A machine control system includes: a machine configured to execute a motion according to a machine command; and one or more servers configured to control the machine. The one or more servers include control circuitry configured to: repeat an execution of a motion program to generate the machine command for the machine; add first cycle information designating a first use timing to the machine command; and transmit the machine command including the first cycle information to the machine via a communication network. The machine includes a machine circuitry configured to: repeat a local processing for controlling the machine according to a machine control cycle; receive the machine command from the one or more servers; store the received machine command; and call the stored machine command, based on the first cycle information added to the stored machine command, to use the machine command in the local processing corresponding to the first use timing.

A method for synchronizing signals which are related to a machine and/or a machining process, including recording data of a first data source to obtain a first signal track, recording data of at least one second data source, which is independent of the first data source, to obtain at least one second signal track, analyzing the first and second signal tracks based on previously known domain knowledge, and temporally connecting the first and second signal tracks.

A controller includes circuitry configured to: synchronize a master clock with an external global clock and set a master time based on the master clock; synchronize a controller clock with the master clock and perform time synchronization to synchronize a controller time based on the controller clock with the master time; transmit controller time data indicating the synchronized controller time to at least one local device; set a plurality of time windows corresponding to a plurality of clock cycles of a clock signal for the time synchronization; determine whether one clock cycle of the plurality of clock cycles has started within one time window of the plurality of time windows, the one time window corresponding to the one clock cycle; and suspend the time synchronization corresponding to the one clock cycle, in response to determining that the one clock cycle has not started within the one time window.

A controller includes circuitry configured to: synchronize a master clock with an external global clock and set a master time based on the master clock; synchronize a controller clock with the master clock and perform time synchronization to synchronize a controller time based on the controller clock with the master time; transmit controller time data indicating the synchronized controller time to at least one local device; set a plurality of time windows corresponding to a plurality of clock cycles of a clock signal for the time synchronization; determine whether one clock cycle of the plurality of clock cycles has started within one time window of the plurality of time windows, the one time window corresponding to the one clock cycle; and suspend the time synchronization corresponding to the one clock cycle, in response to determining that the one clock cycle has not started within the one time window.

A control system, includes a master control device configured to control a first controlled object based on time information output from a first clock unit, and a slave control device connected to the master control device via a network and configured to control a second controlled object different from the first controlled object based on control information transmitted from the master control device and time information output from a second clock unit. The time information of the first clock unit and the time information of the second clock unit are time-synchronized.

A servo press line operation method operates a servo press line in which a servo press and a servo transfer device are disposed in a workpiece transfer direction. The servo press line operation method includes causing a transfer controller to receive a master signal that causes the servo transfer device to make a motion in synchronization with the servo press, the transfer controller controlling a motor of the servo transfer device using a motor instruction, causing the transfer controller to determine whether or not an abnormality in the master signal has occurred, and causing the transfer controller to generate the motor instruction based on a stop signal that stops the motor of the servo transfer device, instead of the master signal, when the transfer controller has determined that an abnormality in the master signal has occurred.