User guide

SW USB Series • Operation 15
Mode SIS Command Commands Passed Through to an AV Switcher
Loop 1
E
1LOOP
}
Only SIS commands received via the RS-232 control
port
Loop 0
(Default Mode)
E
0LOOP
}
• Input selections made via contact closure or the
front panel buttons
• SIS commands sent via the RS-232 interface
(loop 1 functionality)
See the “Command and Response Table for SIS Commands“ in the “SIS Programming
and Control” section for an explanation of all supported SIS commands.
NOTE: You can issue commands to the SW USB using the front panel buttons, RS-232,
or contact closure in both loop modes. The loop mode selection affects only
commands going through the RS-232 Pass Thru port to the AV switcher.
SIS command processing
When an AV switcher is connected to the RS-232 Pass Thru port, SIS commands are
processed in one of the following ways:
• Passed through to the AV switcher without being acted on by the SW USB
• Performed by the SW USB and not passed through to the AV switcher
• Performed by the SW USB and passed to the AV switcher, which also performs them.
This applies only to the input selection command
X!
!, where
X!
is the input number.
The table below shows how the SIS commands are handled by an SW USB with a connected
AV switcher. (Unless otherwise indicated, commands are not case-sensitive.)
SIS Command SW USB Function SW USB Response to Host
!
Performed and passed through Chn
X! ]
^
Performed, not passed through Usb
X! ]
E (any)
Performed, not passed through See the SIS command table.
X
Performed, not passed through
X# ]
N
Performed, not passed through 60-95n-02
]
Q
Performed, not passed through
n.nn
]
*Q
Performed, not passed through
n.nn.nnnn
]
I
Performed, not passed through Chn
X!
•InACT
X$
OutACT
X$ ]
0V – 100V
Passed through, not performed*
CMD
]
&
Passed through, not performed*
CMD
]
%
Passed through, not performed*
CMD
]
1B, 0B
Passed through, not performed*
CMD
]
1M, 0M
Passed through, not performed*
CMD
]
1Z, 0Z
Passed through, not performed*
CMD
]
$
Passed through, not performed*
CMD
]
* For explanations of commands that are passed through to the AV switcher and not
performed by the SW USB, see your AV switcher user guide.