The IEC operator adds variables.
Permitted data types: __UXINT | __XINT | __XWORD | BYTE | DATE | DATE_AND_TIME | DINT | DT | DWORD | INT
| LDATE | LDATE_AND_TIME | LDT | LINT | LREAL | LTIME | LTOD | LWORD | REAL | SINT
| TIME | TIME_OF_DAY | TOD | UDINT | UINT | ULINT | USINT | WORD
Possible combinations for time data types
-
TIME + TIME = TIME -
TIME + LTIME = LTIME -
LTIME + LTIME = LTIME
Possible combinations for date and time data types
-
TOD + TIME=TOD -
DT + TIME=DT -
TOD + LTIME=LTOD -
DT + LTIME=LDT -
LTOD + TIME=LTOD -
LDT + LTIME=LDT -
LTOD +LTIME=LTOD -
LDT + LTIME=LDT
Feature in the FBD/LD editor: You can extend the ADD operator with function block inputs. The number of additional function block inputs
is limited.
Examples
ST
var1 := 7+2+4+7;
FBD
