Fieldbus & Industrial Networking


High performance cellular IP gateway for power system automation

August 2014 Fieldbus & Industrial Networking

Moxa has introduced the 1-port RS-232 OnCell G3111 and the RS-232/422/485 OnCell G3151 intelligent GSM/GPRS industrial cellular IP gateways. These new products empower system integrators with a versatile and robust cellular solution for power system automation applications, such as automatic meter reading (AMR). The features of the OnCell G3111/G3151 have been designed to deliver high reliability and value, while helping system integrators keep operational costs low.

Both devices are equipped with a full TCP/IP architecture, enabling simple transparent cellular connections to legacy devices over TCP/IP networks. The OnCell G3111/G3151 not only provides multiple operation modes, including TCP server, TCP client and UDP, but also offers the flexibility of three types of GSM/GPRS connection modes: Always ON, Inactivity Timeout and Remote Host Recovered.

Many cellular ISPs only provide private IPs for their customers and this IP address can change frequently. This is a substantial system management hurdle as the connection between the host and device is broken unless the IP address is reconfigured in the cellular IP gateway. The OnCell Central Manager software included with the G3111 and G3151 greatly simplifies system management by solving this private IP issue. As long as the control centre is connected to the Internet, it can connect to remote metering devices; remote devices configured with a private IP address such as AMR meters can access resources on the Internet and can be managed or accessed directly on a private network or over the Web.

The OnCell G3111 and G3151 cellular IP gateways are compact, and can be used on a desktop or mounted on a DIN-rail. The products come with flexible 12-48 VDC power input and 2 kV EFT/surge protection to accommodate whatever field power sources are available. The serial ports of the OnCell G3111/G3151 are protected by 15 kV ESD line protection to keep the system safe from unexpected electrical discharges.



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