PURPOSE: To provide the programmable controller which can set the number of times for executing processing with simple configuration and further can set the interlock condition of processing with simple configuration.

CONSTITUTION: User programs stored in a process stepping language are stored in user program memories 1-4 and in this case, however, the number of times for executing processing is described as the additional information of an action qualifier (AQ). Corresponding to the evaluation of this AQ, the number of times for executing processing is controlled based on the additional information. Further, a flag showing the state of processing as the object of interlock is described as the additional information of the AQ and based on the evaluation of this AQ, it is controlled corresponding to the flag whether processing is executed or not.