Control device

A control device for causing a plurality of field devices to operate in coordination with one another in accordance with a predetermined program through a network allowing periodic communication, the control device comprising:

• a processor configured to:
• calculate, based on a position of a first field device in a first cycle, a position of the first field device operable in accordance with a first program in a second cycle following the first cycle;
• and
• determine, based on the first program, a first command value to cause the first field device to operate, to transmit the first command value to the first field device through an interface allowing communication with the plurality of field devices, to determine, based on the calculated position of the first field device and a second program, a second command value to cause a second field device to operate in coordination with the first field device, and to transmit the second command value to the second field device through the interface, the first field device operating in accordance with the first command value, the second field device operating in accordance with the second command value,
• wherein the processor calculates the position of the first field device in the second cycle by adding, to the position of the first field device in the first cycle, a value determined by multiplying an operating speed of the first field device by a predetermined correction coefficient.