Distech Controls EC-BOS-8 UUKL Installation Manual page 6

Figure 8: LEDs and brief descriptions.
1 WiFi (Green) - Lit whenever WiFi config switch is not Off.
2 RS485 "A" (COM1): Transmit (TX, Yellow) and Receive (RX,
"RS485
Green). See LEDs".
3 RS485 "B" (COM2): Transmit (TX) and Receive (RX).
4 STAT (Green) - Remains lit. See
5 BEAT (Yellow) - "Heartbeat" LED that blinks at 1Hz during
"BEAT (Heartbeat)
normal operation. See
6 Secondary Ethernet, SEC (LAN2) "Link" (Green) and "Activity"
(Yellow).
7 Primary Ethernet SEC (LAN1) "Link" (Green), "Activity"
"PRI, SEC (Ethernet)
(Yellow). See
8 (Behind Door) BACKUP - Green, typically Off unless a USB drive
is inserted, or a backup, restore, or factory recovery image
install is in progress. See
RS485 LEDs
RS485 port A (COM1) and RS485 port B (COM2) each have two LEDs
reflecting port activity as follows:
•
Yellow (TX): indicates the EC-BOS-8 UUKL is transmitting data on
the RS485 port.
•
Green (RX): indicates the EC-BOS-8 UUKL is receiving data from an
RS485 device connected to this port.
These LEDs use a fixed "on time" when a message is detected on the
port. If a receive LED is on constantly, this can indicate a wiring problem,
such as a shorted wire or reversed wiring.
STAT (Status) LED
The green "STAT" LED provides a CPU machine status check and
should remain lit whenever the EC-BOS-8 UUKL is powered. If the status
LED does not light while power is applied, contact System Engineering
for technical support.
BEAT (Heartbeat) LED
In normal operation, the yellow heartbeat "BEAT" LED blinks at 1 Hz, at
50%/50% on/off duty cycle.
During EC-BOS-8 UUKL bootup, this LED may blink at 1 Hz with a
90%/10% on/off duty cycle, or in some other irregular pattern. When
bootup completes, the platform daemon is started, and the normal 1 Hz
flash at 50%/50% on/off duty cycle returns.
The 1Hz, 90%/10% on/off "BEAT" flash at bootup also
occurs during other critical operations, such as a firmware
upgrade to the EC-BOS-8 UUKL and/or any attached
modules. To be safe, do not remove power from the EC-
BOS-8 UUKL while its "BEAT" LED flashes with a 90%/10%
on/off duty cycle. Wait for the normal (50%/50%) flash to
return before removing power.
6/10
"STAT (Status)
LED".
LED" on page 6.
LEDs" on page 7.
"BACKUP
LED" on page 7.
If the "BEAT" LED stays on constantly, does not light, or blinks very fast,
contact System Engineering for technical support.
PRI, SEC (Ethernet) LEDs
Two LEDs for each of the two LAN ports indicate as follows.
•
Green (left-side) "Link" LED operates as follows:
-
Off: No Ethernet link is made.
-
On: Ethernet link is made.
•
Yellow (right-side) "Activity" LED operates as follows:
-
Off: No Ethernet activity.
-
On: Blinking indicates activity (typical if Link is On).
BACKUP LED
A green "BACKUP" LED is behind the front access door and is visible
only if the door is open—see Figure 9
Typically, this LED remains Off.
Possible "BACKUP" LED states are:
On solid: USB backup media detected. Occurs when you insert a USB
flash drive, to signal a backup is possible.
Alert mode: 100ms On/100ms Off repeating (fast blink). Occurs for
several seconds in the following scenarios:
•
When USB media was detected, after the EC-BOS-8 UUKL BACKUP
button is pressed (backup mode).
•
When the EC-BOS-8 UUKL is power cycled while holding in the
BACKUP button (recovery/restore mode)
Working mode: 1s On/1s Off repeating (slow blink). Never remove
power in this mode; see the Warning
Error mode: Two quick 200ms flashes On, 3 seconds Off, repeating.
Some scenarios where the BACKUP LED is used include:
USB Drive Inserted
A USB flash drive is inserted in the USB 2.0 port, to either backup a
commissioned unit to the USB drive, or to restore an existing backup rom
the drive. The BACKUP LED lights when the USB drive is mounted.
Backup
A backup is initiated by pressing the BACKUP button from 1 to 5 seconds
before releasing, where the LED starts blinking in "alert mode" for 5
seconds. Another button press in this period starts the backup, where the
LED blinks in the "working mode" pattern. When the backup completes, the
LED turns Off, and the USB drive can be removed.
Boot to Recover or Restore Image
The unit is powered up while holding in the BACKUP button, for either:
- (No USB media detected) A "factory defaults" recovery from an
onboard partition with default image.
-
(If USB media is detected) For the restore of a backup image on the
USB flash drive. Note this also requires a serial shell connection to
the EC-BOS-8 UUKL Debug port.
In either case, the BACKUP LED starts blinking in "alert mode" pattern. If
you release the BACKUP button during this period (within 5 seconds),
initiation begins for either:
- If no USB media is detected, the "factory defaults" recovery image
installation.
- If USB media is detected, the system enters "restore mode". In this
mode, after login with serial shell, a menu lists the available backup
images on the USB flash drive. You can select one (and enter the
unique security key to initiate its installation), or alternatively select to
install the "factory defaults" recovery image.
During a recovery or restore image installation, the LED blinks in the
"working mode" pattern. When the image installation completes, the
BACKUP LED turns Off. An EC-BOS-8 UUKL reboot is then required.
See the EC-BOS-8 UUKL Backup and Restore Guide document for
complete details on EC-BOS-8 UUKL backups, restores, and recoveries.
on page 7.
on page 7.