This 'PACE-Bus' (RS232) interface is used to connect the 'Desk call station extension (24 buttons)' PTO2001-A1. It can be used to connect control panels or for diagnosis.
'PACE-Bus' (RS232) connector - 'CN4'
Pin | Description | Remark |
|---|---|---|
1 | TX | Send RS232 data |
2 | RX | Receive RS232 data |
3 | GND | GND reference voltage |