Components
I/O board
| # | Left side | # | Right side |
|---|---|---|---|
| 1. | KOMM2 expansion port | 7. | Debug port |
| 2. | Status LEDs | 8. | Reset button |
| 3. | SNAP module port | 9. | Docking port for CPU board |
| 4. | Failover relays | 10. | Programming header |
| 5. | RS232 port | 11. | High/Low/RTD/VDC headers |
| 6. | 1-Wire port | 12. | Shunt port (P14) |
| 13. | Barrel jack | ||
| 14. | Output to the Controller | ||
| 15. | Input from outdoor temperature sensor |
Status LEDs on the I/O board
There are 6 separate LED:s to the left of the KOMM2 expansion port. They are marked (from right to left), D13, D14, D5, D6, D7 and D12.
| # | Description |
|---|---|
| D13 | Wired to expansion module on U7 |
| D14 | Wired to expansion module on U7 |
| D5 | Debug function from ARM CPU board |
| D6 | Debug function from ARM CPU board |
| D7 | Debug functuon from ARM CPU board |
| D12 | Heartbeat from the I/O board microcontroller. Off for 10 seconds, On for 10 seconds. In Off state when board is power on. |
ARM CPU board
- Communication pins.
- Micro SD card.
- Power LED (green) and Status LED (red).
- Ethernet port.
When the Power LED lights up, the CPU board has power. During start-up, the Status LED will briefly (for a few seconds) light up.
If the Status LED is continuously lit for more than 30 seconds, then an unknown fault has occurred.
The ethernet ports leftmost LED (green) lights up only if the board has detected a 100MBit/s link. A limited 10Mbit/s link does not light the LED. The rightmost (orange) LED blinks when there is network traffic over the port.
KOMM2 add-on board (optional)
- 20-pin ribbon cable. Connects to P1 on the I/O board.
- GPRS modem connector (optional).
- M-Bus port.
PSU
Power adaptor, 100-240V AC 50/60Hz to 5V DC, 3A
- Max cable length: 1.5m
- Center Pin positive
- Inner barrel diameter; 2.1mm
- Outer barrel diameter; 5.5mm
- Barrel length; 12mm
