SIEMENS PXC7.E400M Automation Stations Owner’s Manual

SIEMENS PXC7.E400M Automation Stations

Specifications

• Product Name: Design Automation Stations PXC7
• Communication Protocols: BACnet/IP, BACnet Secure Connect, Modbus RTU, Modbus TCP, BACnet MS/TP
• Operating Voltage: AC or DC 24 V
• Interfaces: WLAN, Ethernet, KNX PL-Link bus, RS485
• Mounting: Standard rails or wall mount
• Security: HTTPS, IEC-62443 4-2, BACnet Secure Connect

Product Usage Instructions

Installation

1. Mount the Desigo PXC7 on standard rails or a wall using the provided mounting hardware.
2. Connect the necessary input/output modules and devices to the station using plug-in screw terminal blocks.
3. Ensure proper power supply with AC or DC 24 V.

Configuration

1. Access the embedded web interface for generic operation and configuration.
2. Set up user profiles and categories for access protection.
3. Integrate data points and subsystems via Modbus RTU, Modbus TCP, or other supported protocols.

Operation

1. Monitor system functions such as alarming, scheduling, and trending.
2. Utilize the WLAN interface for engineering tasks and commissioning.
3. Ensure cloud connectivity for remote access and data points time series.

FAQ

• Q: What is the operating voltage of the Design PXC7?
• A: The Design PXC7 operates on AC or DC 24 V.
• Q: How can I integrate M-bus energy meters with the PXC7?
• A: M-bus energy meters can be integrated directly with the PXC7 using the integrated mini power supply or via an RS485 level converter.
• Q: Can the Desigo PXC7 communicate with BACnet MS/TP devices?
• A: Yes, the PXC7 supports integration of BACnet MS/TP devices in a field-level network.

To automate building automation and control systems

• Modular automation station and system controller for HVAC and building automation and control systems
• BACnet/IP communication (BTL certified)
• BACnet Secure Connect communication
• Comprehensive management and system functions
• Freely programmable automation stations for maximum flexibility
• Connects TXM input/output modules
• KNX PL-Link bus to connect RDG2..KN room thermostats, sensors, and operator units (including bus power)
• Integration of M-bus energy meters directly (integrated mini power supply) or via RS485 level-converter
• Integration of Modbus data points via RTU and/or TCP
• Integration of BACnet MS/TP devices
• WLAN interface for engineering and commissioning
• Operating voltage AC or DC 24 V
• Mounted on standard rails or the wall
• Plug-in screw terminal blocks
• Building X integration
• 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)
• System controller for system networks with PXC3, PXC4, PXC5, PXC7 and DXR controllers over BACnet/IP, BACnet/SC, or BACnet MS/TP
• Integrates data points and/or subsystems via Modbus RTU and/or Modbus TCP
• Integrates MS/TP devices
• Integration of wired M-bus meters via RS485 level-converter or onboard M-bus interface (EN 13757-2):
  • 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 the 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
• Integrated power supply for TX-IO modules
• Integrated AC/DC 24 V power supply for field devices (e.g. actuators and sensors)
• 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 IP (BACnet/IP or BACnet/SC) or BACnet MS/TP, in compliance with the BACnet standard including the 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 hub
• Generic operation via embedded web interface
• Cloud connectivity to Building X for remote access and data points time series
• 2-port Ethernet switch for low-cost cabling
• WLAN interface for engineering and commissioning
• Operating voltage AC 24 V or DC 24 V
• DIN rail or screw mounting
• Plug-in screw terminal blocks

For details about the network and physical setup, refer to the Design Cybersecurity Guidelines.

Type summary

Standardized hardware
PXC7.E400S, M, and L are based on the same hardware and all have the same look and feel. Interfaces like RS485 are enabled and disabled according to the type specification.

Number of digital inputs for potential-free contacts for signalling functions NO or NC (onboard)| 1| 1| 1
Number of BACnet/SC devices connected as nodes| up to 100| up to 100| up to 100
Number of BACnet MS/TP devices in a field-level network| up to 60 3)| up to 120 3)

(2 x 60)

| up to 240 3)

(4 x 60)

Number of KNX PL-Link devices| up to 64| up to 64| up to 64
Number of configurable RS485 interfaces either for integration of Modbus RTU, BACnet MS/TP, or M-bus| 1| 2| 4

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. Depending on the behaviour of the third-party MS/TP devices.

