| 摘要 |
<p>A process controller 1 has a processor 2 with an initialisation controller 2(b), an operations controller 2(a) and a communications processor 2(c). The operations controller 2(a) operates in communication with a machine interface 4 for controlling operations of a concrete-mixing machine 3 for overall job sequencing and individual job control. There is automatic communication by use of polling and return signals to ensure correct sequencing of mixing operations. The initialisation controller 2(b) helps to ensure that the process controller 1 is configured at all times for correct operation at a particular building materials distribution location. The initialisation controller 2b creates a control file 9 and carries out verification operations automatically to ensure that the initially sorted data is correct. The communications processor 2(c) operates with parallel control and transmission files which are automatically transmitted to a host computer for consolidation. Control data in both the control and transmission files ensure data integrity. Delivery records are printed and are stored on disk. <IMAGE></p> |
