User`s manual

5-10 Smartio C168H/PCI User’s Manual
RS-422 Cable Wiring for Opt8J/F/Z
RS-422 connection boxes designed for Smartio C168H/PCI boards are:
Opt8J: Connection box with 8 female RS-422/485 DB25 ports. Set the port switch to
the OFF position (RS-422) for the desired port(s).
Opt8F: Connection box with 8 female RS-422 DB25 ports and a maximum of 500V DC
isolation protection, helping to prevent damage caused by high potential voltage.
Opt8Z: Connection box with 8 female RS-422 DB25 ports, but without isolation
protection.
RS-422 Pinouts for Opt8J/F/Z:
pt8J/F/Z
2 RxD+(B)
3 TxD+(B)
14 RxD–(A)
16 TxD–(A)
7 GND
4 CTS+(B)
5 RTS+(B)
13 RTS–(A) Opt8J only
19 CTS–(A)
The RS-422 transmission distance can be as much as 4000 ft, and consequently the
connection box needs an external power adapter to supply 5V DC power. Either a
110V or 220V AC power adapter can be used with this product, depending on your
company’s power supply.