About this task
N2-capable controllers support the full range of possible N2 device addresses provided by the N2 protocol standard (1-254).
To configure a controller to communicate using the N2 protocol, complete the following steps:
Procedure
- Disconnect the 24 VAC supply from the controller.
- Set the address switches to the desired N2 address. For details about setting a device address, see Setting the device address.
- Reconnect the 24 VAC supply to the controller.
- Using an SA bus connection, download the firmware and controller application file configured for N2 to the controller.
Switching the Communications Protocol from N2 to MS/TP
About this task
For N2 sites that are converting to BACnet MS/TP, you can switch the communications protocol of N2-configured MS/TP controllers back to BACnet MS/TP.
To switch the controller operating in N2 mode back into BACnet MS/TP mode, complete the following steps:
Procedure
- Disconnect the 24 VAC supply from the controller.
- Set the address switches to the desired BACnet MS/TP address. For details about setting a device address, see Setting the device address.
- Ensure the DIP switch 128 is set to OFF.
- Reconnect the 24 VAC supply to the controller.
- Using an SA Bus connection, download a controller application file configured for BACnet MS/TP to the controller.