Operator ‘ADD’¶

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 to function block inputs. The number of additional function block inputs is limited.