Control system, local device, and remote device

A local device in a local environment for a control target device, the local device comprising:

• a local state machine to make a state transition among a plurality of states each set with either of a remote control attribute and a local control attribute as an attribute;
• and
• processing circuitry
• to receive an input value signal for providing notification of an input value from the control target device;
• to receive an output packet for providing notification of an output value to the control target device from a remote device in a remote environment for the control target device;
• and
• when the attribute of a current state of the local state machine is the remote control attribute, to transmit to the control target device, an output value signal for providing notification of the output value to the control target device of which notification is provided by the output packet, and, when the attribute of the current state of the local state machine is the local control attribute, to output, to the local state machine, the input value from the control target device of which notification is provided by the input value signal to cause the local state machine to generate an output value to the control target device, and to transmit to the control target device, an output value signal for providing notification of the output value to the control target device generated by the local state machine.

A remote device in a remote environment for a control target device, the remote device comprising:

• a primitive state machine to make a state transition among a plurality of states each set with either of a remote control attribute and a local control attribute as an attribute;
• and
• processing circuitry
• to receive an input packet for providing notification of an input value from the control target device transmitted from a local device in a local environment for the control target device;
• and
• when the attribute of a current state of the primitive state machine is the remote control attribute, to output, to the primitive state machine, the input value from the control target device of which notification is provided by the input packet to cause the primitive state machine to generate an output value to the control target device, to transmit to the local device, an output packet for providing notification of the output value to the control target device generated by the primitive state machine, and to cause the local device to transmit, to the control target device, an output value signal for providing notification of the output value of which notification is provided by the output packet.