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66 Matrix Modules Command Reference Chapter 4
[ROUTe:]OPEN?
[ROUTe:]OPEN? <channel_list> returns the current state of the channel(s)
queried. <channel_list> has the form (@ssrrcc) where ss = matrix module
card number (01-99), rr = matrix module row number, and cc = matrix
module column number. The command returns "1" if channel(s) are open or
returns "0" if channel(s) are closed.
Comments Query is Software Readback: ROUTe:OPEN? returns the current software
state of the channel(s) specified. It does not account for relay hardware
failures.
A maximum of 128 channels can be queried at one time: If you want to query
more than 128 channels, you must enter the query data in two separate
commands.
Example Querying Channel Open State
This example opens channels 10100 and 20013 of a two-module switchbox
and queries channel 20013 state. Since channel 20013 is programmed to
be open, "1" is returned.
OPEN(@10100,20013)
! Open channels 10100 and 20013
OPEN?(@20013)
! Query channel 20013 state
[ROUTe:]SCAN
[ROUTe:]SCAN <channel_list> defines the channels to be scanned.
<channel_list> has the form (@ssrrcc) where cc = card number 01-99) and
nn = channel number (00-31).
Parameters
Comments Defining Scan List: When ROUTe:SCAN is executed, the channel list is
checked for valid card and channel numbers. An error is generated for an
invalid channel list.
Name Type Range of Values Default Value
<channel_list> numeric E1465A
: rr: 00 - 15
cc: 00 - 15
E1466A
: rr: 00 - 03
cc: 00 - 63
E1467A
: rr: 00 - 07
cc: 00 - 31
N/A