connector to the input signal pin pairs of
an Signal connector on another ZyXEL Switch.
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 19 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 4 LED Descriptions
LED COLOR
PWR Green
SYS Green
ALM Red
10/100 Mbps Fast Ethernet Ports (MES3500-24 & MES3500-10)
1 ~ 24 Green
1 ~ 8
Amber
Chapter 3 Hardware Overview
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.
MES3500 Series User's Guide
33
.........
3 2 1
.........
3 2 1
.........
3 2 1