USB Host Port
The USB host port supports a USB printer and connection to a modem through a USB-
to-RS-232 adapter. A USB hub may be used to support both a printer and modem on
the USB host port.
● On a BACnet/IP ALN, the USB Host port provides support for service modems and
line printers.
● On an Ethernet TCP/IP or RS-485 ALN, the USB Host port provides support for
dial-up or service modems and line printers.
TX-I/O Island Bus
The PXC-36 offers the flexibility of expanding the total point count through a self-
forming island bus. With the addition of TX-I/O modules and a TX-I/O Power Supply,
up to 32 points (or four TX-I/O modules) can be supported.
An additional license may be required to enable the Island Bus.
HOA (Hand-Off-Auto) Upgrade Kits
HOA Upgrade Kits are available for PXC Compact Series field panels. HOA Upgrade
Kits are not compatible with Unitary Equipment Controllers (UEC 16 or UEC 24). The
upgrade kits replace PXC Compact covers with new covers equipped with manual
override switches and LEDs for visual feedback at the field panel.
Users can override the default switch assignment or customize the switches to their
desired configuration.
● The HOA module can be used to override outputs and monitor inputs.
● The HOA mapping and definition of a logical point in the database can be done in
any order.
● The HOA is hot-swappable. The module can be installed without powering down
the controller and interrupting facility operations.
● The HOA module can also be remote mounted on the inside or outside of an
enclosure door, using an optional accessory sold separately.
The firmware provides a default HOA switch assignment based on the type of the host
field panel. There are new menus available that allow for the identification of what HOA
module is connected and communicating, along with the ability to view and customize
the HOA switch mapping.
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