Onboard inputs

• DI Digital inputs for potential-free contacts for signalling functions (NO, NC)

TXM I/O modules

CM2N8173
Super universal module without/with the local operation and LCD| TXM1.8X, TXM1 .8X-ML| CM2N8174
Relay module without/with local operation| TXM1.6R, TXM1.6R-M| CM2N8175
Resistance measuring module (for Pt100 4-wire)| TXM1.8P| CM2N8176
Triac module (only if PXC7.E400 is powered with AC)| TXM1.8T| CM2N8179
Digital input and relay module| TXM1.4D3R| CM2N8188
Power module| TXS1.12F10| CM2N8183
Bus connection module| TXS1.EF10| CM2N8183
Island bus extension module| TXA1.IBE| CM2N8184

1. Module series B and higher. In the following use cases, only series D can be used (available as of 2012):

I/O bus communication mode “Event”

PXC7 can power TXM extension modules (see Interfaces [} 9]).
For further details see PXC4, PXC5 & PXC7 Planning overview A6V13054435 and data sheets.

KNX PL-Link devices

QMX3.P74
Wall-mounted temperature sensor and room operator unit| QMX2.P33| A6V10733768
Wall-mounted temperature and humidity sensor and room operator unit| QMX2.P43
Flush-mounted room sensors base and front modules:

●      Base module for temperature and/or humidity measurement 1)

●      Base module for CO2 measurement 1)

●      Front module for base module without sensor

●      Front module for the base module with temperature sensor

●      Front module for the base module with humidity and temperature sensor

●      Front module for the base module with humidity, temperature sensor, and CO2 indicator LED

| ****

●      AQR2570

●      AQR2576

●      AQR2530NNW

●      AQR2532NNW

●      AQR2535NNW

●      AQR2535NNWQ

| CE1N1411
Passive infrared presence detector| UP 258D12| A6V10489489
Presence detector WIDE with temperature sensor| UP 258D31| A6V11894530
Presence detector WIDE with temperature and humidity sensor| UP 258D41
Presence detector WIDE with temperature, humidity, and CO2 sensor| UP 258D51
Presence detector WIDE with temperature sensor and ultrasound| UP 258D61
Room thermostat with temperature and humidity sensor| RDG200KN RDG260KN| A6V11545853
Room thermostat with temperature, humidity, and CO2 sensor| RDG204KN RDG264KN

1. Physical data points on the base module AQR257.. for use in HVAC functions:

• 2 x Binary potential-free contacts (NO, NC)
• 1 x Passive sensor NTC10K (Type II / Beta (0-50 °C) = 3892 K)
• For details see PXC4, PXC5 & PXC7 Planning overview A6V13054435 and data sheets.

Desigo Control Point

A6V11664137
functionality:| PXM30.E|
7.0 “| PXM40.E|
10.1 “| PXM50.E|
15.6 “|  |
TCP/IP client touch panels with data storage in web server PXG3.Wx00-2:|  | A6V11664139
7.0 “| PXM30-1|
10.1 “| PXM40-1|
15.6 “| PXM50-1|
BACnet/IP web server with standard functionality| PXG3.W100-2| A6V12304192
BACnet/IP web server with extended functionality| PXG3.W200-2|

Technical and mechanical design

| 4| Service button (ID on network and WLAN on/off)
---|---|---
5| 2-port Ethernet switch
 | (with 2 LEDs per port for display purposes)
6| Ethernet port (for future use)
7| Plug-in terminal block with screw terminals
 | KNX PL-Link
8| Plug-in terminal blocks with screw terminals
 | Power supply
9| Plug-in terminal block with screw terminals
 | Digital input
10| Data matrix code
11| Connection for TXM modules (island bus)
12| Plug-in terminal block with screw terminals
 | M-bus
 | Plug-in terminal block with screw terminals
 | (M-bus, Modbus, or MS/TP)
13| COM1 interface
14| COM2 interface
15| COM3 interface
16| COM4 interface
 | Activation of COM 1/2/3/4 depending on Type
 | (S, M, L)
17| DIP switches for bus termination and polarization
 | COM
18| QR code for default WLAN access
 | Description see Technical data [► 8]
19| Date/series and serial number
1| Plastic housing| 20| Slider for mounting on DIN rails
2| Battery cover| 21| Eyelets for cable ties
3| LEDs for communication and state| 22| Holes for wall mounting

