| 摘要 |
PROBLEM TO BE SOLVED: To provide a broadcast communication download circuit for collectively transmitting download data from a host CPU card to respective slave CPU cards. SOLUTION: Respective slave CPU cards 3 to 5 are connected to the host CPU card 2 through a common signal line 8. Each slave CPU card has an address set up in order to execute communication with the card 2. All the slave CPU cards 3 to 5 can receive download data only by writing the download data in any one of address areas set up in respective cards 3 to 5. Consequently the download of data from the host CPU card 2 can be collectively executed. |
