| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method and a device for managing production lot information, with which exact production lot information can be acquired even when irregular operation such as processing stop of a production lot or reprocessing of the same production lot is performed. SOLUTION: This method has a deletion procedure 11 for calculating the lapse of time from time 17, which is recorded in message data 15 transmitted from a production device 2 and recorded in a message buffer 7, and present time and deleting message data 15 when the lapse of time exceeds set time 14, the excessive message data 15 remained in the message buffer 7 are deleted and the states of a production lot under processing in the production device 2 and a production lot, with which processing is stopped, are exactly grasped.</p> |