LED Displays

Product Documentation

• Related documents such as environmental declarations, declarations of conformity, etc., can be downloaded from the following Internet address: www.siemens.com/bt/download.

Notes

Safety

CAUTION

• National safety regulations
• Failure to comply with national safety regulations may result in personal injury and property damage.
• Observe national provisions and comply with the appropriate safety regulations.

Mounting position and ambient temperature

The devices can be snapped onto standard rails or screwed onto a flat surface. Plug-in screw terminals connect power and interfaces.

Ambient temperature -5…50 °C (23…122 °F)| Ambient temperature -5…45 °C (23…113 °F)
---|---
●      Wall, horizontal

–   From left to right

–   From right to left

| ●      Overhead

●      Wall, vertically

–   From top to bottom

–   From bottom to top

●      On a horizontal surface

  CAUTION

| Risk of overheating due to failure to comply with ambient temperature

Burning and damage to the device

● Ensure sufficient ventilation to comply with the permissible ambient temperature within the panel or installation box. The temperature must be at least 10 K (18° F) lower outside the installation box.

Installation

  WARNING

| Electric shock

Incorrect installation of the device may lead to electric shock injuries when touching the device!

●     Install the device in a lockable cabinet or use terminal covers.

●     Do not install the device in locations where children are likely to be present.

●     Conductors with a cross-section of 0.5 mm2 (AWG24) or greater shall comply with the requirements of IEC 60332-1-2 and IEC 60332-1-3 or IEC TS 60695-11-21.

• This symbol or any other national label indicates that the product, its packaging, and, where applicable, any batteries may not be disposed of as domestic waste. Delete all personal data and dispose of the item(s) at separate collection and recycling facilities under local and national legislation.
• For additional details, refer to Siemens’ information on disposal.

Warranty

• Technical data on specific applications are valid only together with Siemens products listed under “Equipment combinations”.
• Siemens rejects any warranties if third-party products are used.

Technical data

Power supply

Operating voltage AC 24 V (24 V≃, ⏊, )| AC 24 V -15 / +20 % (PELV)

AC 24 V Class 2 (US) 48…63 Hz

---|---
Operating voltage DC 24 V (24 V≃, ⏊, )| DC 24 V -15 / +20 % (PELV)

DC 24 V Class 2 (US)

Functional ground (US) Functional earth| The terminal for the functional ground must be connected on the installation side with the building grounding system (PE).
Screw terminals for wire cross-sections up to| Max. 2.5 mm2 (14 AWG)
Internal fusing| 4 A irreversible / non-replaceable
External supply line fusing (EU)| Non-renewable fuse max. 10 A slow-blow or

circuit breaker max. 13 A

Tripping characteristics B, C, and D per EN 60898 or

Power supply with current limitation of max. 10 A

Protection| Reverse connection protection for DC 24 V

Power consumption (for transformer/power supply planning)

Base load (without loading by I/O modules TXM, KNX PL-Link, M-bus, and field devices)| 15.4 VA / 0.64 A| 7.8 W / 0.33 A
I/O modules TXM supply| 15 VA / 0.6 A| 8 W / 0.3 A
KNX PL-Link supply| 4 VA / 0.17 A| 2.2 W / 0.09 A
M-bus supply| 3 VA / 0.13 A| 1.7 W / 0.07 A
Field device supply V~| Max. 2 A, total of the connected field devices

< 48 VA / 48 W

Function data

Hardware information

Processor| NXP i.MX8 QuadXPlus, 1.2 GHz
Storage| 2 GByte RAM

8 GByte eMMC

Data backup in the event of power failure

Energy reserve (supercapacitor) to support real-time clock (7 days).

