Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 62

Control details
■Length of time before the positioning starts
While "[Cd:43] Analysis mode settings" is set to "1: Pre-analysis mode", the positioning data specified in "[Cd.3] Positioning
start No." is analyzed. The following shows the start timing of positioning data analysis.
• While transitioning to pre-analysis mode (Timing when the setting of "[Cd.43] Analysis mode settings" is changed to "1: Pre-
analysis mode")
• When the positioning start No. is changed after the analysis of the positioning data has been completed (Timing when the
setting of "[Cd.3] Positioning start No." is changed while "[Md.61] Analysis complete flag" is "1: Analysis completed")
• When the positioning operation is completed and "[Md.26] Axis operation status" turns to "0: Standby". If the M code ON
signal ([Md.31] Status: b12) is ON, however, positioning analysis will not start until the M code ON signal ([Md.31] Status:
b12) turns OFF.
Once the analysis of the positioning data is completed, "[Md.61] Analysis complete flag" turns to "1: Analysis completed". The
quick start is executed by inputting a start trigger while the "[Md.61] Analysis complete" flag is set to "1: Analysis completed".
After the quick start is implemented, the "[Md.61] Analysis complete flag" turns to "0: Analysis not completed".
The pre-analysis mode is changed to the normal analysis mode not only by setting "[Cd.43] Analysis mode" setting to "0:
Normal analysis mode", but also by the following factors. When the setting of "[Cd.43] Analysis mode setting" is changed to
"0: Normal analysis mode", the positioning data that has already been analyzed is cleared. (During interpolation control, the
positioning data is cleared when the reference axis enters normal analysis mode)
• When an error is detected
• "[Cd.190] When the PLC READY signal" is turned ON→OFF
• When the positioning operation is stopped by a stop signal
If any of the three causes described above occurs, the reference axis or interpolation axis enters the normal analysis mode in
the interpolation control.
Start trigger
[Md. 141] BUSY signal
[Md.26] Axis operation status
[Cd.43] Analysis mode setting
[Md.61] Analysis complete flag
t1
0.88 to 1.77 ms
The shortest time between the completion of the positioning control and the starting of the next positioning control is t1 + t2.
7 STARTING AND STOPPING
60
7.1 Starting
v
User operation
System operation
Standby
0: Normal analysis mode
0: Analysis not completed
OFF
Analyzing
1: Pre-analysis mode
1: Analysis completed
t1 Start trigger wait
t2
External command signal: 20 μs
Positioning start signal: 30 μs
t2
ON
Position control
0: Analysis not completed
t