Mitsubishi MELSEC LJ71C24, Руководство пользователя

Страница: 366 / 428

App. - 37 App. - 37
APPENDIXES
Appendix 5.2 Verification operation of receive packet
The following shows the C24 operation when data that are different from the specified
receive packet are received.
Receive data prior to the different data are discarded. Data are compared again from
the start of the receive packet, and once the data are matched with the receive packet,
the data receiving operation is processed.
STX
Specified
receive packet
STX ’1’ ’2’ ’3’ ’4’ ’5’ ’6’ ETX
Receive data STX ’1’ ’2’ ’3’
Same Same Same Same Different
’1’ ’2’ ’3’ ’4’ ’5’ ’6’ ETX
Specified
receive packet
Receive data
STX ’1’ ’2’ ’3’ ’4’ ’5’ ’6’ ETX
STX ’1’ ’2’ ’3’ ’4’ ’5’ ’6’ ETX
Same Same Same Same Same Same Same Same
Discarded
Verification match