A transport order provides complete end-to-end movement of a container: It is a job or work instruction to pick up a container from one location and place it in another location. Due to the cranes' handling characteristics, transport orders are asynchronous in that ECN4 cannot halt or reverse them once it has dispatched them. However, cranes can reject or abort (on page 1) transport orders.
ECN4 dispatches transport orders to ASCs based on an optimization algorithm (on page 1) that evaluates both a crane's location and its active work load. You can monitor ASC performance (on page 1) in the Pools & Equipment window.
If needed, you can also dispatch transport orders manually. However, any manual intervention entails potential problems. Therefore, Navis recommends relying on block optimization only.
Supervising optimized dispatching includes verifying that:
One or more ASCs are available, based on the status displayed in the Pools & Equipment window.
A crane is available when it is online, in automatic mode, and idle.
Order optimization (on page 1) functions as expected.
ECN4 sends transport orders to the ACCS, based on the Order Progress displayed in the Pools & Equipment window.
The ACCS accepts the order, starts to carry out the instruction, and reports back to ECN4. For more information, see Monitoring ASCs (on page 1).