3-39
3
The VXI-11 protocol requires that the user set up a reverse interrupt channel
as described in paragraph A2.3. A simpler approach might be to periodically
query the Status Byte Register with a device_readstb? query.
3.8.15 Personalizing the Unit’s IDN Message
The 9099's IDN message can be changed to personalize the unit, to identify the
overall assembly as being from your company or to record product history or
revision dates. The IDN message is a lockable parameter and if locked, needs
to be unlocked before being changed. The format for the IEEE 488.2 IDN
message is four fields (company, model#, serial number and revision) sepa-
rated by commas and a maximum of 72 characters long. The word “model”
may not be used in an IEEE-488.2 IDN message. An example IDN message
change sequence is:
CAL:LOCK OFF
‘unlocks all parameters
CAL:IDN Acme Test Co, 101, s/n 007, Rev 1 07/08/30
'enters a new IDN message
CAL:LOCK ON
‘relocks all parameters
*SAV 0
‘saves IDN message and lock status
3.8.16 Saving the Configuration
The *SAV 0 command saves the current configuration in nonvolatile Memory.
This includes all configuration settings and the current I/O settings. The saved
configuration is recalled and the I/O settings restored to their saved state at
power turn-on or by the *RCL 0 command. WARNING - because the Non-
volatile Memory has a finite number of write cycles, the *SAV command
should not be used inside a program loop. Be sure all settings are correct
before saving.
*SAV 0
‘saves current values and configuration
*RCL 0
‘recalls the saved configuration
Содержание 9099
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