Positioning device and PLC system

A PLC system comprising:

• a positioner configured to position a hardware device, the positioner comprising:
• an analyzer that analyzes a positioning start instruction that includes an operation pattern including a start address which is a location at which the hardware device begins moving according to the operation pattern;
• a memory that stores therein an operation pattern and an analysis result obtained by the analyzer analyzing the operation pattern stored in the memory in association with each other;
• and
• an instruction generator comprising a processor that, based on whether the operation pattern stored in the memory corresponds to the operation pattern included in the positioning start instruction, reads the analysis result associated with the operation pattern stored in the memory and generates positioning instruction data for positioning a control target that is the hardware device by using the read analysis result;
• and
• a controller that controls the positioner and is capable of being connected to a peripheral device, wherein
• when the peripheral device is connected to the controller, the controller backs up a storage content of the memory by transferring and writing data in the memory of the positioner to the peripheral device,
• wherein the instruction generator determines whether the operation pattern stored in the memory corresponds to the operation pattern included in the positioning start instruction by analyzing the operation pattern stored in the memory, the operation pattern included in the positioning start instruction, and the start address in response to determining that the positioning start instruction is compatible with a first value specifying method, and analyzing the operation pattern stored in the memory and the operation pattern included in the positioning start instruction while omitting the analyzing of the start address in response to determining that the positioning start instruction is compatible with a second value specifying method, and
• wherein, by generating the positioning instruction data based on the operation pattern stored in the memory, the instruction generator reduces a positioning start time of the positioner as compared to a positioning start time when the positioning instruction data is not generated based on the operation pattern stored in the memory, to thereby achieve a high-speed positioning start.

A PLC system comprising:

• a positioner configured to position a hardware device, the positioner comprising:
• an analyzer that analyzes a positioning start instruction that includes an operation pattern including a start address which is a location at which the hardware device begins moving according to the operation pattern;
• a memory that stores therein an operation pattern and an analysis result obtained by the analyzer analyzing the operation pattern stored in the memory in association with each other;
• and
• an instruction generator comprising a processor that, based on whether the operation pattern stored in the memory corresponds to the operation pattern included in the positioning start instruction, reads the analysis result associated with the operation pattern stored in the memory and generates positioning instruction data for positioning a control target that is the hardware device by using the read analysis result;
• and
• a controller that controls the positioner and is capable of being connected to an external storage medium, wherein
• when the external storage medium is connected to the controller, the controller backs up a storage content of the memory by transferring and writing the storage content of the memory of the positioner to the external storage medium,
• wherein the instruction generator determines whether the operation pattern stored in the memory corresponds to the operation pattern included in the positioning start instruction by analyzing the operation pattern stored in the memory, the operation pattern included in the positioning start instruction, and the start address in response to determining that the positioning start instruction is compatible with a first value specifying method, and analyzing the operation pattern stored in the memory and the operation pattern included in the positioning start instruction while omitting the analyzing of the start address in response to determining that the positioning start instruction is compatible with a second value specifying method, and
• wherein, by generating the positioning instruction data based on the operation pattern stored in the memory, the instruction generator reduces a positioning start time of the positioner as compared to a positioning start time when the positioning instruction data is not generated based on the operation pattern stored in the memory, to thereby achieve a high-speed positioning start.