Vaisala WMS302 Guía de usuario Pagina 33

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Chapter 2 __________________________________________________________ Product Overview
VAISALA_______________________________________________________________________ 31
0403-106
Figure 14 Communication Module DSU232
RS-485 Modules
Introduction to DSI485A
0403-107
Figure 15 Isolated Communication Module DSI485A
DSI485A is an isolated communication module for providing the 2-wire
or 4-wire RS-485-communication link between two devices with a
similar interface. The DSI485A module is used, for example, for
connecting displays and terminals to the data logger when the distance
is longer than 15 meters. The maximum distance for DSI485A is
approximately 1500 meters at full speed. The DSI485A module must be
configured before using it in order to work as desired.
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