You can perform the following immediate actions, without regard to the program scan.
Set SB 116 to immediately read the status of specific inputs and high-speed counter values. When SB 116 turns ON, the current input value written into linked SBs, current high-speed counter values are written into linked SIs.
Set the appropriate SBs to immediately clear high-speed counter values.
Set the appropriate SBs to immediately Set/Reset Outputs.
Note that:
Values are stored in linked SBs and SIs according to your controller model.
In the Ladder, inputs and high-speed counters retain the values updated at the beginning of the scan. Only the linked operands listed below are immediately updated. However, immediate changes in output status are immediately updated in the Ladder.
Use the tables below to determine which actions, SBs, and SIs are relevant to your model controller.