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C2928M-QS (7/05) 9
Connecting RS-232 and RS-485 Control
Serial control can be used with stand-alone units, a wall, or several walls.
To connect an external controller:
1. Using a straight-through computer serial cable, connect the RS-232 input of the stand-alone unit or the first unit in the wall to the serial out
port of the external control device, such as a video controller. Refer to Figure 7.
2. Connect this first display’s RS-485 Out to the next display’s RS-485 In. Refer to Figure 7.
Figure 7.
RS-232 and RS-485 Connections
LOOPING
VIDEO
CONTROLLER
IN OUT IN OUT
FIRST DISPLAY SECOND DISPLAY