MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D - Manual (Page 547)

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MELSEC-Q
12 CONTROL SUB FUNCTIONS
[2] Precautions during control
(1) Before teaching, a "machine OPR" must be carried out to establish the OP.
(When a current value changing, etc., is carried out, " Md.20 Current feed
value" may not show absolute addresses having the OP as a reference.)
(2) Teaching cannot be carried out for positions to which movement cannot be
executed by manual control (positions to which the workpiece cannot
physically move). (During center point designation circular interpolation
control, etc., teaching of " Da.7 Arc address" cannot be carried out if the
center point of the arc is not within the moveable range of the workpiece.)
(3) Writing to the flash ROM can be executed up to 100,000 times.
If writing to the flash ROM exceeds 100,000 times, the writing may become
impossible (assured value is up to 100,000 times).
If an error (error code: 805) occurs when writing to the flash ROM has been
completed, check whether or not the program is created so as to write
continuously to the flash ROM.
[3] Data used in teaching
The following control data is used in teaching.
Buffer memory address
Setting item
Setting
value
Setting details Axis
1
Axis
2
Axis
3
Axis
4
Cd.1
Flash ROM write
request
1
Write the set details to the flash ROM (backup
the changed data).
1900
Cd.38
Teaching data
selection
Sets to which "current feed value" is written.
0: Written to " Da.6 Positioning
address/movement amount".
1: Written to " Da.7 Arc address".
1548 1648 1748 1848
Cd.39
Teaching
positioning data
No.
Designates the data to be taught.
(Teaching is carried out when the setting value
is 1 to 600.)
When teaching has been completed, the QD75
is zero cleared in the initial stage.
1549 1649 1749 1849
Refer to Section 5.7 "List of control data" for details on the setting details.