INITIALISATION DURING THE PROGRAM (RESET-INIT)
During the operation of a program containing one or more independent SFC charts, a chart containing the RESET-INIT function can be reinitialised independently of the other SFC charts by setting the REINITIALISATION digital input of the RESET-INIT function to ON.
This input can be connected to other FBD blocks with digital outputs. For example, a combination of Boolean inputs can control this initialisation input.
During the execution of the user program, as soon as the REINITIALISATION input of the RESET-INIT function changes to ON, each INIT STEP function and the RESET-INIT function belonging to the same SFC chart will contain a status token indicating the active operating phases. All the other steps belonging to other functions in the same SFC chart do not contain a token: all the operating phases they indicate are not active. All other functions belonging to other independent SFC charts previously are not affected.
As long as the REINITIALISATION input is in the ON state, the steps are forced as described above and without taking account of the values applied to the control inputs associated with all the transitions of the functions in the chart.
Example: An SFC chart has one INIT STEP function and one RESET-INIT function. A second SFC chart separated from the first contains only one RESET-INIT function, and a third SFC chart separated from the first two contains only one INIT STEP function.