Mitsubishi Electric MELSEC-LD77MS2 User Manual page 752

Setting item
Target position
change value
Cd.27
(New address)
Target position
change value
Cd.28
(New speed)
Target position
change request
Cd.29
flag
: Refer to Section 5.7 "List of control data" for details on the setting details.
[LD77MS4 operation example]
Positioning start signal [Y10]
PLC READY signal [Y0]
All axis servo ON [Y1]
READY signal [X0]
Start complete signal [X10]
BUSY signal [XC]
Positioning complete signal [X14]
Error detection signal [X8]
Cd.27
Cd.28
Cd.29
[3] Method of setting target position change function from PLC CPU
The following table and chart show the example of a data setting and sequence
program used to change the target position of the axis 1 by the command from
the PLC CPU, respectively. (example in which the target position value and
command speed are changed to a new target position of "300.0 m" and a new
command speed of "10000.00 mm/min".)
(1) The following data is set.
(Referring to the target position change time chart shown in item (2) below,
carry out the setting with the sequence program shown in item (3).)
Setting
value
3000
1000000 Set the new speed.
1
(2) The following shows the time chart for target position change.
V
Target position change value
(New address)
Target position change value
(New speed)
Target position change request
flag
Fig. 13.32 Time chart for target position change from PLC CPU
Setting details
Set the new address.
Set "1: Requests a change in the target
position".
0
(Note): Refer to Section 3.3 for input/output signal of LD77MS16.
13 - 62
Chapter 13 Control Sub Functions
Buffer memory address
LD77MS2
LD77MS4
1534+100n
1535+100n
1536+100n
1537+100n
1538+100n 4338+100n
Dwell time
3000
1000000
0
1
LD77MS16
4334+100n
4335+100n
4336+100n
4337+100n
n: Axis No.-1
t