VXI VT1422A - Manual (Page 246)

244 VT1422A Command Reference Chapter 7
ALGorithm
ALGorithm[:EXPLicit]:SCALar
ALGorithm[:EXPLicit]:SCALar ’<alg_name>’,’<var_name>’,<value> sets the
value of the scalar variable <var_name> for algorithm <alg_name> into the Update
Queue. This update is then pending until ALG:UPD is sent or an update event (as set
by ALG:UPD:CHANNEL) occurs.
Note
ALG:SCALAR places a variable update request in the Update Queue.
Do not place more update requests in the Update Queue than are allowed by the
current setting of ALG:UPD:WINDOW or a "Too many updates – send
ALG:UPDATE command" error message will be generated.
Parameters
Comments •
To send values to a global scalar variable, set the <alg_name> parameter to
'GLOBALS'. To define a scalar global variable see the ALGorithm:DEFine
command.
•
An error is generated if <alg_name> or <var_name> is not defined.
•
Related Commands: ALG:DEFINE, ALG:SCAL?, ALG:UPDATE
•
*RST Condition: No algorithms or variables are defined.
•
Use VXIplug&play function: hpe1422_algExpScal(...)
Usage ALG:SCAL 'ALG1','my_var',1.2345
1.2345 to variable my_var in ALG1
ALG:SCAL 'ALG1','another',5.4321
5.4321 to variable another also in ALG1
ALG:SCAL 'ALG3','my_global_var',1.001
1.001 to global variable
ALG:UPD
update variables from update queue
Parameter
Name
Parameter
Type
Range of
Values
Default
Units
alg_name string ALG1 - ALG32 or GLOBALS none
var_name string valid 'C' variable name none
value numeric (float32) IEEE-754 32-bit floating point number none