Mitsubishi A1SD75M1, User Manual

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12 - 48
MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
(4) Setting the speed change function using an external start signal
The speed can also be changed using an "external start signal".
The following shows the data settings and sequence program example for
changing the control speed of axis 1 using an "external start signal". (In this
example, the control speed is changed to "10000.00mm/min".)
(a) Set the following data to change the speed using an external start signal.
(Use the start time chart shown in section (2) below as a reference, and set
using the sequence program shown in section (3).)
Buffer memory address
Setting item
Setting
value
Setting details
Axis 1 Axis 2 Axis 3
Pr.43
External start
function selection
1 Set "1: External speed change request". 62 212 362
Cd.16
New speed value 1000000 Set the new speed.
1156
1157 1206
1207 1256
1257
Cd.25
External start valid
1 Set "1: Validate the external start". 1171 1221 1271
* Refer to section "5.2 List of parameters" and "5.7 List of control data" for details on the setting details.
(b) The following shows the speed change time chart.
Pr.43 External start function selection
Cd. 16 New speed value
V
t
1000000
0
1 0
0 1
1
0
Md.50 In speed change processing plug
Cd.25 External start valid
Dwell time
BUSY signal
Error detection signal
PLC READY signal
Positioning start signal
Positioning complete signal
AD75 READY signal
Start complete signal
[Y10]
[X4]
[X0]
[Y1D]
[X1]
[XA]
[X7]
External start signal
Fig. 12.26 Time chart for changing the speed using an external start signal