MAINTAINING THE CONTROLLER
SNAP PAC S-Series User’s Guide
50
Serial Port LEDs
The S0, S1, and S2 LEDs on a SNAP-PAC-S1 controller indicate serial port operation as follows:
•
Green
—Transmit
•
Red
—Receive
•
Amber
—Transmit and Receive (the LED is actually changing rapidly between green and red,
which appears amber)
Each serial port on a SNAP-PAC-S2 has two green LEDs to indicate Transmit and Receive activity for
that port.
WLAN LED (Wired+Wireless Models Only)
The WLAN LED on a SNAP-PAC-S1-W or SNAP-PAC-S2-W indicates wireless LAN status and activity.:
12
slow
Firmware failed to initialize
communications on
ENET 2.
Contact Product Support.
13
slow
Realtime clock failure
Contact Product Support.
Color of
LED
Means
Red
The controller is disconnected from the wireless LAN.
Orange
The wireless LAN interface is scanning, associating, and
authenticating the wireless network.
Green
The controller is connected to the wireless network.
Blinking green
Wireless LAN activity
Number of
Blinks
Speed of
Blinks
Means
Problem and Workaround
