Mitsubishi Electric AJ65BT-D75P2-S3 User Manual page 304

6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Setting item
External start
Pr.43
function selection
External start valid
* Refer to section "3.4 Specifications of input/output signals for master module", "Chapter 5 DATA USED FOR
POSITIONING CONTROL" for details on the setting details.
Positioning start signal
Remote station READY
signal
D75P2 READY signal
Start complete signal
BUSY signal
Positioning complete signal
Error detection signal
External start signal
(2) Starting by inputting external start signal
When starting positioning control by inputting the external start signal, the start
command can be directly input into the D75P2. This allows the variation time
equivalent to one scan time of the PLC CPU to be eliminated. This is an effective
procedure when operation is to be started as quickly as possible with the start
command or when the starting variation time is to be suppressed. To start
positioning control by inputting the external start signal, set the "data required to
be set" and then turn ON the external start signal.
Restrictions
When starting by inputting the external start signal, the start complete signal
[RXn1, RXn2] will not turn ON.
Data required to be set
To execute positioning start with the external start signal, set parameter ( Pr.43 )
beforehand, and validate the "external start signal" with the "external start function
valid setting program (program No. 6).
Setting
value
0 Set to "0: External positioning start".
ON Set to "ON: Validate external start".
Starting time chart
V
[RY(n+1)0]
[RX(n+7)B]
[RXn0]
[ RXn 1]
[ RXn 4]
[ RXn 7]
[ RXn A]
Pr. 43 External start function selection
Positioning start No. [RWwm, RWwm+8]
[RY(n+2)B, RY(n+4)B]
External start valid
Fig. 6.11 Time chart for starting with external start signal
Setting details
Operation pattern
Positioning data No.
6 - 60
MELSEC-A
Remote input/output,
buffer memory address
Axis 1
62
RY(n+2)B RY(n+4)B
Dwell time
1(00)
0
1
Axis 2
212
t