Mitsubishi QD75P1N User Manual page 268

6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
Setting item
External command
Pr.42
function selection
Cd.8
External command valid
Refer to CHAPTER 5 "DATA USED FOR POSITIONING CONTROL" for details on the setting details.
Positioning start signal
PLC READY signal
QD75 READY signal
Start complete signal
BUSY signal
Positioning complete signal
Error detection signal
External command signal
Pr. 42 External command function selection
Cd. 3 Positioning start No.
Cd. 8 External command valid
[2] Starting by inputting external command signal
When starting positioning control by inputting the external command signal, the
start command can be directly input into the QD75. This allows the variation time
equivalent to one scan time of the CPU module 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 command signal, set the "data
required to be set" and then turn ON the external command signal.
Restrictions
When starting by inputting the external command signal, the start complete signal
[X10, X11, X12, X13] will not turn ON.
Data required to be set
To execute positioning start with the external command signal, set parameter
Pr.42
( ) beforehand, and validate the "external command signal" with the
"External command function valid setting program (program No. 5)".
Setting
value
0 Set to "0: External positioning start".
1 Set to "1: Validate external command".
Starting time chart
V
[Y10]
[Y0]
[X0]
[X10]
[XC]
[X14]
[X8]
Fig. 6.11 Time chart for starting with external start signal
Setting details
Operation pattern
Positioning data No.
1
6 - 36
MELSEC-Q
Buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
62 212
1505 1605 1705 1805
Dwell time
1(00)
0
1
0
362 512
t