Open; Scan - HP E1368A/69A/70A User Manual

OPEN?

Comments
Example

SCAN

Parameters
Comments
Example
60 HP E1368A/69A/70A Command Reference
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[ROUTe:]OPEN? < channel_list
queried. The channel_list is in the form (@ccnn). The command returns 1
if the channel is open or returns 0 if the channel is closed.
Query is Software Readback: The
returns the current software state of the channels specified. It does
not account for relay hardware failures. A maximum of 127
channels at a time can be queried for a multi-module switchbox.
Query Channel Open State
This example opens channels 100 and 202 of a two-module switchbox (card
numbers 01 and 02) and queries channel state. Since the channels are
programmed to be open 1,1 is returned.
OPEN (@100,202)
OPEN? (@202)
[ROUTe:]SCAN < channel_list
channel_list is in the form (@ccnn) where cc = card number (00-99) and nn
= channel number (00-04).
Parameter Name Parameter Type
channel_list numeric
Defining the Scan List: When executing
channel list is checked for valid card and channel numbers. An error
is generated for an invalid channel list.
Scanning Channels: To scan:
a single channel, use
–
for multiple channels, use
–
sequential channels, use
–
a group of sequential channels, use
–
[ROUTe:]SCAN (@ccnn:ccnn,ccnn:ccnn)
or any combination.
–
Scanning Operation: With a valid channel list,
starts the scanning cycle and closes the first channel in the channel
list. Successive triggers from the source specified by
TRIGger:SOURce
Stopping Scan: See the
Related Commands:
*RST Condition: All channels open.
Scanning Using External Device
See the section in Chapter 3 titled "Scanning Channels" for examples of
scanning programs using external instruments.
> returns the current state of the channel(s)
[ROUTe:]OPEN?
100 opens channel 00 of card #1;
202 opens channel 02 of card #2.
Query channel 02 of card #2.
> defines the channels to be scanned. The
Range of Values
cc00 - cc04
[ROUTe:]SCAN
[ROUTe:]SCAN (@ccnn)
[ROUTe:]SCAN (@ccnn,ccnn,
[ROUTe:]SCAN (@ccnn:ccnn)
advances the scan through the channel list.
ABORt command.
TRIGger , TRIGger:SOURce
command
Default Value
N/A
, the
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INITiate[:IMMediate]
Chapter 4