Gateway Modbus Ethernet

  • Ethernet interface between a ZigBee network and the external environment
  • Using the Modbus/TCP-IP protocol
  • Coordinator function for a ZigBee network
  • Local memory stores battery powered sensors data
  • Transparent bridge towards other Modbus devices
  • External antenna
  • Power over ethernet (POE) version


Ethernet Modbus Gateway

The Ethernet Gateway Modbus – ZigBee ZC-GW-ETH-xx is part of an assortment of 4noks ZigBee devices. The purpose for which it was created is to interface a PLC (Programmable Logic Control) or a PC with the 4-noks ZigBee devices network through an Ethernet network and a standard protocol universally recognized such the Modbus/TCP-IP.

The employment of an Ethernet network allows to locate the Personal Computer or the PLC in a position very far from the ZigBee network and, if you have an Internet access, into an even farther position.

The gateway, for what concerns the ZigBee network, is one of the available coordinating type devices. This means that it has an active function in the network creation and in keeping the radio traffic between the ZigBee network devices. Moreover, they can work as “father” devices for battery powered sensors and can memorize the information that they asynchronously transmit compared with the ModBus interrogations.
Along with the ZR-BR-485-EM device, this gateway offers a transparent Modbus channel. The version coded ZC-GW-ETH-EPM is powered through the 48Vcc present on the Ethernet cable connectors (POE power supply), while the version with code ZC-GW-ETH-EM is powered by a 12Vcc external source.

Technical Specs
General characteristics
EM2420 Ember Chip
Compatible IEEE 802.15.4 Stack
EmberZnet 3.5.x (ZigBee PRO)
Ethernet Interface DIGI Connect ME model
Addressing through WEB or DHCP interface
RF characteristics Frequency: 2405 MHz ÷ 2480 MHz
Modulation: DSSS
Nominal transmission power: 1mW (0 dBm)
Receiver sensitive: -92 dBm
External antenna gain: 5,5 dB
Outdoor/indoor range: 100m/30m
Supply ZC-GW-ETH-EM: external +12 Vcc ; 200mA
Connections Ethernet: RJ45
Environment Parameters Operating temperature: -10 ÷ +60°C; <80% U.R. non condensing
Storage temperature: -20 ÷ +70°C; <80% U.R. non condensing
Degree of protection: IP 50
Compliant with 2006/95/EEC, 89/336/EEC, 99/5/EEC directives
Product law applied
ETSI EN 300 328: Radio Compatibility for digital 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 Security