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MELSEC-A
9 MAIN POSITIONING CONTROL
9.2.10 Current value change
When the current value is changed to a new value, control is carried out in which the
"
Md.29 Current feed value" of the stopped axis is changed to a random address set
by the user. (The "
Md.30 Machine feed value" is not changed when the current value
is changed.)
The two methods for changing the current value are shown below.
(1) Current value change using the positioning data
(2) Current value change using the start No. (No. 9003) for a current value
change
The current value change using method [1] is used during continuous positioning of
multiple blocks, etc.
(1) Current value change using the positioning data
Operation chart
The following chart shows the operation timing for a current value change. The
"
Md.29 Current feed value" is changed to the value set in "
Da.5
Positioning
address/movement amount" when the positioning start signal turns ON.
Current value changes to the positioning
address designated by the positioning
data of the current value change
Positioning start signal
50000
0
OFF
ON
Md.29 Current feed value
The above chart shows an example
when the positioning address is "0".
[Y10,Y11,Y12]
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