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MELSEC-
A
9 MAIN POSITIONING CONTROL
Restrictions
(1) 2-axis circular interpolation control cannot be set in the following cases.
When "degree" is set in " Pr.1 Unit setting"
When the units set in " Pr.1 Unit setting" are different for the reference axis
and interpolation axis. ("mm" and "inch" combinations are possible.)
When "stepping motor mode" is set in " Pr.11 Stepping motor mode
selection"
When "reference axis speed" is set in " Pr.21 Interpolation speed
designation method"
(2) An error will occur and the positioning start will not be possible in the following
cases. The machine will immediately stop if the error is detected during
positioning control.
In case radius is over than "536870912(=2
29
)" which is the maximum and
acceptable radius for circular interpolation control, or in case the end address
is outside the scope of "-2147483648(-2
31
) to 2147483647(2
31
-1)".
... An error "end point setting error" (error code:526) or "outside
radiusrange" (error code: 544) will occur at positioning start.
When the center point address is outside the range of "–2147483648 (–2
31
) to
2147483647 (2
31
–1)"
... An error "auxiliary point setting error" (error code: 525) will occur at
positioning start.
When the start point address is the same as the end point address
... An error "end point setting error" (error code: 526) will occur.
When the start point address is the same as the auxiliary point address
... An error "auxiliary point setting error" (error code: 525) will occur.
When the end point address is the same as the auxiliary point address
... An error "auxiliary point setting error" (error code: 525) will occur.
When the start point address, auxiliary point address, and end point address
are in a straight line
... An error "auxiliary point setting error" (error code: 525) will occur.