9 Pin D Connector
PIN 6 - RECEIVED DATA (RXD-)
PIN 7 - RECEIVED DATA (RXD+)
PIN 8 - CLEAR TO SEND (CTS-)
PIN 9 - CLEAR TO SEND (CTS+)
37 Way D Connector
PCI cards require no hardware configuration for IRQ and address allocation -
this is done automatically at start up by the PC. However, the PCI quad
RS422/485 has four sets of jumpers for configuration of RS485 multiplex modes
for each port, how to configure these jumpers is shown below.
PIN 1 - TRANSMITTED DATA (TXD-)
PIN 2 - TRANSMITTED DATA (TXD+)
PIN 3 - REQUEST TO SEND (RTS-)
PIN 4 - REQUEST TO SEND (RTS+)
PIN 5 - GROUND (GND)
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