Energy reserve to support real-time clock can be extended using optional battery BR2032: depending on the lifetime of the battery and use, typically 10 years.

(Battery safety requirement and specification for BR2032 according to IEC 60086-4 or UL1642. The battery must be rated for ambient temperature 85 °C (185 °F))

Low power of the battery will be indicated by an LED and a system alarm will be generated.

Data available if stored to flash memory: Every 5 minutes.

The interval of 5 minutes is only valid for the change log but not for trends. In case of a power failure, trend log data can be lost up to 30 minutes.

Interfaces

Ethernet interface

Plug| 3 x RJ45, shielded
Interface type| 10Base-T / 100Base-TX, IEEE 802.3 compatible
Bit rate| 10/100 Mbps, autosensing
Protocol| BACnet/IP on UDP/IP, BACnet/SC on TCP/IP, and HTTPS on TCP/IP
Cabling (in-house cabling only), cable type| 10 Mbps: Min. CAT3, shielded cable is recommended 100 Mbps: Min. CAT5, shielded cable is recommended
Cable length| Max. 100 m (330 ft)

The COM interfaces can be used either for M-bus, Modbus or for MS/TP, according to type and configuration.

M-bus interface on COM interface (RS485)

Interface type| EIA-485, electrically isolated
Baud rate| 300, 600, 1200, 2400, 4800, 9600, 19200, 38400.

The maximum baud rate depends on the configuration of M-bus-S devices (subordinate devices) and the M-bus repeater.

Internal bus termination| 120 Ohm, switchable with a DIP switch
Internal bus polarization| 270 Ohm pull-up/pull-down resistances, switchable with DIP switch
Cabling (in-house cabling only) Cable length| 3-wire cable, shielded cable recommended (shield must be connected to building earth in the mounting panel)

Max. 1000 m (3300 ft)

Protection| Short-circuit proof

Protection against faulty wiring with AC 24 V and DC 24 V

M-bus level converter including power supply (required)| Configuration examples (simple M-bus loads à 1.5 mA):

●      Up to 2 M-bus devices: STV Electronic, MPW-2 1

●      Up to 6 M-bus devices: STV Electronic, MPW-6 1

●      Up to 60 M-bus devices: Relay GmbH, PW60 1

●      Up to 250 M-bus devices: Siemens, WTX631- GA0090

• For STV Electronic level converters, refer to https://www.stv-electronic.de/. For Relay GmbH level converters, refer to https://www.relay.de/.
• The use of these products is a recommendation only. Siemens cannot guarantee functionality nor take over any warranty for third-party products. This information is subject to change without notice.

Modbus RTU interface

Interface type| EIA-485, electrically isolated
Baud rate| 300, 600, 1200, 2400, 4800, 9600, 19200, 38400,

57600, 76800, 115200 (depending on the configuration)

Internal bus termination| 120 Ohm, switchable with a DIP switch
Internal bus polarization| 270 Ohm pull-up/pull-down resistances, switchable with DIP switch
Cabling (in-house cabling only) Cable length| 3-wire cable, shielded cable recommended (shield must be connected to building earth in the mounting panel)

Max. 1000 m (3300 ft)

Protection| Short-circuit proof

Protection against faulty wiring with AC 24 V and DC 24 V

BACnet MS/TP interface

Interface type| EIA-485, electrically isolated
Baud rate| 9600, 19200, 38400, 76800, 115200 (depending on the configuration)
Internal bus termination| 120 Ohm, switchable with DIP switch
Internal bus polarization| 270 Ohm pull-up/pull-down resistances, switchable with DIP switch
Cabling (in-house cabling only) Distance between 2 devices Length of the MS/TP line| 3-wire cable shielded Max. 500 m (1650 ft)

Max. 1000 m (3300 ft)

Protection| Short-circuit proof Protection against faulty wiring with AC 24 V and DC 24 V
WLAN interface

Interface type| Wireless access point
Supported standards Frequency band WLAN channels

Maximum radio-frequency power

| IEEE 802.11b/g/n 2.412…2.462 GHz

1…11

16.4 dBm

Distance (unobstructed field)| Min. 5 m (16 ft)
Device pairing| Activation/deactivation with service button

Automatic switch off after 10 minutes if no WLAN client is connected.

