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MELSEC-
A
9 MAIN POSITIONING CONTROL
Setting method for the current value change function
The following shows an example of a sequence program and data setting to
change the current value to a new value with the positioning start signal. (The "
Current feed value (RWrn + 0 to 1, RWrn + 8 to 9)" is changed to "5000.0
m" in
the example shown.)
(1) Set the following data.
(Set with the sequence program shown in (3), while referring to the start time
chart shown in (2).)
Setting item
Setting
value
Setting details
Remote register
Axis 1 Axis 2
New current value 50000
Set the new "Current feed value
(RWrn +0 to 1, RWrn +8 to 9)".
RWwm + 2 to 3 RWwm + 10 to 11
Positioning start No. 9003
Set the start No. "9003" for the
current value change.
RWwm RWwm + 8
* Refer to section "3.5 Remote registers " for details on the setting details.
(2) The following shows a start time chart.
Positioning start signal
Remote station
READY signal
D75P2 READY signal
Start complete signal
BUSY signal
Positioning complete signal
9003
V
t
Error detection signal
50000
Start of data No. 9003
Data No. during positioning execution
Address during positioning execution
Current feed value [RWrn+0 to 1]
Positioning start No. [RWrn]
New current value [RWrn+2 to 3]
50000
[RY(n+1)0]
[RX(n+7)B]
[RXn0]
[RXn1]
[RXn4]
[RXn7]
[RXnA]
Fig. 9.13 Current value change using the start No. (No. 9003) for a current value change