Справочник Пользователя для Mitsubishi Electronics AJ65bt-r2
6 - 5
MELSEC-A
6 EXCHANGING DATA WITH AN EXTERNAL DEVICE
6.2 Matters to know before receiving data
When receiving data from an external device, first it is confirmed that the reception
normal read request (RXn2) or reception error read (RXn3) is ON, and then the data
stored in the R2 reception area is read out.
After reading, the reception is completed by turning the reception read complete signal
(RYn2) ON.
normal read request (RXn2) or reception error read (RXn3) is ON, and then the data
stored in the R2 reception area is read out.
After reading, the reception is completed by turning the reception read complete signal
(RYn2) ON.
(1) Reception procedures
End
The reception read complete signal (RYn2) turns OFF
The R2 turns OFF the reception normal read request signal (RYn2)
or reception error read request signal (RYn3).
or reception error read request signal (RYn3).
After reading, the reception read complete signal (RYn2) turns ON
Start
The reception data is stored from the OS reception area to the reception area.
The R2 turns ON the reception normal read request signal (RXn2)
or reception error read request signal (RXn3).
or reception error read request signal (RXn3).
The reception data is read from the R2 reception area using the buffer
memory automatic update function or transmission/reception buffer.
memory automatic update function or transmission/reception buffer.
Sections 5.6, 5.7.