Optionally, for cyber security reasons, the WLAN can be permanently disabled via configuration.

Default SSID and WLAN password : Scan the QR code.

It will display something like WIFI:S: PXC7.E400_0000550 ;T:WPA;P: 1400052738 ;; Then SSID = PXC7.E400_0000550 and password = 1400052738

Determine manually: Use the information from the Date/Series/SN block It will display something like: Date/Series: 20210423 0000550

S/N: 1400052738

SSID = _ and password = <S/N>

M-bus manager with integrated power supply

Interface type| M-bus manager according to EN 13757-2 for max.

7.5 mA, galvanically isolated

Max. 4 M-bus meters as subordinates (4 simple M-bus loads à 1.5 mA)

Baud rate| 300, 2400 (default), 9600.

The maximum baud rate depends on the M-bus device configuration and the M-bus repeater.

Cabling (in-house cabling only) Cable length| 2-wire cable, interchangeable according to M-bus standard

Max. 100 m (330 ft)

Protection| Short-circuit proof

Protection against faulty wiring with AC 24 V and DC 24 V

M-bus level converter used as repeater (optional) to extend the number of connected M-bus-S devices| Configuration examples (simple M-bus loads à 1.5 mA):

●      Up to 60 M-bus-S devices: WTV531-GA5060

●      Up to 250 M-bus-S devices: WTX631.GA0090

ABT Site checks the number of data points and not the number of M-bus-S devices. The max. number of devices per network depends on the individual load of each device and the given power supply by the M-bus manager (PXC4/5/7) or converter.

KNX PL-Link interface

Type| KNX TP1 PL-Link, galvanic isolation Baud rate: 9.6 kbps
Cabling (in-house cabling only)

Cable length

| 2-wire cable, 0.75 mm2 / AWG20 or 1 mm2 / AWG18

With internal supply: Max. 80 m (262 ft) With external supply: Max. 1000 m (3300 ft)

Internal bus power| Max. 50 mA When using external bus power for KNX PL-Link, switch off the internal bus power via the ABT Site Tool.
I/O modules TXM bus interface

Nominal voltage| DC 24 V
Supply current for I/O modules TXM| Max. 300 mA
Connectable in parallel with DC 24 V power supply module TXS1.12F4| For details, see: TX-I/O- engineering and installation, CM110562
Protection| Short-circuit proof
TXM I/O module plug: No protection against faulty wiring with AC 24 V| No electric protection. Use cover
Field device supply (I/O module TXM)

AC 24 V output current (terminal V~ on the TXM module)| Max. 2 A, short- circuit proof (only if PXC7 is powered by AC voltage)

If PXC7 is powered by DC voltage, the field device supply on terminal V~ of the TXM modules is also DC voltage.

Screw terminals, plug-in

Cu-wire or Cu-strand with wire end sleeve| 1 x 0.6 mm ∅ to 2.5 mm2 (22 to 14 AWG)

or 2 x 0.6 mm ∅ to 1.0 mm2 (22 to 18 AWG)

Cu-strand without wire end sleeve| 1 x 0.6 mm ∅ to 2.5 mm2 (22 to 14 AWG)

or 2 x 0.6 mm ∅ to 1.5 mm2 (22 to 16 AWG)

Stripping length| 6…7.5 mm (0.24. 0.29 in)
Screwdriver| Slot screws, screwdriver size 1 with shaft ø = 3 mm
Max. tightening torque| 0.6 Nm (0.44 lb-ft)

Conformity

Ambient conditions and protection classification

Classification as per EN 60730 Automatic action

Control function Pollution degree

Overvoltage category

| ****

Type 1 Class A 2

I

Protection against electric shock| Protection class III
Protection degree of housing to EN 60529 Front parts in DIN cut-out

Terminal part

| ****

IP30 IP20

Climatic ambient conditions

●      Storage / Transport (packaged for transport) as per IEC EN 60721‑3‑2

●      Operation as per IEC/EN 60721-3-3

| ****

●      Class 1K22 / 2K12

Temperature -25…70 °C (-13…158 °F)

