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| Discrete Outputs | DO 1-8 | Green LED indicators light when respective relay output is "on". |
Power &
Processor Activity | ACT | Green LED, on with brief flickers off at a 1-second rate, indicates I/O processor is running. |
| PWR | 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. |
Modbus RTU or
BACnet MS/TP | TX | Yellow LED flashes each time a packet is sent out on the RS-485 network line. |
| RX | 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. |
| ERR | 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. |
| 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. |
| 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. |
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| Discrete HOA Switches | | The
8 HOA switches are 3-position switches which may override outputs
by driving the relay coils (load is not directly switched). The lower
position (A) puts the output in automatic mode under control of the
processor. The middle position (O) forces the relay off, and the upper
position (H) forces the relay on. The LED directly above the
HOA switch indicates the state of that output. |
| Soft Button | | The soft button has software defined use if and when noted. |
