MPCS: A Wireless Communication Protocol for Ubiquitous Industrial Environment - Advanced Research on Computer Education, Simulation and Modeling - page 407

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Fig. 1. System Architecture of System

3 ZigBee

3.1 ZigBee in Industrial Environment

There are thousands of devices in a factory, such as, PLC, HMI, IPC, smart sensor,
and so on. ZigBee is focused on control and automation. ZigBee standards have a
characteristic of "three low" of low electricity consumption (year's cell life), low cost
(less than $5) and low data rate (250 Kb/s). [6-7] ZigBee works with small packet
devices and supports a larger number of devices and a longer range between devices
than other technologies. ZigBee devices can form mesh networks connecting hun-
dreds to thousands of devices together. Devices use very little power and can operate
on a cell battery for many years. In timing critical applications, such as industrial
application, ZigBee is designed to respond quickly. ZigBee is a good wireless tech-
nology in industrial application.

3.2 ZigBee Gateway Designation

The ZigBee gateway is based on the CC2530 System-on-Chip, which combines a RF
transceiver with an industry-standard enhanced 8051 MCU, in-system programmable