Datalogic DS4300 Manual de instalación Pagina 27

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DS4300 DATALOGIC
2.12
- Installation
RS485 Full-Duplex
The RS485 full-duplex interface is used for non-polled communication
protocols in point-to-point connections over longer distances than those
acceptable for RS232 communications or in electrically noisy environments.
The following pins of the 25-pin connector are used for RS485 full-duplex
communications:
Pin Name Function
2 TX485+ RS485 transmitted data +
4 TX485- RS485 transmitted data -
3 RX485+ RS485 received data +
5 RX485- RS485 received data -
7 SGND Main signal ground main interface
DS4300
USER INTERFACE
7
SGND Main
TX485+
2
TX485-
4
RX485+
3
RX485-
5
RX485
TX485
RS485REF
Figure 2.15 - RS485 full-duplex connections
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