F_ARGCMP
This function compares two variables of type T_Arg and supplies the result of the comparison as return parameter.
FUNCTION F_ARGCMP: DINT
VAR_INPUT
VAR_INPUT
typeSafe : BOOL;
arg1 : T_Arg;
arg2 : T_Arg;
END_VARtypeSafe: If TRUE => identical types can be compared (type-safe comparison). FALSE => different types can be compared (type-independent comparison).
arg1: First variable to be compared (type: T_Arg).
arg2: Second variable to be compared (type: T_Arg).
|
Return parameter |
Relationship of the first different byte (type, length, value) in the first and second variable |
|---|---|
|
-3 |
Length of arg1 less than arg2 |
|
-2 |
Type of arg1 less than arg2 |
|
-1 |
Value of arg1 less than arg2 |
|
0 |
arg1 identical to arg2 |
|
1 |
Value of arg1 greater than arg2 |
|
2 |
Type of arg1 greater than arg2 |
|
3 |
Length of arg1 greater than arg2 |
|
0xFF |
Wrong parameter values, type, length, value of arg1 or arg2 = 0 |
Requirements
|
Development environment |
Target platform |
PLC libraries to be integrated (category group) |
|---|---|---|
|
TwinCAT v3.1.0 |
PC or CX (x86, x64, ARM) |
Tc2_Utilities (System) |