Datasheet
Automation controls
Automation stations
Desigo™ PX Open
3-12
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Siemens Switzerland Ltd
Building Technologies Division
3
Product Title Data sheet Stock No. Product No.
Extension module for RS232 and RS485‚ up to 100 data points N9281 BPZ:PXA30-RS PXA30-RS
V Integration of third-party equipment and systems into the
Desigo building automation and control system at the auto-
mation level
V Plugs into the PXC00-U modular system controller
Extension module for RS232 and RS485‚ up to 400 data points N9281 BPZ:PXA30-RS1 PXA30-RS1
Extension module for RS232 and RS485‚ up to 2000 data points N9281 BPZ:PXA30-RS2 PXA30-RS2
System controller for the integration N9221 BPZ:PXC00-U PXC00-U
Product Title Data sheet Stock No. Product No.
Extension module for RS232 and RS485‚ up to 100 data points N9281 BPZ:PXA30-RS PXA30-RS
V Integration of third-party equipment and systems into the
Desigo building automation and control system at the auto-
mation level
V Plugs into the PXC00-U modular system controller
Extension module for RS232 and RS485‚ up to 400 data points N9281 BPZ:PXA30-RS1 PXA30-RS1
Extension module for RS232 and RS485‚ up to 2000 data points N9281 BPZ:PXA30-RS2 PXA30-RS2
System controller for the integration N9221 BPZ:PXC00-U PXC00-U
Hardware for M-bus
Hardware for PX Modbus
Stock No. Product No.
BPZ:PX Modbus PX Modbus
PX Modbus system controller
The PX Modbus provides a platform for the integration of various third-party systems and devices. It
allows for the exchange of information with the Desigo building automation and control system at the
automation level.
V BTL tested BACnet communication on LonTalk or IP acoording to BACnet standard (rev 1.10) include
B-BC profile
V AMEV profiles AS-A and AS-B according to guide line 'BACnet 2011 - Version 1.1'
Functions
PX Modbus supports the following Modbus function codes and data formats:
V Function codes:01 ‚ 02 ‚ 03 ‚ 04 ‚ 05 ‚ 06 ‚ 15 ‚ 16.
V Data formats:
- 16-bit signed and unsigned integers
- 32-bit signed and unsigned integers
- 32-bit signed and unsigned 'Modulus-10000'
- Real 32-bit (IEEE floating point)
- ACM 16-bit
- BCD 16-bit and 32-bit
Master or slave
V The PX Modbus can be configured as either a master or slave. It supports up to 2000 third-party sys-
tem data points
Hardware
Modular system controller PXC00-U with PXA30-RS.. card.
V Without expansion module in the left slot the communication mode BACnet/LonTalk is activated.
V With the expansion module PXA30-N in the left slot the communication mode BACnet/IP is active.
PX Modbus










