Mitsubishi Electronics QD75D Pr.41 Allowable circular interpolation error width, With calculation

5DATA USED FOR POSITIONING CONTROL

[Table 1]

MELSEC-Q

		Value set with peripheral device		Value set with sequence program
Pr.1	setting value
		(unit)		(unit)
0	: mm	0 to 10000.0	(∝ m)	0 to 100000	(⋅ 10-1∝m)
1	: inch	0 to 1.00000	(inch)	0 to 100000	(⋅ 10-5inch)
2	: degree	0 to 1.00000	(degree)	0 to 100000	(⋅ 10-5degree)
3	: pulse	0 to 100000 (pulse)		0 to 100000	(pulse)

Pr.41

Allowable circular interpolation error width

With the "allowable circular interpolation error width", the allowable error range of the calculated arc path and end point address is set. If the error of the calculated arc path and end point address is within the set range, circular interpolation will be carried out to the set end point address while compensating the error with spiral interpolation.

The allowable circular interpolation error width is set in the following axis buffer memory addresses.

•If axis 1 is the reference axis, set in the axis 1 buffer memory address [60, 61].

•If axis 2 is the reference axis, set in the axis 2 buffer memory address [210, 211].

•If axis 3 is the reference axis, set in the axis 3 buffer memory address [360, 361].

•If axis 4 is the reference axis, set in the axis 4 buffer memory address [510, 511].

Path with spiral interpolation	Error
	End point address
	with calculation
	End point address

Start point address Center point address

With circular interpolation control using the center point designation, the arc path calculated with the start point address and center point address and the end point address may deviate.

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