Programmable logic controller, data collector, and programming support apparatus

A data collector connected to a programmable logic controller for repeatedly executing a user program, the programmable logic controller including

• a program storage part that stores the user program,
• a device storage part that holds a plurality of devices instructable by the user program and including a bit device for storing information of one bit and a word device for storing information of one word or several words, and
• a program execution part that repeatedly executes the user program stored in the program storage part and performs computing processing on information stored in each of the plurality of devices in accordance with the user program,
• the data collector comprising:
• a data collection part that repeatedly collects device data stored in at least one device to form time series device data having periodicity;
• an acquisition part that acquires an extraction period instructed by a user in the user program;
• an extraction part that extracts individual data from the time series device data in accordance with the extraction period acquired by the acquisition part;
• and
• an addition part that adds identification information for identifying each piece of the individual data extracted by the extraction part to each piece of the individual data.