Mitsubishi Electric RD77MS2 User Manual page 254

Setting method using an external command signal
The speed can also be changed using an "external command signal".
The following shows the data settings and program example for changing the control speed of axis 1 using an "external
command signal". (In this example, the control speed is changed to "10000.00 mm/min".)
• Set the following data to change the speed using an external command signal. (Set using the program referring to the
speed change time chart.)
n: Axis No. - 1
Setting item
[Pr.42] External command function selection
[Cd.8] External command valid
[Cd.14] New speed value
Set the external command signal (D1) in "[Pr.95] External command signal selection". Refer to the followings for the setting
details.
Page 407 Basic Setting, Page 504 Control Data
• The following shows the speed change time chart.
■RD77MS4 operation example
Positioning start signal [Y10]
PLC READY signal [Y0]
All axis servo ON [Y1]
READY signal [X0]
Start complete signal
([Md.31] Status: b14)
BUSY signal [X10]
Positioning complete signal
([Md.31] Status: b15)
Error detection signal
([Md.31] Status: b13)
External command signal
8 CONTROL SUB FUNCTIONS
252
8.5 Functions to Change the Control Details
Setting
value
1
1
1000000
V
[Pr.42] External command
function selection
[Md.40] In speed change
processing flag
[Cd.8] External command valid
[Cd.14] New speed value
Setting details
Set "1: External speed change request".
Set "1: Validate the external command".
Set the new speed.
1
0
1
1
0
1000000
Buffer memory address
62+150n
4305+100n
4314+100n
4315+100n
Dwell time
t
0