Specifications
Spacelogic RP-C-EXT-KNX
Introduction
SpaceLogic™ RP-C-EXT-KNX KNX Modbus gateway connects to the SpaceLogic RP controllers and provides an interface between the controller and KNX devices such as push-buttons, sensors, and control units for lights, blinds, and room temperature.
The KNX Modbus gateway allows bi-directional control and monitoring of all parameters and functions of the connected KNX devices, which can be used to control lights and blinds in a room.
The KNX Modbus gateway is a Modbus to KNX interface that connects to one of the RP controller's configurable RS-485 ports. The KNX Modbus gateway provides a galvanic isolation between the KNX bus and the RP controller Modbus (RS-485) network.
The KNX Modbus gateway can be programmed through the ETS© software for installation, configuration, and commissioning of KNX devices. The assignment of KNX objects to Modbus registers is configured through parameters in the ETS product database.
The KNX Modbus gateway supports KNX long frames.
The KNX Modbus gateway is designed for installation on a DIN rail with a width of 1 unit (18 mm or 0.7 inch).
The KNX Modbus gateway has two push-buttons and three LEDs on the front to enable local operation of the device and status indication.
The KNX Modbus gateway can be used with a standard Schneider Electric KNX power supply to power the KNX devices on the KNX bus.
Features
The KNX Modbus gateway has the following features:
Up to 250 KNX data points (10 KNX devices) can be connected to the KNX Modbus gateway
Power and data communication through the RP controller Modbus (RS-485) network
Configuration through EcoStruxure Building Operation software
Programming through ETS© software
KNX long frames are supported
Designed for DIN rail installation
Push-buttons for synchronization (write) and read of all KNX group objects
Status LEDs for device mode, KNX bus, and Modbus communication
The RP controller has two RS-485 ports, which can be configured for different types of networks. When configured for Modbus communications, the RP controller also provides 24 VDC power supply to the KNX Modbus gateway through the RS-485 interface.
The Modbus RTU protocol is used for the RP controller Modbus network. RS-485 is the electrical interface.
The KNX Modbus gateway has two 3-position pluggable screw terminal blocks for connection to the RP controller Modbus (RS-485) network. The RP controller's RS-485 ports are RJ45 ports.
Maximum one KNX Modbus gateway can be connected to each RP controller.
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Product |
Part number |
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RP-C-EXT-KNX
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SXWREKNX10001
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Specifications
| Electrical | |
DC input supply voltage
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24 VDC
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Powered by the RP controller
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Maximum power consumption
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<0.24 W from the KNX bus
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<0.24 W from the RP controller
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|
| Environment | |
Ambient temperature, operating
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-5 °C to +45 °C (23 °F to +113 °F)
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Ambient temperature, storage
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-25 to +70 °C (-13 to +158 °F)
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Humidity
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5 to 93 % RH non-condensing
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| Material | |
Ingress protection rating
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IP 20
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| Mechanical | |
Dimensions
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18 W x 90 H x 60 D mm (0.7 W x 3.5 H x 2.4 D in.)
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Weight
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50 g (1.76 oz)
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Installation
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DIN rail
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| Software requirements | |
EcoStruxure Building Operation software
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version 3.2 and later
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ETS® software
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version 5 and later
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RP controller firmware
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version 3.02 and later
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| Agency compliances | |
Emission
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BS/EN 61000-6-3:2007 + A1:2011; BS/EN 50491-5-2:2010
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Immunity
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BS/EN 61000-6-2:2005; BS/EN 50491-5-3:2010
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Safety standards
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IEC/BS/EN 63044-3:2018
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| RP controller Modbus communications | |
Communication protocol (configurable)
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Modbus RTU
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Electrical interface
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RS-485
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Maximum total length of the RP controller Modbus (RS-485) network: 72 m (236 ft)
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| KNX bus communications | |
Transmission media
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Twisted pair (TP)
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Maximum APDU length
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55
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Device model
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System B
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| Hardware | |
CPU type
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ARM Cortex-M0+ single-core
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Frequency
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14.7456 MHz
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SRAM (embedded)
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32 KB
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Flash memory (embedded)
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256 KB
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Status indicator
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LED (green and red) that shows the KNX communication status
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LED (green and red) that shows the Modbus RTU communication status
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LED (green and red) that shows the device mode (operating or programming mode)
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One LED (red) for programming mode
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Buttons
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One push-button for synchronization of KNX objects (writing all KNX group objects)
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One push-button for reading all KNX group objects
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One button for programming mode
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Connectors
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4-conductor KNX connectors with PUSH WIRE® connection, 2-pole, dark gray/red
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Terminal blocks
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3-position pluggable screw terminal block for power supply from the RP controller
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3-position pluggable screw terminal block for Modbus communication with the RP controller
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Wire cross-sectional area: 0.34 to 2.5 mm
2
(22 to 14 AWG)
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|
Connections, LEDs, and Buttons
Supported KNX Datapoint Types
The KNX Modbus gateway supports a limited set of KNX datapoint types. Details can be found in the information below.
For more information, see SpaceLogic - RP-C-EXT-KNX Reference Guide .
For more information, see ETS Database for the KNX Modbus Gateway .
SpaceLogic RP-C Advanced
ETS Database for the KNX Modbus Gateway