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IM 04L51B01-41EN
Overview and Specifications
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App
1.1
Overview
Wireless communication (900 MHz band) enables data communication between
coordinators (GX20/GP20/GM10 (/CM2)) and routers (GM10 (/CS2), UT), wireless sensors
(GX70SM). Because routers are equipped with a repeater function, they can be used to
extend the communication distance.
Coordinator
Router
Router
Router
Router
Even when wireless communication is cut
off, the most suitable communication route
is automatically selected.
* Multi-hop
Wireless sensor
(GX70SM)
Features
• A single coordinator can accommodate up to 100 routers.
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This is limited to 99 for the UT.
In the case of the wireless sensor (GX70SM), up to 96 routers can be connected by
connecting four repeaters to a coordinator (wireless module version V 4.2.0 or later, GX/
GP/GM release number 4.02 or later).
• The output larger than that of conventional specified low power radio achieving a range of
about 800 m
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with a clear line-of-sight.
• With multi-hop connection, even when wireless communication is cut off due to temporary
deterioration in radio conditions, the most suitable communication route is automatically
selected to resume wireless communication.
GM10 routers (/CS2 option) and UT routers can be used as repeaters to extend
communication distance and improve radio quality.
• Features of the 900 MHz band (compared to the 2.4 GHz band)
• Because the radio frequency is low, radio signals attenuate less in the transmission
route.
• Because the radio frequency is low and the tendency to go straight is lower, the radio
signals can more easily diffract around obstacles.
• No license is required.
1 The number of units (include repeaters) that can connected may be limited by the
communication data size or the transmission interval.
When used for low-speed moving bodies, the maximum number of routers is limited to 50
including repeaters.
2 The range depends on the operating environment.
Advantages
• Wiring costs can be reduced when floor layout is changed.
• Addition of and changes to measurement points can easily be accommodated.
• Because the communication is wireless, routers, sensors, and the like can be installed in
low-speed moving bodies to enable communication between them.
Chapter 1
Overview and Specifications
