Printed in U.S.A.
93489 Rev. 11/04
3
RS-232 Communications
The command protocols are as follows.
Screen 1 up:
@1U
Screen 1 stop: @1S
Screen 1 down: @1D
Screen 2 up:
@2U
Screen 2 stop: @2S
Screen 2 down: @2D
Poll:
@P
Response to a poll is @1x2x where x is U for up, S for stop, D for down.
Communications is 9600 baud, 8 data bits, No parity, 1 stop bit.
No “Return” or “Enter” is required at end of string. The command will be executed as soon as the U, D, or S is received.
There is a 50ms time out if a valid character is received but the string is not finished. All command characters must be
sent in one packet.
Built-In SCB-100 Control
Locate the 11-pin connector in the junction box of the screen. Refer to diagram 4 for wire connections.
RS-232 Ports
The SCB-100 has two RS-232 ports. Both ports have three wire connections.
RX-Data being received into the SCB-100.
TX-Data going out of the SCB-100.
G-Ground.
Wall Switch
The wall switch terminal is a dry contact closure. Do not apply voltage to this terminal or the control will be damaged.
1. Install the wall switch where desired.
2. Use 3-conductor 20-24 gauge wire to extend the switch wire to the required length.
12VDC Out
The SCB-100 supplies power to the optional NET-100 network adaptor. If you are using the NET-100 adaptor, connect the
power wire from the NET-100 to the 12VDC output terminal.
INSTALLATION
1
2
3
4
5
6
7
8
9 10 11
1
2
3
4
5
6
7
8
9 10 11
RX-DATA IN
G-GROUND
TX-DATA OUT
RX-DATA IN
G-GROUND
TX-DATA OUT
WHITE-COMMON
BLACK-DOWN
RED-UP
-
+
12VDC OUT
TERMINALS 1-3 = RS232 PORT 2
TERMINALS 4-6 = RS232 PORT 1
TERMINALS 7-9 = WALL SWITCH
TERMINALS 10-11 = NET-100 CONTROLLER
