Chapter 3 Hardware Overview
MES-3528 User’s Guide
40
2 When daisy-chaining further Switches ensure that the output power pins you use
are the same as those you used when connecting to the first switch, as shown in
the diagram below.
Figure 16 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.
12311 10
.........
12311 10
.........
12311 10
.........
Pin Assignments
Table 2 LED Descriptions
LED COLOR
STATU
S
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.
Ethernet Ports
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