Air humidity 5…95 % (non-condensing)

●      Class 3K23

Operation in enclosed dry locations, having no temperature or humidity control

Temperature -5…50 °C (23…122 °F)

(for details see chapter Mounting)

Air humidity 5…95 % (non-condensing)

Mechanical ambient conditions

●      Transport per IEC/EN 60721-3-2

●      Operation as per IEC/EN 60721-3-3

| ****

●      Class 2M4

●      Class 3M11

Standards, directives, and approvals

Product standards| IEC/EN 60730-1
Product family standard| IEC/EN 63044-x
Electromagnetic compatibility (EMC)| For residential, commercial, and industrial environments
EU conformity (CE)| See CE declaration 1)
UK conformity (UKCA)| See UK declaration 1)
EAC conformity| Eurasian compliance
RCM conformity| See RCM declaration 1)
UL/cUL certification (US / Canada)| UL916, http://ul.com/database

UL94, housing material meets classification V-0 2)

CSA certification| C22.2, http://csagroup.org/services- industries/product- listing
FCC| CFR 47 Part 15C
BACnet| Profile: B-BC Revision: 1.16

Detailed information on BACnet certificates, BTL listings, and PICS can be found on the BACnet website (filtered for Siemens products)

AMEV profile (BACnet 2017)| AS-B
KBOB profile (BACnet 2017)| AS-CH 3)
Environmental compatibility 1)| The product environmental declaration 1) contains data on environmentally compatible product design and assessments (RoHS compliance, materials composition, packaging, environmental benefit, disposal).
OSHPD seismic certification| The product meets OSHPD Special Seismic Certification Preapproval (OSH-0217) under California Building Code 2022 (CBC 2022)4)

1. Documents can be downloaded at www.siemens.com/bt/download.
2. Material level
3. AS-CH pending
4. When installed within the following Siemens enclosures: PXA-ENC18, PXA-ENC19, or PXA-ENC34.

European Union conformity
Contact for regulatory topics: (EU) Siemens AG, Berliner Ring 23, DE-76437 Rastatt
United Kingdom conformity assessed
Contact for regulatory topics: (GB) Siemens plc, Sir William Siemens House, Princess Road, Manchester, M20 2UR

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, according to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used under the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and
2. this device must accept any interference received, including interference that may cause undesired operation

FCC Caution: Changes or modifications not expressly approved by Siemens Switzerland Ltd. could void the user’s authority to operate the equipment. United States representative https://new.siemens.com/us/en/products/buildingtechnologies/home.html
Industry Canada statement
This device complies with ISED’s license-exempt RSSs. Operation is subject to the following two conditions:

1. This device may not cause interference, and
2. This device must accept any interference received, including interference that may cause undesired operation.

Radiofrequency radiation exposure statement
This equipment complies with FCC and IC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20 cm between the radiator and your body.
This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter.

Housing

Connection terminals

building grounding system (PE)).
10, 11| D, ⏊| Digital input
Term| on, off| Switch for bus termination
Polar| on, off| Switch for polarization
66, 67| MBUS| M-bus interface
68, 69, 70| COM1| Interface EIA-485 (M-bus, Modbus RTU, BACnet MS/TP) Remark: Activation of COM1/2/3/4 depending on Type (S, M, L)
71, 72, 73| COM2
74, 75, 79| COM3
77, 78, 79| COM4
Right side of device|  | Interface for connecting TXM I/O modules

Dimensions

• All dimensions are in mm and inches.

PXC7

PXC7 with four TXM modules

CONTACT

• Issued by
• Siemens Switzerland Ltd
• Smart Infrastructure
• Global Headquarters
• Theilerstrasse 1a
• CH-6300 Zug
• +41 58 724 2424
• www.siemens.com/buildingtechnologies.

© Siemens 2022 Technical specifications and availability subject to change without notice.

References

• Product Sourcing and Certifications Database | UL Solutions
• Building technology - Siemens Global
• Smart Information Delivery
• Smart Information Delivery
• Building Technologies - Siemens USA
• M-Bus Master, Slaves und M-Bus Zubehör - made in Paderborn - Relay GmbH
• Home - STV-Electronic

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