Sierra Video RTR-804 - Manual (Page 24)

SIERRA VIDEO
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** V65,23,-,0 !!
which has the same information as the three X commands in the previous example.
If the router has only one level, or if all levels are connected the same, the router might instead
use the Y command. For example:
** Y65,23 !!
The number of digits used for each number depends on the router. Newer routers use the
minimum number of digits necessary, i.e. there are no unnecessary leading zeroes in a number.
Older routers use the maximum number of digits ever required for an input or output number on
that particular router (e.g. a router with between 10 and 99 inputs would use two digits for the
input number).
"N": Input Status Inquiry
From Syntax Description
Host N in
Ask router to send status of outputs connected
on one or more levels to the specified input.
Router Y out,in or X out,in,lvl
Status of all outputs connected on one or more
levels to the specified input.
The command "N" requests that matrix status information for a single input be returned to the
host. The status information is sent as one or more "Y" and/or "X" commands. This command
works by identifying all outputs that connect to the specified input on any level, and then
generating "Y" and "X" status commands to report the status of those outputs. The "Y" and "X"
commands are formatted exactly as with the "O" command. For any given output connected to
the input, a "Y" command is used if the output is connected to the input on all levels, else "X"
commands are used on all levels on which the input is connected to that output.
Prior to version 10 software, this command was only useful on those router levels that allow an
input to be connected to at most one output, and status commands were only sent for such
levels. Beginning with version 10 software, a response is generated for all outputs connected to
the specified input on any level, regardless of how many outputs that might be, and regardless of
whether the level allows only one output connection or many output connections.
For example, the command:
**N4!!
to a router might have the following commands as its Response:
** X12,4,1 X12,4,2 X12,4,3 X13,4,4 Y23,4 !!
showing that input 4 connects to outputs (12,12,12,13) on levels 1-4, and to output 23 on levels 1-
4.
Note that a "V" command is never used in the response, unlike an "O" request described above.
This is because the "V" command specifies inputs connected to an output, not outputs connected
to an input.