EXT CTRL RJ12 Pins:
RS232 control uses pin 1 for Ground (GND), and 2 Data Receive (RXD) on the EXT CTRL RJ12 jack.
Table 1 RS232 Command Structure
OUTPUT
HEX VALUE
UP
0xFF, 0xEE, 0xEE, 0xEE, 0xDD
DOWN
0xFF, 0xEE, 0xEE, 0xEE, 0xEE
STOP
0xFF, 0xEE, 0xEE, 0xEE, 0xCC
The Cirrus Screens motorized screen may also be controlled via contact closure or relay control.
1.
Run a Cat5e/6 cable from the control system processor location to the projection screen.
2.
Cut the RJ12 cable and leave about 12” of cable attached to the connector.
3.
Terminate conductors in the Cat5e/6 to the desired pins of the RJ12 connector as shown in the diagram
below. Insulate the ends of the unused RJ12 conductors to prevent short circuits.
4.
Terminate the same conductors to the appropriate wires on the RS232 port or contact/relay connection of
the control system processor.
Summary of Contents for Alto Series
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