Data Sheet for Product

PXC Modular Series for BACnet Networks
Hardware
2
Siemens Industry, Inc. 149-487
Smart Infrastructure 2020-05-20
● PPCL performance during an internal database
backup has been significantly improved. PPCL
will consistently execute during the backup cycle.
● Unused Ethernet ports are now disabled and do
not require the field panel to cold start.
● The handling of COV subscriptions for large
databases has been improved.
● The HMI prompt was changed from A, N, M
(Application/flNdevice/Mstp) to A, N,
B
(Application/flNdevice/Bacnet); allowing the
configuration of routed FLN types and clarifying
that any BACnet device (MS/TP or IP) can be
added to the BACnet ALN.
● The Available memory report has been extended
to show installed Memory (physical memory
installed in hardware), in addition to the existing
metrics already provided:
– Available RAM left
– Number of Fragments of memory
– Largest Contiguous memory
● Auto Save allows the database to be backed up
to flash memory automatically whenever the
database is changed, instead of being an
operator-selected function. It does not provide
any safeguard or protection against power loss.
● PXM10T and PXM10S support: Optional LCD
Local user interface with HOA (Hand-off-auto)
capability and point commanding and monitoring
features.
● MS/TP Point Pickup Module (PPM) support:
Universal Inputs can be configured for analog or
digital input. Input/Output type is configured by
writing to BACnet object properties.
The Simple Network Management Protocol (SNMP)
Agent allows points in the field panel to
communicate with an SNMP manager over
Ethernet.
Hardware
PXC Modular
● The PXC Modular is a microprocessor-based
multi-tasking platform for program execution and
communication with other field panels. It scans
field data, optimizes control parameters, and
manages operator requests for data in seconds.
● The program and database information stored in
the PXC Modular memory is protected with a
battery backup. This eliminates the need for time-
consuming program and database re-entry in the
event of an extended power failure. When battery
replacement is necessary, the PXC Modular
illuminates a “battery low” status LED and can
send an alarm message to selected printers or
terminals.
● The PXC Modular firmware, including the
operating system, is stored in non-volatile flash
memory.
● The PXC Modular provides both an Ethernet port
as well as an RS-485 port for communication on
Automation Level Networks supporting either
BACnet/IP or BACnet MS/TP.
● LEDs provide instant visual indication of overall
operation, network communication, and battery
status.
● Two self-forming buses are an integral part of the
flexibility of the PXC Modular. A self-forming bus
to the right of the controller (see Figure 3)
supports up to 500 points through TX-I/O™
modules. Another self-forming bus to the left of
the controller (see Figure 5) supports hardware
connection to subsystems through Expansion
Modules.
TX-I/O Modules
TX-I/O Modules are modular expansion I/O consisting
of an electronics module and terminal base. The
electronics modules perform A/D or D/A conversion,
signal processing and point monitoring and command
output through communication with the PXC Modular.
The terminal bases provide for termination of field
wiring and connection of a self-forming bus. For more
information, see the
TX-I/O Product Range Technical
Specification Sheet
(149-476).
TX-I/O Power Supply
The TX-I/O Power Supply provides power for TX-I/O
modules and peripheral devices. Multiple Power
Modules can be used in parallel to meet the power
needs of large concentrations of I/O points (see
Figure 2 and Figure 3). For more information, see the
TX I/O Product Range Technical Specification Sheet
(149-476 ).
Figure 2. TX-I/O Power Supply and TX-I/O Modules.
Figure 3. PXC Modular, TX-I/O Power Supply, and TX I/O
Modules.