Electronic component mounting system and electronic component mounting method

An electronic component mounting system configured by coupling a plurality of component mounting devices that each conducts a component mounting work for mounting an electronic component on a substrate,

• the electronic component mounting system comprising:
• a mode instruction unit configured to instruct one or more of the plurality of the component mounting devices to execute a first work mode and concurrently one or more of the plurality of the component mounting devices to execute a second work mode which is different from the first work mode;
• the plurality of component mounting devices, each of the component mounting devices comprising:
• a first substrate transport mechanism and a second substrate transport mechanism each transporting a substrate delivered from an upstream device in a substrate transport direction, and having a substrate holding unit that positions and holds the substrate;
• and
• a first work operation mechanism and a second work operation mechanism that are disposed in correspondence with the first substrate transport mechanism and the second substrate transport mechanism, respectively, and each executes a given work operation on the substrate held by the substrate holding unit,
• wherein at least one of the component mounting devices serves as an electronic component mounting device that includes a first tray feeder that stores an electronic component, a second tray feeder that stores an electronic component, a first parts feeder that stores an electronic component, and second parts feeder that stores an electronic component and the at least one of the component mounting devices further comprises a first mounting head that extracts the electronic components stored in the first tray feeder and the first parts feeder as the first work operation mechanism and a second mounting head that extracts the electronic components stored in the second tray feeder and the second parts feeder as the second work operation mechanism;
• wherein the first tray feeder corresponds to the first substrate transport mechanism and the second tray feeder corresponds to the second substrate transport mechanism, and the first tray feeder and the second tray feeder are disposed at diagonal positions of a base in plan view, and the first parts feeder is provided in parallel with the first tray feeder and the second parts feeder is provided in parallel with the second tray feeder, and the first parts feeder and the second parts feeder are disposed at diagonal positions of the base in plan view such that a virtual line extending between the first and second tray feeders crosses a virtual line extending between the first and second parts feeders.