Operating Instructions
Table Of Contents
- Cyber security disclaimer
- How to Use This Manual
- Chapter 1—Introduction
- Chapter 2—Hardware Features
- 16- and 24-Point Compact Series Diagram
- 36-Point Compact Series Product Diagram
- Supported Point Types
- Compact Series Backup Batteries
- Memory
- Communication Connections
- Compact Series Specifications
- BACnet Compact Series Specifications
- Compact Series Smoke Control Application Requirements
- HOA (Hand-Off-Auto) Upgrade Kits
- PXC Compact on P1
- PXM10S/T Product Overview and Description
- Unitary Equipment Controller
- TX-I/O Product Range Overview
- PX Series Enclosures and Service Boxes
- Chapter 3—Applications
- Chapter 4—Troubleshooting
- Glossary
- Index
Chapter 2—Hardware Features
Communication Connections
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Siemens Industry, Inc.
Owner's Manual
553-104
Building Technologies
2018-10-01
Human-Machine Interface (HMI)/Tool Port
The Human-Machine Interface (HMI)/Tool port provides RS-232 compliant
communications through a quick-connect RJ-45 jack. The HMI port supports the
following functionality:
● Connecting a machine interface device, such as an operator terminal or a text-
based operator terminal, to the PXC Compact.
● Executing firmware flash upgrades.
● 1200 bps to 115.2 Kbps communication is supported.
NOTE:
The communication speed of the port must match the communication speed of the
device connected to it.
USB Device Port
The USB Device port supports a generic serial interface for an HMI or Tool device. The
USB Device port does not support firmware flash upgrades.
10B/100B Ethernet Port
The 10B/100B Ethernet port provides a path for commands and information
transmitted between field panels inside a firewall. This port provides both full- and half-
duplex 10Base-T or 100Base-TX compliant communications over a BACnet/IP or
Ethernet TCP/IP (P2) Automation Level Network (ALN). The highest possible
communication speed is automatically detected and selected.
RS-485 Port
The RS-485 port provides a path for commands and information transmitted between
field panels. This port provides communications over a RS-485 P2 or BACnet MS/TP
Automation Level Network (ALN) or P1 or MS/TP Field Level Network (FLN). The
communication speed is set during startup.
The RS-485 port provides half-duplex, asynchronous serial RS-485 communications
over shielded twisted pair cable. The RS-485 connector is labeled + – to indicate the
positive and negative connections; is a reference pin.
● The PXC-36 provides two RS-485 ports, which are labeled “A” and “B”.
● All PXC-36 models and the PXC-16 and PXC-24 "F" models support P1 or MS/TP
FLN devices on the RS-485 port.
● BACnet MS/TP routed FLN is supported for Programmable TECs (PTECs), Unitary
Equipment Controllers (UECs), and third-party BACnet devices.
– FIN Builder supports MS/TP routed FLNs and IP FLNs.
– PPCL and Point Editing are currently not available on routed FLNs.
● When the PXC Compact Series is operating in P1 Mode (PXC-16 and PXC-24
only), the RS-485 port connects the PXC Compact to a P1 FLN where it emulates
a TEC.
● When communicating on an RS-485 ALN, the Virtual AEM may be used to
communicate with a P2 Ethernet network.