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Modbus RTU or
BACnet MS/TP
These may be viewed through the vent holes in the cover. | Status | Green LED, on with brief flickers off at a 1-second rate, indicates I/O processor is running. |
Comm
Activity | Yellow
LED flashes each time a packet is successfully received on the RS-485
network. This LED will not flash if unrecognized communication is
received. Yellow LED also flashes each time a packet is sent out on the
RS-485 network line. |
Comm
Error | Normal
operation: Red LED flashes any time a request to an external
device times out (no response), or the response from the remote device
contained an error (such as CRC error).
Bootloader: Upon
power-up, the bootloader checks the integrity of the application. If
program memory has been corrupted in the co-processor, the red light
will remain on with brief flickers off at a 1-second rate, and the
green ACT LED will remain off. |
Base
Power | Green LED
indicates power is present independent of any processor activity. This
indicator is on the secondary side of the internal DC/DC converter. If
power is present at the input terminals but this LED does not
light, there is a hardware fault. |
Server
Power | Green
LED indicates server power is present independent of any processor
activity. The base power is further regulated to produce server power.
Base power must be present before server power can be present. |
| Ethernet | (link) | Yellow
LED indicates an Ethernet link is present. This indicator will
light if a link is present regardless of processor or network activity.
If not lit, check network wiring. |
| (activity) | Green
LED is on solid during portions of the boot-up process, and then
flashes briefly when Ethernet network traffic is detected. |
| I/O Activity | IO | Green LED
flickers rapidly indicating communication between the web server and
I/O processor. NOTE: If not lighted, the system is "off line". Go
to the System->Setup->Config Filepage and click Load. (If system was just powered up or restarted, first wait 2 minutes for the server bootup to complete.) |
| ACT | Green/Yellow
bi-color LED is on solid green most of the time, with rapid brief
flickers of yellow and brief flashes off indicating activity within the
web server. If solid yellow for an extended period, this indicates the
co-processor is communicating, but is in boot loader mode waiting for a
firmware upload. This LED will be yellow briefly during the
power-up sequence, then normally switch to green. |
| Push Button | - | This is a soft button which is unused in AddMe Junior. |
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