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MELSEC-Q
9 MAJOR POSITIONING CONTROL
Restrictions
(1) 2-axis circular interpolation control cannot be set in the followin g 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" com binations are possible.)
•When "reference axis speed" is set in " Pr.20 Interpolation speed
designation method"
(2) An error will occur and the positioning start will not be possible in the f ollowing
cases. The machine will immediately stop if the error is detected dur ing
positioning control.
•When the radius exceeds "536870912 (=229)". (The maximum radius for
which circular interpolation control is poss ible is "536870912 (=229)"
... An error "Outside radius range" (error cod e: 544) will occur at positioning
start.
•When the center point address is outside the ra nge of "–2147483648 (–231) to
2147483647 (231–1)"
... A "Sub point setting error" (error code: 525) will occur at posi ti oni ng sta rt .
•When the start point address is the same as the end point address
... An "End point setting error" (error code: 526) will occur.
•When the start point address is the same as the s ub point address
... A "Sub point setting error" (error code: 525) will occur.
•When the end point address is the same as the sub point address
... A "Sub point setting error" (error code: 525) will occur.
•When the start point address, sub point address , and end point address are in
a straight line
... A "Sub point setting error" (error code: 525) will occur.