Detects the code locations where the notation of an identifier is different from the notation in its declaration
Justification: The IEC 61131-3 standard defines identifiers as not case-sensitive. This means that a variable declared as "varx" can also be used as "VaRx" in the code. However, this is confusing and misleading and should be avoided.
Importance: Medium
Example
A POU PLC_PRG and a POU fnc (function) exist in the device tree.
PROGRAM PLC_PRG VAR iVar: INT; _123test_var_: INT; END_VAR ivar := iVar + 1; // SA0029 _123TEST_var_ := _123test_var_; // SA0029 Fnc(); // SA0029 --> SA0029: Notation in code (ivar) must equal declaration (iVar) --> SA0029: Notation in code (_123TEST_var_) must equal declaration (_123test_var_) --> SA0029: Notation in code (Fnc) must equal declaration (fnc)