Lexmark 2380 Service Manual - Page 24
Switch 11- Polarity For RS-422 Serial Interface All Units
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Switch 11- Polarity For RS-422 Serial Interface (All Units): NOR/REV reverses the polarity of the receive and transmit data line for the RS-422 serial interface. Switch 11 Off On Mode Normal Reverse Switch 12 - Serial Interface Mode Select: (All Units) Switch 232/422 sets the serial interface in either RS-232C or RS-422 mode. Switch 12 Off On Mode RS-232C RS-422 1-12
1-12
Switch 11- Polarity For RS-422 Serial Interface (All Units):
NOR/REV reverses the polarity of the receive and transmit data line
for the RS-422 serial interface.
Switch 12 - Serial Interface Mode Select: (All Units)
Switch 232/422 sets the serial interface in either
RS-232C or RS-422 mode.
Switch 11
Mode
Off
Normal
On
Reverse
Switch 12
Mode
Off
RS-232C
On
RS-422