Справочник Пользователя для Mitsubishi Electronics AJ65bt-r2
5 - 16
MELSEC-A
5 PRELIMINARY INFORMATION
(3) Timing chart
Carried out with sequence program
Carried out by R2
Carried out by R2
1)
2)
3)
1)
4)
5)
6)
7)
8)
9)
11)
Required to change 0
H
to 112
H
R 2
One write operation
Remote station read signal
(RX(n+1)B)
(RX(n+1)B)
Intelligent device station access
request signal (RY(n+1)E)
request signal (RY(n+1)E)
Intelligent device station access
complete signal (RX(n+1)E)
complete signal (RX(n+1)E)
Initialization request signal
(RYn4)
(RYn4)
Initialization normal/error
complete signal (RXn4/RXn5)
complete signal (RXn4/RXn5)
Programmable controller CPU
word device
word device
Master station
transmission buffer
transmission buffer
Master station
reception buffer
reception buffer
R2 buffer memory
10)
No.
Details
Control side
1)
The value of buffer memory to be changed and control data is written to master station's
transmission buffer.
transmission buffer.
Program
2)
The intelligent device station access request signal (RY(n+1)E) turns ON.
Program
3)
The contents of the master station transmission buffer are stored in the R2 buffer memory.
R2
4)
The control data is stored in the master station reception buffer.
R2
5)
The intelligent device station access complete signal (RX(n+1)E) turns ON.
R2
6)
The intelligent device station access request signal (RY(n+1)E) turns OFF.
Program
7)
The intelligent device station access complete signal (RX(n+1)E) turns OFF.
R2
8)
The initialization request signal (RYn4) turns ON.
Program
9)
Initialization is carried out by R2, and when completed, the initialization normal signal (RXn4) or
error complete signal (RXn5) turns ON.
error complete signal (RXn5) turns ON.
R2
10) The initialization request signal (RYn4) turns OFF.
Program
11) The signal turned ON in step 9) turns OFF.
R2
POINT
If the R2 initialization is completed with an error, remove the cause of the error, and
repeat the initialization request until the process ends normally.
R2 will not accept other requests until the initialization is completed normally.
(If an initialization error occurs, the remote station READY signal (RX(n+1)B) will
turn OFF.)
repeat the initialization request until the process ends normally.
R2 will not accept other requests until the initialization is completed normally.
(If an initialization error occurs, the remote station READY signal (RX(n+1)B) will
turn OFF.)