252
8 CONTROL SUB FUNCTIONS
8.5 Functions to Change the Control Details
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
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
Setting item Setting
value
Setting details Buffer memory address
[Pr.42] External command function selection 1 Set "1: External speed change request". 62+150n
[Cd.8] External command valid 1 Set "1: Validate the external command". 4305+100n
[Cd.14] New speed value 1000000 Set the new speed. 4314+100n
4315+100n
PLC READY signal [Y0]
READY signal [X0]
BUSY signal [X10]
V
t
Positioning start signal [Y10]
[Cd.8] External command valid
External command signal
0
1
0
[Cd.14] New speed value
1
Dwell time
All axis servo ON [Y1]
1
1000000
0
Start complete signal
([Md.31] Status: b14)
Positioning complete signal
([Md.31] Status: b15)
Error detection signal
([Md.31] Status: b13)
[Pr.42] External command
function selection
[Md.40] In speed change
processing flag
To Next Page
Loading...
