compatible devices Highlights • Direct link to EIB/KNX (two-wire) • Link to Modbus RTU (RS-485 or RS-232) • Read & write values from electric meters, electricity supply systems, etc. • Support for all major Modbus Function codes: Read Coils, Read Discrete Inputs, Read Holding Registers, Read Input Registers, Write Single Coil Write Singl Register, Write Multiple Coils, Write Multiple Registers • Cyclic polling of the slaves • Each KNX Modbus Gateway can transfer up to 300 measured values • Up to 30 Modbus devices (at RS-485) can be connected to each KNX Modbus Gateway • KNX status message in case of a Modbus Slave failure • Simple parametrization via USB and b+b Terminal software • DIN rail housing (6TE = 105mm) with integrated 100V - 240V wide range power supply Description The KNX Modbus Gateway is used for communication between the EIB/KNX bus and Modbus compatible meters, power analyzers, etc. The gateway assumes the role of the Modbus Master, i.e. it controls communication. The gateway provides a bidirectional connection. Data from the Slaves can be read either in cycles at certain intervals or on request by the EIB/KNX bus system. The most important function codes for read and write access are supported. For example, consumption values can be used as an integer or transferred as a floating point value to the EIB/KNX bus. Different data formats can be set for each measured value. Furthermore, it is possible to scale the process values (multiplication/division). Parametrization and diagnosis is performed through the integrated USB interfaces in connection with our b+b Terminal software. The gateway hardware consists of a 6TE (=105 mm) wide rail mounting housing with integrated 100V - 240V power supply and connections for Modbus & EIB/KNX. The device is maintenance-free without fan or any other wear parts. Fields of application • Integration of Modbus slaves for the professional performance-, power- and energy-analysis • Easy integration of Modbus RTU slave in EIB/KNX -systems • Read current process values of Modbus slaves • Visualization of energy consumption in the EIB/KNX installation Interfaces present • EIB/KNX 2-wire connection through standard EIB/KNX bus terminal • USB connection through Mini USB socket • Modbus connection through screw terminals (RS-485) and Sub-D (RS-232) • Modbus data rate of 1,2kBit/s to 38,4kBit/s Contents of delivery • KNX Modbus Gateway • USB cable for parametrization/diagnosis • b+b Terminal Software • Documentation errors and omissions excepted b+b Automations- und Steuerungstechnik GmbH Beerfelden Site I ■ DieselstraBe 18 ■ Airlenbach Site II ■ EichenstraBe 38a ■ 64760 Oberzent (Germany) phone: +49 (0) 6068 9310-0 ■ fax: +49 (0) 6068 9310-99 [email protected] ■ www.bb-automation.com