Acnodes PC 5170 User Manual page 157

CN20A: Serial Port DB-9 Male Connector (COM1)
PIN Description
1 DATA CARRIER DETECT (DCD)
2 RECEIVE DATA (RXD)
3 TRANSMIT DATA (TXD)
4 DATA TERMINAL READY (DTR)
5 GROUND (GND)
6 DATA SET READY (DSR)
7 REQUEST TO SEND (RTS)
8 CLEAR TO SEND (CTS)
9 RING INDICATOR (RI)
COM2: Serial Port 2 x 5 Pin Header Connector
COM2 Support three modes: RS-232, RS-422 and RS-485 (via 2 x 5 pin box header
connector).
RS-232 Mode
PIN Description PIN
1 DCD
3 RXD
5 TXD
7 DTR
9 GND
RS-422 Mode
PIN Description PIN
1 TXD-
3 TXD+
5 NC
7 NC
9 NC
Description
2 DSR
4 RTS
6 CTX
8 RI
10 NC
Description
2 RX-
4 RX+
6 NC
8 Voltage
10 NC
PC 5170 Flat Panel PC
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