User Manual

www.moxa.com [e-mail] 68
2009 Industrial Wireless Guidebook
Cellular Networks
3
Benefits of Using Active GPRS I/O
Moxa’s W5340 Active GPRS I/O devices come equipped with 4 analog inputs, 8 software configurable DI/
Os, and 2 relay outputs. In addition, the built-in GPRS communication, front-end intelligence, and data
logging function give users the advantage of a highly integrated solution. The W5340 also features a 3-in-1
serial port (RS-232/422/485) for connecting field serial devices such as instruments or meters. The benefits
of using Active GPRS I/O include:
A cost-effective solution for GPRS telemetry applications.
The best choice for solving the dynamic IP issue: whether the IP is public or private, dynamic or static.
Easy installation: with Active OPC’s support, the W5340 can push IP addresses and I/O status to
Active OPC server.
Flexible Event Handling thanks to the Click&Go logic inside.
Rich Alarm functions: SMS, SNMP trap, and e-mail.
Lower bandwidth consumption: push architecture reduces bandwidth by 80% compared to the polling
architecture.
Faster response time because of push technology and event handling
Data Logging: Local data logged to SD card and pushed to host by TFTP.
Conclusion
Remote monitoring and alarm systems used in water distribution, pipeline management, and environmental
monitoring applications must be capable of covering a wide area and function reliably. Most importantly, the
cost must be affordable. A remote monitoring and alarm solution with Moxa’s Active GPRS I/O devices and
Active OPC Server help users overcome the frustrations associated with using dynamic IP addresses, and
makes it extremely easy to connect to SCADA systems.
Reference:
[1] http://en.wikipedia.org/wiki/SCADA
[2] http://www.citect.com/index.php?option=com_content&view=article&id=1502&Itemid=1366
[3] How to put SCADA on the Internet, http://www.controleng.com/article/CA321065.html
[4] OPC & DCOM: 5 Things You Need to Know, www.opcti.com