Control device, image processing device, control method, computer-readable recording medium, and program

An information processing device constituting at least a part of a communication system, the information processing device comprising:

• a master unit connected to a first communication line;
• and
• at least one slave unit connected to the master unit via a second communication line, wherein
• the master unit includes:
• a first communication unit configured to transmit/receive data to/from another device via the first communication line in every predetermined cycle;
• a second communication unit configured to transmit/receive data to/from the slave unit via the second communication line in a time period shorter than the cycle;
• and
• an update unit configured to, after preceding data is received via the first communication line, update data with the slave unit via the second communication line before arrival of subsequent data corresponding to a next cycle.

A control method in a control device including a master control unit connected to a first communication line and at least one slave control unit connected to the master control unit via a second communication line, the control device constituting at least a part of a control system, the control method comprising:

• a step of, in the master control unit, transmitting/receiving data to/from another device via the first communication line in every predetermined control cycle;
• a step of, in the master control unit, transmitting/receiving data to/from the slave control unit via the second communication line in a time period shorter than the control cycle;
• and
• a step of, in the master control unit, after preceding data is received via the first communication line, updating data with the slave control unit via the second communication line before arrival of subsequent data corresponding to a next control cycle.

A control method in an information processing device including a master unit connected to a first communication line and at least one slave unit connected to the master unit via a second communication line, the information processing device constituting at least a part of a communication system, the control method comprising:

• a step of, in the master unit, transmitting/receiving data to/from another device via the first communication line in every predetermined cycle;
• a step of, in the master unit, transmitting/receiving data to/from the slave unit via the second communication line in a time period shorter than the cycle;
• and
• a step of, in the master unit, after preceding data is received via the first communication line, updating data with the slave unit via the second communication line before arrival of subsequent data corresponding to a next cycle.