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SERIAL CONTROL AND MODE SWITCHES
The system configuration DIP switches S2 and S3 are located on the front edge of the SCI-MRX printed circuit board.
The power supply frame holds the SCI-MRX module. Remove the front panel of the frame to access the switches. The
momentary push-button reset switch S1 is positioned next to S3. See INTRODUCTION for details.
This chart sets the communications Baud Rate.
S2,1
ON
OFF
ON
OFF
This chart sets the number of switcher inputs (sources).
S2,3
ON
OFF
ON
OFF
ON
OFF
ON
OFF
This chart sets the number of switcher outputs (destinations).
S2,6
ON
OFF
ON
OFF
ON
OFF
ON
OFF
This chart indicates protocol format and logical address.
S2,9
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Use address 00 for RS-232. All other settings are for RS-422 operation.
Control Level
S2, 12
Levels
ON
8
OFF
4
NOTE 1 - Fixed serial communications parameters are: 8 Character bits
NOTE 2 - Synchronous mode switching occurs on line 10 in NTSC and line 7 in PAL when reference is supplied.
APPENDIX A – SCI PROTOCOL AND INTERFACE
S2,2
Baud Rate
ON
9600
ON
19200
OFF
38400
OFF
57600
S2,4
S2,5
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
S2,7
S2,8
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
S2,10
S2,11
ON
ON
ON
ON
OFF
ON
OFF
ON
ON
OFF
ON
OFF
OFF
OFF
OFF
OFF
Control Panel Type
S3,1
Panel Type
ON
Numeric
OFF
Alpha
The Dip switch settings below are configured for a 4 level
32x32 matrix using RS-232 protocol at 38,400 baud rate.
Input Range
01 - 16
01 - 32
01 - 48
01 - 64
01 - 80
01 - 96
01 - 112
01 - 128
Output Range
01 - 16
01 - 32
01 - 48
01 - 64
01 - 80
01 - 96
01 - 112
01 - 128
Logic Address
RS-232
01
02
03
04
05
06
07
Handshaking
S3.2
Handshaking
ON
Enabled
OFF
Disabled
A7
Off [down] / ON [up]
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
R
E
S
E
T
Reserved
Panel Scan
S3.3
S3.4
Reserved
ON
OFF
1 Stop bit
No Parity
S2
S3
Panel Scan
Scan ALL
Scan Active
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