SERIAL CODE OPERATED SWITCH S-COS/2
13
DISABLED (
MANUAL MODE
)
When the mode switch is in the Disabled position, the master port of the S-COS/2 is connected
to the port selected by the manual switch (A or B). All characters will be passed at all times and
code operation is not possible.
MODE 2 (
TRANSPARENT OR GRAPHICS
)
To operate in mode 2, the mode switch must be in the MODE 2 position and the manual toggle switch
must be in the COS position. DIP switch 1, position 7 must be closed and position 8 must be open.
NOTE: Only the device connected to the master port can control the switching in this mode.
The first character sent from the device connected to the master port must be the arming character
(selected by Switch S3) followed immediately by the port letter (A or B) that is to be connected to the
master port. Once the channel port is switched to the master port, all characters will be passed—
including arming characters. Switching channel ports requires a period of time (selected by Switch S7)
to elapse after transmission has stopped before the S-COS/2 can be set to switch ports. To switch ports
after the timeout period, the master port must send the arming character immediately followed by the
channel port letter.
4.2 Manual Override
The switch in the center of the front panel is for manual override. When this switch is in the COS
position, code operation is possible as per the setting of the mode switch.
Set the manual override switch to position A and set the mode switch to the DISABLE position to have
the master port connected to port A. Set the manual override switch to position B and set the mode
switch to the DISABLE position to have the master port connected to port B. All characters will be
passed through the S-COS/2.
4.3 Switch SW3 Arming Code Settings
EOT is the factory-default arming character.
1 = Closed (ON); 0 = Open (OFF)
ARMING CHARACTER SWITCH POSITIONS
LSB
MSB
ASCII
CTRL
HEX
DECIMAL
1
2
3
4
5
6
7
8
NUL
@
00
0
1
1
1
1
1
1
1
1
SOH
A
01
1
0
1
1
1
1
1
1
1
STX
B
02
2
1
0
1
1
1
1
1
1
ETX
C
03
3
0
0
1
1
1
1
1
1
EOT
D
04
4
1
1
0
1
1
1
1
1
ENQ
E
05
5
0
1
0
1
1
1
1
1
ACK
F
06
6
1
0
0
1
1
1
1
1
BEL
G
07
7
0
0
0
1
1
1
1
1
BS
H
08
8
1
1
1
0
1
1
1
1
Summary of Contents for S-COS/2
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