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Siemens Schweiz AG A6V11937668_en--_l
Smart Infrastructure 2023-12-22
Functions
Optimized, flexible automation station for HVAC and building automation and control
systems
● System functions (alarming, scheduling, trending, access protection with individually
definable user profiles and categories)
● Integrates data points and/or subsystems via Modbus RTU
● Integration of wired M-bus meters via RS485 level-converter:
– Offline and/or online engineering with ABT Site. No additional M-bus tool required
– Primary and/or secondary device addressing
● The following functions are available with KNX PL-Link bus:
– Communication with RDG2..KN room thermostats, sensors, and operator units
– Plug-and-play connection of Siemens field devices with KNX PL-Link
● Engineering and commissioning with the ABT Site Tool using graphical function charts
● Freely programmable. All function blocks, available in libraries, can be graphically
connected.
● BTL tested BACnet communication on MS/TP, in compliance with the BACnet standard
including B-BC profile (Rev. 1.16)
● IT security including HTTPS, IEC-62443 4-2 (Security Level 2), and BACnet Secure
Connect
● BACnet Secure Connect support as BACnet/SC node
● Generic operation via embedded web interface
● WLAN interface for engineering and commissioning
● Operating voltage AC 24 V or DC 24 V
● Direct connection of field devices
● DIN rail or screw mounting
● Plug-in screw terminal blocks
Type summary
PXC4.M16 variants
1)
PXC4.M16S PXC4.M16
Order number S55375-C109 S55375-C101
Number of inputs and outputs (Onboard) 16 16
Number of universal inputs and outputs (UIO) 12 12
Number of relay outputs (DO) 4 4
Number of inputs and outputs (Onboard + TXM) up to 40 up to 40
Number of integration data points
(Modbus RTU)
0 up to 40
Total number TXM-I/Os and integration DPs 40
2)
80
2)
Number of KNX PL-Link devices 0 up to 64
2)
Number of configurable RS485 interfaces for Modbus RTU
integration
0 1
Number of M-bus meters wired via level converters (RS485)
3)
0 up to 250
1)
For details on engineering, see PXC4, PXC5 & PXC7 Planning overview, A6V13054435.
2)
KNX PL-Link data points do not count as integration points. For KNX PL-Link, only the limits on BACnet objects
are considered.
3)
The limitation is given by the maximum number of integration data points and maximum number of BACnet
objects.
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