Eurotech Appliances VIPER / VIPER-LITE PXA255 - Manual (Page 66)

VIPER Technical Manual Detailed hardware description
© 2007 Eurotech Ltd Issue E 66
Typical RS422 and RS485 connection
RS485 MULTI-DROP RS422 POINT-TO-POINT RS422 MULTI-DROP
Number of Wires 5
Transmitters Enabled always
Receivers Enabled always
Duplex Mode full
LK6 B
LK7
B
Number of Wires 5
Transmitters Enabled active RTS
Receivers Enabled always
Duplex Mode full
LK6 B
LK7
B
Number of Wires 3
Transmitters Enabled active RTS
Receivers Enabled always
Duplex Mode half
LK6 A
LK7 A