Mitsubishi Electric MELSEC-LD77MS2 User Manual page 736

[4] Setting the speed change function using an external command
Setting item
External command
Pr.42
function selection
External command
Cd.8
valid
Cd.14 New speed value
: Set the external command signal (D1) in "
Refer to Section 5.2 "List of parameters" and Section 5.7 "List of control data" for details on the setting details.
[LD77MS4 operation example]
Positioning start signal
PLC READY signal
All axis servo ON
READY signal
Start complete signal
BUSY signal
Positioning complete signal
Error detection signal
External command signal
Pr. 42 External command function selection
Md.40 In speed change processing flag
Cd. 8 External command valid
Cd. 14 New speed value
Fig. 13. 25 Time chart for changing the speed using an external command signal
signal
The speed can also be changed using an "external command signal".
The following shows the data settings and sequence program example for
changing the control speed of axis 1 using an "external command signal". (In this
example, the control speed is changed to "10000.00mm/min".)
(1) Set the following data to change the speed using an external command
signal.
(Use the speed change time chart shown in section (2) below as a reference,
and set using the sequence program shown in section (3).)
Setting
value
1 Set "1: External speed change request".
1 Set "1: Validate the external command".
1000000 Set the new speed.
Pr.95
(2) The following shows the speed change time chart.
V
[Y10]
[Y0]
[Y1]
[X0]
[X10]
[XC]
[X14]
[X8]
Setting details
External command signal selection
1
0 1
0 1
1000000
(Note): Refer to Section 3.3 for input/output signal of LD77MS16.
13 - 46
Chapter 13 Control Sub Functions
Buffer memory address
LD77MS2
LD77MS4
62+150n
1505+100n 4305+100n
1514+100n
1515+100n
" at LD77MS16 use.
Dwell time
0
LD77MS16
4314+100n
4315+100n
n: Axis No.-1
t