Distributed control device and distributed control system

A distributed control system comprising:

• a sub-terminal;
• a main terminal that controls the sub-terminal;
• and
• a relay terminal electrically coupled to the sub-terminal and the main terminal, wherein
• the sub-terminal includes
• a sub-control circuit operated by using a power supply voltage as a drive source,
• a first drive device controlled by the sub-control circuit,
• a first minor error output circuit that outputs a first minor error signal including first minor error information indicating whether or not a first minor error which is a minor abnormality occurs to the first drive device, and
• a first major error output circuit that outputs a first major error signal including first major error information indicating whether or not a first major error which is a major abnormality greater than the first minor error occurs to the first drive device,
• the relay terminal includes
• a management control circuit to which a minor error signal corresponding to the first minor error signal and a major error signal corresponding to the first major error signal are input, and that holds minor error information corresponding to the first minor error information included in the minor error signal, and major error information corresponding to the first major error information included in the major error signal, and
• a switching circuit to which the major error signal is input, and that switches whether or not to supply the power supply voltage to the sub-control circuit, and
• the switching circuit stops the supply of the power supply voltage to the sub-control circuit in accordance with the major error information included in the major error signal.