User Manual

System overview
Automation level
3
14 | 353 CM110664en_07
3.2 Automation level
The Desigo PX automation system meets all the requirements for the control
and monitoring of heating, ventilation, air conditioning systems and other
building services. Desigo PX with its programmable automation stations and
graded range of operator units is a scalable and open system.
D-MAP programming language
The starting point for the engineering of the application functions is the range
of user-friendly application blocks and function blocks in the D-MAP (Desigo
Modular Application Programming) programming language. D-MAP is optimized
for applications for technical building installations and is based on the IEC 1131
standard. The graphical user interface of the Xworks Plus (XWP) engineering
software ensures an efficient approach.
System functions
All PX automation stations have comprehensive system functions, such as
alarm mangement, time schedules, trend histories, time synchronisation, global
data distribution, and life check, that work completely autonomously.
BACnet communication for maximum openness
Devices on the automation level communicate with each other and with the
management platform and the operating devices via the BACnet protocol.
The use of BACnet/IP or BACnet/LonTalk underlines the openness of the
system and allows the easy integration of systems and components from third-
party manufacturers.
Automation stations and system controllers
PX Modular
The Desigo PX range of programmable modular automation stations provides
maximum flexibility for controlling and monitoring building services.
Comprehensive system functions, such as alarm management, time schedules
and trend histories, meet all requirements for technical building installations.
The PXX-Lxx extension modules let you connect LonWorks devices and third-
party devices.
The PXX-PBUS extension module lets you integrate PTM IO modules.
The PXA40-Tx option modules provide functions, such as web operation.
TX-I/O
Desigo TX-I/O modules provide the interface between PX Modular and the field
level devices, the actuators and sensors.
A range of configurable and flexible I/O modules are available for signalling,
measuring, metering, switching and controlling.
Some modules can be manually operated according to ISO 16484, and have an
LCD display with configurable LEDs.
The integrated isolating-terminals facilitate the hardware test during
commissioning.
TX Open
TXIx.OPEN lets you integrate third-party systems, such as M-Bus meters,
pumps (Grundfos, Wilo) and variable speed drives (Siemens G120P), and
connect intelligent aggregates, e.g., chillers, via the Modbus protocol.
PX Compact
The Desigo PX range of programmable compact automation stations with
integrated I/Os provides optimized solutions for small to mid-sized technical
building installations. Comprehensive system functions, such as alarm
management, time schedules and trend histories, meet all requirements for
technical building installations.
PX Compact with island bus
The easy to install PXC22.1…D and PXC36.1…D compact automation stations
offer increased flexibility due to the island bus.
Properties: