for the selected scope: VAR_INPUT , VAR_OUTPUT , or VAR_IN_OUT . Call :

_BLOCK POU VAR_IN_OUT [...] OF INT; END_VAR VAR [...] ; test2: DINT; END_VAR

_INPUT VAR_INST VAR_IN_OUT [...] _INST VAR_IN_OUT VAR [...] variable *) END_VAR VAR_IN_OUT

_MyB VAR_INPUT iInB : [...] _OUTPUT iOutB : INT; END_VAR [...] TRUE, iOutB => iVar

_BLOCK locio VAR xLocIn [...] _CONFIG PLC_PRG.locioVar1.xLocIn AT %IX1.0 : BOOL; PLC_PRG.locioVar1.xLocOut

VAR_IN_OUT | VAR [...] in the declaration section VAR [...] PersistentVars VAR

these variables with VAR_IN_OUT [...] Examples VAR wInput AT %IW0 : WORD; END_VAR

_BLOCK FB_MyA VAR_INPUT iIn [...] _OUTPUT iOutA : INT; END_VAR [...] 2 : INT; END_VAR fbMyA1(iIn

only in VAR_IN_OUT

_OUTPUT ) VAR_IN_OUT [...] : VAR (default [...] variable ( VAR ) Global