Printer

A printer comprising:

• a user interface;
• a communication interface;
• a memory storing an external function program;
• and
• a controller configured to execute the external function program to:
• access a server via the communication interface, receive instruction data transmitted from the server, and analyze the received instruction data;
• in response to determining that the instruction data includes a tag indicating an operation instruction and a tag indicating download printing, execute a download printing process of downloading, via the communication interface, print data indicated in the instruction data and performing printing based on the downloaded print data;
• in response to determining that the instruction data includes a tag indicating the operation instruction and a tag indicating download setup, execute a download setup process of downloading, via the communication interface, setup data indicated in the instruction data and setting up the printer based on the downloaded setup data;
• in response to determining that the instruction data includes a tag indicating a display instruction, control the user interface to display a display screen based on the instruction data, the display screen being configured to include options in accordance with the instruction data;
• in response to receiving, via the user interface, an operation of selecting one of the options included in the display screen, access a server indicated by access information included in the instruction data and receive next instruction data from the server;
• in response to determining that the next instruction data includes a tag indicating the operation instruction and a tag indicating the download printing, execute the download printing process in accordance with the next instruction data;
• and
• in response to determining that an execution condition is satisfied, the execution condition being that execution timing set by one timing information among a plurality of timing information stored in the memory has come, access a server indicated by access information associated with the one timing information, and in response to determining that the instruction data received from the server includes a tag indicating the operation instruction and a tag indicating the download setup, execute the download setup process,
• each of the plurality of timing information being associated with a respective one of a plurality of access information, and different timings being configured to be set to the plurality of timing information,
• the download setup process excluding the download printing process and a scan upload process, the scan upload process being a process of performing scan and uploading scan data via the communication interface.