User's Manual

IOVU-210AD-RK39 Panel PC
Page 17
3.3.3 Serial Interfaces
The system has an RS-232 and an RS-232/422/485 serial port connector. Pinouts of the
two connectors are shown in the following two tables.
Pin Arrangement Pin Description
1 RS-232_DCD1
2 RS-232_RXD1
3 RS-232_TXD1
4 RS-232_DTR1
5 GND
6 RS-232_DSR1
7 RS-232_RTS1
8 RS-232_CTS1
9 RS-232_RI1
Table 3-4: RS-232 Serial Port (COM1) Pinouts
Pin Arrangement Pin RS-232 RS-422 RS-485
1 RS-232_DCD2 RS-422_TX- RS-485_TX-
2 RS-232_RXD2 RS-422_TX+ RS-485_TX+
3 RS-232_TXD2 RS-422_RX+
4 RS-232_DTR2 RS-422_RX-
5 GND
6 RS-232_DSR2
7 RS-232_RTS2
8 RS-232_CTS2
9 RS-232_RI2
Table 3-5: RS-232/422/485 Serial Port (COM2) Pinouts