flex_read_var_rtn |
Read Variable Return
Usage
status = flex_read_var_rtn(u8 boardID, u8 variable1, i32* value);
Purpose
Reads the value of a variable and returns the result.
Parameters
| Name | Type | Description |
|---|---|---|
| boardID | u8 | assigned by Measurement & Automation Explorer (MAX) |
| variable1 | u8 | variable to read |
| value | i32* | value of the variable |
Parameter Discussion
variable1 is the variable to read. Valid inputs are variables (0x01 through 0x78) and indirect variables (0x81 through 0xF8).
value is the value of the variable.
Using This Function
This function reads the value of the selected variable and returns it to value.
The condition codes are set according to the value read: GREATER THAN, LESS THAN, or EQUAL to zero.