2-Port RS422/485 Serial PCI Card
3
1.
Mode Settings:
JP5 (for S1)
JP6(for S2)
Description
RS485 2-wire mode
(Default)
RS485 4-wire mode
RS422 mode
2.
Termination Resistor Enable/Disable: This jumper enables/disables
the 120 Ohm termination resistor between DATA+ and DATA- of
the RS485 transceiver:
JP7 (for S1)
JP8(for S2)
Description
Termination Resistor Disabled
(Default)
485
-4W
485
-2W
422
485
-4W
485
-2W
422
485
-4W
485
-2W
422
OFF ON