Computation unit, assistance device, output control method, display control method, and program

An assistance device configured to create a user program executed by a computation unit of a programmable logic controller,

• the computation unit comprising a memory stored with a first CAM curve in which a displacement of a driven shaft of an electronic cam is associated with each phase of a main shaft of the electronic cam, and a CAM table in which a displacement associated with one of the plurality of phases is altered,
• the assistance device comprising:
• a processor;
• memory stored with the first CAM curve and a support program configured to support the creation of the user program;
• a display;
• and
• a communication interface configured to communicate with the computation unit,
• the processor being configured to:
• acquire the first CAM curve and the CAM table from the computation unit using the communication interface when receiving a predetermined command, and
• display on the display the first CAM curve stored in the memory or the acquired first CAM curve, and a second CAM curve based on the acquired CAM table.

An output control method in a computation unit of a programmable logic controller configured to execute a motion control and a sequence control,

• the computation unit storing a CAM table and a program for performing the motion control using the CAM table in which a displacement of a driven shaft of an electronic cam is associated with each phase of a main shaft of the electronic cam,
• the output control method comprising the steps of:
• a processor of the computation unit outputting execution results of the program to an apparatus to be controlled associated with the driven shaft;
• the processor, when receiving a first command for altering at least either one of the plurality of phases or a displacement associated with the phase, altering at least either the phase or the displacement in the CAM table to a value that is on the basis of the first command;
• and
• the processor, when the alteration is performed, executing the program using a post-alteration CAM table, and outputting the execution results to the apparatus to be controlled.

A display control method in an assistance device configured to create a user program executed by a computation unit of a programmable logic controller,

• the computation unit storing a first CAM curve in which a displacement of a driven shaft of an electronic cam is associated with each phase of a main shaft of the electronic cam, and a CAM table in which a displacement associated with one of the plurality of phases is altered,
• the assistance device storing the first CAM curve and a support program configured to assist the creation of the user program in a memory,
• the display control method comprising the steps of:
• a processor of the assistance device acquiring the first CAM curve and the CAM table from the computation unit using a communication interface when receiving a predetermined command;
• and
• the processor displaying on a display the first CAM curve stored in the memory or the acquired first CAM curve and a second CAM curve based on the acquired CAM table.

A program configured to control a computation unit of a programmable logic controller configured to execute a motion control and a sequence control,

• the computation unit storing a CAM table and a program configured to perform the motion control using the CAM table in which a displacement of a driven shaft of an electronic cam is associated with each phase of a main shaft of the electronic cam,
• the program causing the computation unit to execute the steps of:
• outputting execution results of the program to an apparatus to be controlled associated with the driven shaft;
• altering, when receiving a first command for altering at least either one of a plurality of phases or a displacement associated with the phase, at least either the phase or the displacement in the CAM table to a value that is on the basis of the first command;
• and
• executing, when the alteration is performed, the program using a post-alteration CAM table, and outputting the execution results to the apparatus to be controlled.

A program configured to control an assistance device configured to create a user program executed by a computation unit of a programmable logic controller,

• the computation unit storing a first CAM curve in which a displacement of a driven shaft of an electronic cam is associated with each phase of a main shaft of the electronic cam, and a CAM table in which a displacement associated with one of the plurality of phases is altered,
• the assistance device storing the first CAM curve and a support program configured to assist the creation of the user program in a memory,
• the program causing the assistance device to execute the steps of:
• acquiring the first CAM curve and the CAM table from the computation unit using a communication interface when receiving a predetermined command;
• and
• displaying on the display the first CAM curve stored in the memory or the acquired first CAM curve, and a second CAM curve based on the acquired CAM table.