4. Ensure that the controller's rotary switches are set to the correct device address.
For details about setting a device address, see Setting the device address.
For more information about device addresses in wireless applications, refer to the WNC1800/
ZFR182x Pro Series Wireless Field Bus System Technical Bulletin (LIT-12012356) or the ZFR1800 Series
Wireless Field Bus System Technical Bulletin (LIT-12011295).
5. Reconnect the 24 VAC supply to the controller.
For more information about the FX-ZFR 1800 Wireless Field Bus system, refer to the FX-ZFR Series
Wireless Field Bus System Bulletin (LIT-12011660). For more information on the FX-ZFR Pro Wireless
Field Bus system, refer to the WNC1800/FX-ZFR182x Pro Series Wireless Field Bus System Bulletin
(LIT-12012378).
Setting the device address
The CVM controllers are master devices on MS/TP (FC or SA) buses. Before you operate controllers
on a bus, you must set a valid and unique device address for each controller on the bus. You set the
CVM device address by setting the positions of the Device Address rotary switches at the top of the
controller. See CVM03050 physical features.
The following table describes the valid rotary switch device addresses for communications bus
applications.
FC bus communication mode Valid device address range
Wired MS/TP communication
4-127
Note: Addresses 0-3 are reserved and not for use on
equipment controllers.
Zigbee wireless communication
4-127
Note: Addresses 0-3 are reserved and not for use on
equipment controllers.
N2 communication
1-254
Note: Addresses 0 and 255 are reserved and not for
use on equipment controllers.
Note: The controller auto-detects if the communication protocol is MS/TP, Zigbee Wireless, or
N2 on the FC Bus.
The device address is a decimal address set using three rotary switches. The numbers are ordered
from left to right, most significant bit (MSB) to least significant bit (LSB) when the controller is
oriented. . In the following figure, the switches are set to 1 2 3, designating this controller's device
address as 123.
F4-CVM VAV Terminal Equipment Controllers Installation Instructions24
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