| 摘要 |
PROBLEM TO BE SOLVED: To make it unnecessary to change the other program of APs which execute interprogram communication, in the case that the program description language of one AP is changed, and even if a data format which cannot be expressed by the changed program description language is included in the other AP. SOLUTION: A data structure generation system 2 generates data structure information (identifiers, sizes, offsets and so on) of each item which an AP 41 transmits and receives based on the program description 1 of an AP41 and registers the information with a data structure storage part 3. When data are transmitted, the AP 51 transfers the identifier and a value of an item to be included in the data transmitted to a data operation means 53. The data operation means 53 refers to the data structure storage part 3 and generates transmission data which include the value in a prescribed byte position. When data are received, the AP 51 transfers the identifier of an item referred to to the data operation means 53. The data operation means 53 refers to the data structure storage part 3 and extracts the value of an item to be referred to from a reception data area 55. COPYRIGHT: (C)2006,JPO&NCIPI
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