VCS VIP 10, Руководство пользователя

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Appendix Chapter 13
110 VIP 10
RS232/485 interface
Options for using the serial interface include transparent data transfer, control of
connected devices or operation of the unit with a terminal program. Depending
on the setting, the interface works with the RS232 or RS422/485 protocol. The
protocol used depends on the current configuration (see page 56).
The pin assignments depend on the protocol used.
Note
For RS422/RS485 pin assignment is also possible for 2-wire connection.
– Connect the TxD+ with the RxD+. TxD+ then is equivalent to DATA+.
– Connect the TxD- with the RxD-. TxD- then is equivalent to DATA-.
Pin RS232 Protocol RS422/485 Protocol
1 – –
2 RxD (receive data) RxD+ (receive data plus)
3 TxD (transmit data) TxD- (transmit data minus)
4 – –
5 GND (ground) GND (ground)
6 – –
7 RTS (ready to send) TxD+ (transmit data plus)
8 CTS (clear to send) RxD- (receive data minus)
9 – –