User guide

Appendix Chapter 13
136 VideoJet 10
COM1: RS232/485 interface
Options for using the serial interface COM1: RS232/485 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 standard. The standard used depends on the current configuration
(see page 66).
The pin assignments depend on the standard 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 Standard RS422/485 Standard
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– –