ModBus Wireless Bridge

  • Connecting Modbus devices to the ZigBee network
  • Using Modbus/RTU protocol and RS485 interface
  • Routing function
  • RF power 10mW
  • External antenna
  • Din-Rail version also available ZR-BR.D-EM

The Bridge has the main function to connect through a ZigBee network one or more Modbus slave devices equipped with RS485 interface to one of the Gateways of the 4-noks products family. In this way the BMS/PLC/SCADA System or our Data Loggers connected to the Gateway can communicate with Modbus slave devices eliminating any hard wired installation. This communication link is completely transparent. Furthermore it can be a repeater and a parent device for battery powered sensors.

General characteristics
Chip Ember EM2420
Compatible IEEE 802.15.4
Stack EmberZnet 3.5.x (ZigBee PRO)
RF characteristics
Frequency: 2405 MHz ÷ 2480 MHz
Modulation: DSSS
Nominal transmission power: 1mW (0 dBm)
Reception sensitivity: -92 dBm
Extern antenna Gain: 5,5 dB
Coverage outdoor/indoor: 100m/30m
12-24 Vcc/Vca (±10%); 100mA; 50/60Hz
Supply: pull out terminals (3,81 mm pitch)
RS-485 interface: extraction clamps (pitch 3.81 mm)
Environment parameters
Operating temperature: -10 ÷ +60°C; <80% U.R. not condensing
Storage temperature: -20 ÷ +70°C; <80% U.R. not condensing
Degree of protection: IP 55
Compliant with 2006/95/EEC, 89/336/EEC, 99/5/EEC
directives Reference Norms
ETSI EN 300 328: Radio Compatibility for digitals wide band transmissions ETSI EN 301 489: Radio Compatibility
EN 61000-6-2: Electromagnetic Compatibility – Emissions
EN 61000-6-3: Electromagnetic Compatibility – Immunity
EN 60950-1: Electric Safety