Connect Tech Xtreme/104 Plus, PCI-104 and PCI/104 Express Family User Manual
Revision 0.09
35
19.7 Xtreme/PCI-104 Opto 12 Port
Table 5: 10 Pin R/A Port Header Pinouts on 12 Port Opto Models
Pin
No.
RS-232
Direction
RS422/485 4-wire
Direction
RS485 2-Wire
(Half Duplex)
Direction
1
NC
NC
RxD (-)
input
NC
NC
2
RXD
input
RxD (+)
input
NC
NC
3
RTS
output
RTS (+)
output
NC
NC
4
NC
NC
RTS (-)
output
NC
NC
5
TXD
output
TxD (+)
output
TxD/RxD+
input/output
6
NC
NC
TxD (-)
output
TxD/RxD-
input/output
7
NC
NC
CTS (-)
input
NC
NC
8
CTS
input
CTS (+)
input
NC
NC
9 *
GND / SR
GND / SR
GND / SR
GND / SR
GND / SR
GND / SR
10 *
GND / SR
GND / SR
GND / SR
GND / SR
GND / SR
GND / SR
1
9
10
2
* SR means Signal Reference. This is terminology used in RS485 communications.
NC means No Connect. Please avoid connecting to these pins.