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HARSFEN0602
sp=sp*2/5+ac
op=ip|5
If the variable or the command is a vector, the assignment is allowable only for its single member. The
syntax of the vector member assignment is:
<Parameter or command name>[index]=<simple expression>
The index is an index of the relevant member vector. Indices are enumerated from zero.
Example:
ca[1] = 1
4.2.6.3 User variables
User variables are defined within a user program. The description and syntax rules of the variable definition
see at User variables of User Programming Language
User program variables may be used within the command line only if a program was compiled successfully
and downloaded to the Amplifier.
Through the Interpreter a user may inquire user variable value or change it.
A user has to pay special attention to the scope of a variable. A variable may be defined at the global or local
scope. The local variables are available only within the function where they are defined, while the global
variables are available within any function and outside a function.
A user variable may be inquired or changed when the program is in the running or halt status.
For example, suppose that a compiled program includes the following lines at the global scope:
int ZEBRA,GIRAFA[3];
float GNU;
Then the expression
GNU=ZEBRA*GIRAFA[1]+2*sin(GIRAFA[2]);
is valid. User program variables are case sensitive.
4.2.6.4 Built-in Function Calls
The built-in function call may be used in a single expression. For a list of built-in-functions refer
Mathematical Functions
The built-in function call may be a part of a single expression.
Example:
sin(3.14/2)
AC=abs(DC)
SP=SP+sin(3.14/2)
4.2.6.5 Time functions
Use the TM command to read the system 32 bit microsecond counter.
The time difference from the present time to an older sampling of TM can be taken in two methods:
Example
QP[1] = TM ; ** QP[1] is used just as storage
…. ** Do something
QP[2] = QP[1]-TM ; ** QP[2] is time difference in microseconds.
Example
QP[1] = TM ; ** QP[1] is used just as storage
…. ** Do something
QP[2] = tdif( QP[1]) ; ** QP[2] is time difference in milliseconds.
Time differences cannot be taken longer then 31 minutes.