Datum bc632D, User Manual

Page: 17 / 82

INSTALLATION AND SETUP
Datum Inc bc632D Wall Mount LED Display (Rev A) 2-3
2.1.4 JUMPER JP2 - RS-232/RS-485 SELECT FOR J3 PIN A6
Two pins on connector J3 are dual-purpose. They provide an RS-232 port to a controlling computer,
or an RS-485 port for connecting a network of displays. If the display is to be connected directly to
the RS-232 port of a computer, then leave the jumpers between pins 1 and 2 of JP2. This routes pin
A6 to an RS-232 driver. If you are using the display as part of a daisy-chained network, put the
jumper on pins 2 and 3, which routes pin A6 to the (+) terminal of an RS-485 transceiver.
1
2
3
4
1
2
3
4
Not Terminated
(Factory Setting)
Terminated
Figure 2-2
Jumper JP1 Settings
3 1 2
3 1 2
JP2
JP2
RS-232
(Factory Setting)
RS-485
Figure 2-3
Jumper JP2 Settings