Datalogic STAR Modem Manual do Utilizador Página 10

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STARModem™
4
2.1.2 STAR-System™ Mode
In STAR-System™ mode, STARModem™ uniquely provides a wireless
bi-directional communication between the Host and the RF devices.
STARModem™ 1 in the figure below is a Server (receiver) to the RF Devices and
also a Client (transmitter) to STARModem™ 2, which receives data for the printer.
This mode is only for RS232 communication.
STAR-System™ uses the Narrow Band RF radio and Datalogic CSMA/CA protocol
to automatically link and manage all the RF devices in the system. This protocol
manages the data transmission using a 16-bit CRC checksum. All RF devices in the
system must implement the CSMA/CA protocol and therefore be configured using
the STAR-System™ setup procedure (refer to STARModem™ and the RF devices
in the figure below).
Figure 3 – STAR-System™ Mode
To configure the modem for operating in this mode refer to par. 3.3.
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