4. Using an SA Bus connection, download a controller
application file configured for BACnet MS/TP to the
controller.
Configuring wireless communications
About this task:
To configure a controller for use with the ZFR Pro Series
Wireless Field Bus system, complete the following steps:
1. Disconnect the 24 VAC supply from the controller.
2. Wire the input/output terminals and SA bus.
Note:
In wireless network applications, do
not connect any wires to the FC bus terminal
block. (Connect the SA/FC terminal block on an
expansion module to an SA bus only.)
3.
Important:
Before the CVM controller is powered
on, connect the ZFR Pro Wireless Field Bus Router
to the FC bus port (RJ-12 modular jack) on the front
of the controller.
4. Ensure that the controller's rotary switches are
set to the correct device address. For details about
.
5. Reconnect the 24 VAC supply to the controller.
Result:
For more information about the ZFR Pro Wireless Field
Bus system, refer to the
WRG1830/ZFR183x Pro Series
Wireless Field Bus System Technical Bulletin (LIT-12013553)
.
Setting the device address
Metasys equipment 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.
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.
The device address is a decimal address set using three
rotary switches located at the top of the controller. The
numbers are ordered from left to right, most significant
bit (MSB) to least significant bit (LSB) when the controller
is oriented as shown in Figure 1. In the following figure,
the switches are set to 1 2 3, designating this controller's
device address as 123.
Figure 10: Device address rotary switch block
The device address must match the device address
defined in the Controller Configuration Tool (CCT) under
Define Hardware > Network Settings
.
To set the device addresses on controllers, complete the
following steps:
1. Set a unique and sequential device address for each
of the devices connected on the FC or SA, starting
with device address 4.
2. To ensure the best bus performance, set sequential
device addresses with no gaps in the device address
range (4, 5, 6, 7, 8, 9, and so on). The devices do not
need to be physically connected on the bus in their
numerical device address order.
3. Write each controller's device address on the white
label below the Device Address Rotary Switch Block
on the controller's cover.
For more information about controller device addresses
and how to set them on MS/TP buses, refer to the
MS/TP
Communications Bus Technical Bulletin (LIT-12011034)
.
Removing a terminal block
About this task:
To remove a terminal block from the circuit board,
complete the following steps:
Note:
You need a flat blade screwdriver to remove
the terminal block.
1. To prevent any possibility of damage from an
accidental short,
remove power from the
controller
.
2. Underneath the terminal block, in the small gap
between the bottom of the terminal block and
the circuit board, insert the flat blade of the
screwdriver.
Figure 11: Terminal block
M4-CVM VAV Box Controllers Installation Guide
14
