A control system includes a control device and a device that communicates with the control device. The control system includes a controller that periodically performs a control operation for controlling an object to be controlled, a communication processor that performs communication processing for periodically exchanging data with the device, a providing component that provides a development environment for performing a part of creation of contents of processing performed by the controller and for making of settings involved with communication processing by the communication processor, and a determination module that determines a settable range of a cycle time of exchange of data with the device based on contents set in the development environment.

Provided is a management device or the like that can flexibly set a task cycle of a master device. The management device is a management device that manages a network including a master device and a slave device connected to the master device, and comprises: a transmission delay time prediction unit which predicts a transmission delay time on the basis of network configuration information and node information; a transmission delay time measurement unit which measures the transmission delay time in the network; and a transmission delay time setting unit which presents to the user, a predicted value predicted by the transmission delay time prediction unit and a measured value measured by the transmission delay time measurement unit, and sets a cycle setting transmission delay time for setting a task cycle in which the master device transmits a signal to the slave device, according to the selection operation of the user.

A control system includes one or more control devices, and an information processing device. The information processing device and the one or more control devices are communicatively connected and time-synchronized with each other. The information processing device includes a processor configured to perform control calculation processing of calculating control data in accordance with control calculation based on data received from each of the one or more control devices. Each of the control devices includes a controller configured to perform input/output processing of transferring incoming data from a field device to the information processing device and outputting the control data received from the information processing device to the field device, and the control calculation processing and the input/output processing are performed within a period of time based on the time synchronization and shared between each of the control devices and the information processing device.

A control system includes a control device and a device that communicates with the control device. The control system includes a controller that periodically performs a control operation for controlling an object to be controlled, a communication processor that performs communication processing for periodically exchanging data with the device, a providing component that provides a development environment for performing a part of creation of contents of processing performed by the controller and for making of settings involved with communication processing by the communication processor, and a determination module that determines a settable range of a cycle time of exchange of data with the device based on contents set in the development environment.

A control system includes a control device that repeatedly performs a series of pieces of processing including I/O refresh processing and program execution processing. The control system includes: a first obtainment unit that obtains a first sample value group collected by repeatedly performing the I/O refresh processing in a first control period; a second obtainment unit that obtains a second sample value group collected by repeatedly performing the I/O refresh processing in a second control period longer than the first control period; a determination unit that determines whether a first frequency component in the first sample value group and a second frequency component in the second sample value group are substantially identical to each other; and a change unit that changes the first control period to the second control period under a condition that the first frequency component and the second frequency component are substantially identical to each other.

A control system includes a control device that repeatedly performs a series of pieces of processing including I/O refresh processing and program execution processing. The control system includes: a first obtainment unit that obtains a first sample value group collected by repeatedly performing the I/O refresh processing in a first control period; a second obtainment unit that obtains a second sample value group collected by repeatedly performing the I/O refresh processing in a second control period longer than the first control period; a determination unit that determines whether a first frequency component in the first sample value group and a second frequency component in the second sample value group are substantially identical to each other; and a change unit that changes the first control period to the second control period under a condition that the first frequency component and the second frequency component are substantially identical to each other.

A control system includes one or more control devices, and an information processing device. The information processing device and the one or more control devices are communicatively connected and time-synchronized with each other. The information processing device includes a processor configured to perform control calculation processing of calculating control data in accordance with control calculation based on data received from each of the one or more control devices. Each of the control devices includes a controller configured to perform input/output processing of transferring incoming data from a field device to the information processing device and outputting the control data received from the information processing device to the field device, and the control calculation processing and the input/output processing are performed within a period of time based on the time synchronization and shared between each of the control devices and the information processing device.