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Connection Option (Opt8x) and Cable Wiring
Smartio C168H/HS User’s Manual 5-7
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
Opt8D
Opt8D DTE Device
DB9 Male DB25 Male
RxD 2 2 TxD
TxD 3 3 RxD
GND 5 7 GND
RTS 7 4 RTS
CTS 8 5 CTS
DTR 4 6 DTR
DSR 6 20 DSR
DCD 1 8 DCD
RS-422 Cable Wiring for Opt8J/F/Z
RS-422 connection boxes designed for Smartio C168 Series are:
Opt8J: Connection box with 8 female RS-422/485 DB25 ports. Set the port
switch to
OFF position (RS-422) for the desired port(s).
Opt8F: Connection box with 8 female RS-422 DB25 ports and Max. 500V DC
isolation protection which prevents damage caused by high potential
voltage.
Opt8Z: Connection box with 8 female RS-422 DB25 ports but without isolation
protection.