The KNX Modbus gateway (RP-C-EXT-KNX) is equipped with two 3-position pluggable screw terminal blocks for connection to the RP-C Modbus (RS-485) network and a 2-pole PCB connector for connection to the KNX bus.
This section provides recommendations on wire sizes and lengths for the KNX Modbus gateway (RP-C-EXT-KNX).
This section provides recommendations on minimum wire sizes (cross-sectional areas) and maximum wire lengths for the wires connected to the screw terminals of Central IO modules, AS-B servers, RP and MP controllers, and IP-IO modules. Recommendations on minimum wire size and maximum cable length for the digital inputs of the RP controller expansion modules, the DALI bus of the DALI light modules, the SMI Interface of the SMI blind modules, the Zigbee DALI and 0-10V modules, and the KNX Modbus gateway are also provided. The recommendations are for guidance only. Other wire sizes and lengths may be used, depending on wiring rules and when appropriate.
The RP controller Modbus RTU (RS-485) subnetwork allows standard Modbus devices and the KNX Modbus gateway (RP-C-EXT-KNX) to be connected to the controller. An adapter is required for converting the controller RS-485 Com port with RJ45 interface to screw terminals.
The Schneider Electric SpaceLogic hardware devices for the EcoStruxure BMS include terminal bases, PS-24V power supplies, Central IO modules, automation servers such as AS-P servers and AS-B servers, BACnet/IP devices such as MP-C controllers, MP-V controllers, IP-IO modules, and RP-C controllers, RP controller expansion modules, remote control, KNX Modbus gateway, Bluetooth adapter, Wireless Adapter - Advanced, SpaceLogic Sensor devices, Advanced Display devices, and Operator Display devices.
The KNX Modbus gateway RP-C-EXT-KNX connects to the RP-C 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.
You install a KNX Modbus gateway (RP-C-EXT-KNX) on a DIN rail to properly fasten the device and to allow for sufficient ventilation.
There are two push-buttons on the front of the KNX Modbus gateway (RP-C-EXT-KNX) and one button above the front. The buttons are used to activate or deactivate various modes.