Mitsubishi Electronics QD75D, QD75P user manual Setting the speed change function from the PLC CPU

12 CONTROL SUB FUNCTIONS

MELSEC-Q

[3] Setting the speed change function from the PLC CPU

The following shows the data settings and sequence program example for changing the control speed of axis 1 from the PLC CPU. (In this example, the control speed is changed to "20.00mm/min".)

(1)Set the following data.

(Use the start time chart shown in section (2) below as a reference, and set using the sequence program shown in section (3).)

			Setting		Buffer memory address
	Setting item			Setting details	Axis	Axis	Axis	Axis
			value
					1	2	3	4
					1514	1614	1714	1814
Cd.14		New speed value	2000	Set the new speed.
					1515	1615	1715	1815
		Speed change
Cd.15			1	Set "1: Change the speed".	1516	1616	1716	1816
		request

Refer to Section 5.7 "List of control data" for details on the setting details.

(2) The following shows the speed change time chart.

Positioning start signal PLC READY signal

QD75 READY signal Start complete signal

BUSY signal

Positioning complete signal

Error detection signal

V

Dwell time

t

[Y10]

[Y0]

[X0]

[X10]

[XC]

[X14]

[X8]

Md. 40 In speed change
	processing flag	0		0
Cd. 14	New speed value			2000
Cd. 15	Speed change request	0	1	0

Fig. 12.26 Time chart for changing the speed from the PLC CPU

12 - 37