Operation order system

An operation order system that is directed to a facility including a plurality of processing machines and that gives operation orders to an operator handling the processing machines, the operation order system comprising:

• a management apparatus that manages processing executed by the processing machines and operations performed by the operator handling the processing machines and that determines a next operation for the operator based on an operation state of the operator;
• and
• a portable terminal that is enabled to be carried by the operator and via which the operator is enabled to input the operation state of the operator so that the portable terminal transmits the input operation state to the management apparatus through wireless communication, the portable terminal receiving the next operation from the management apparatus through wireless communication and displaying the received next operation, wherein
• the management apparatus includes an operation state acquiring unit that estimates an operation start state or an operation completion state based on predetermined home position in the facility when the operator inputs operation start information or operation completion information via the portable terminal as the operation state;
• and
• a next-operation determining unit that determines a next operation for the operator based on the estimated operation start state or operation completion state.