KNX
KNX block based on NCN5130 transceiver w/ isolation
Transceiver
This block uses an Onsemi NCN5130 transceiver. Bus access is isolated by TI ISO7221A
Interface
| Function | Block Pin | Info |
|---|---|---|
| Power | 6 | 3.3-5V |
| 3,4,39,40 | GND | |
| I2C Config | 19/20 | EEPROM 24c32 |
| Serial port | 33/34 | 38400 8E1 |
Connector
The block supports either:
- standard black/red KNX connector
- 2-pin plugable screw terminal
Usage
This is how to use a TP-UART (KNX) interface on i.e. slot 2 with NanoPiNeo:
knxd -p /run/knxd/knxd.pid -S --eibaddr=1.1.128 -t 65535 -b tpuarts:/dev/ttyS2:38400
For direct access in FHEM add to fhem.cfg:
define TPUART TUL tul:/dev/ttyS2@38400 1.0.1