Mitsubishi Electronics MR-J2S- A 26214 450, 36000 1 131072 4, 64 360 359.995

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5. PARAMETERS
(b) Conveyor setting example
For rotation in increments of 0.01 per pulse
Machine specifications
Table : 360 /rev
Reduction ratio: n 4/64
Servo motor resolution: Pt 131072 [pulses/rev]
Table
Timing belt : 4/64
Servo motor
131072 [pulse/rev]
CDV
CMX Pt 131072 65536
1125
0.01 4/64 360 .................................................................................(5.1)
Since CMX is not within the setting range in thi s status, it must be reduced to the lowest term.
When CMX has been reduced to a value within the setting range, round off the value to the
nearest unit.
CDV
CMX 65536
1125 26214.4 450 26214 450
Hence, set 26214 to CMX and 450 to CDV.
POINT
For unlimited one-way rotation, e.g. an index table, indexing positions will
be missed due to cumulative error produced by rounding off.
For example, entering a command of 36000 pulses in the above example
causes the table to rotate only:
26214
450
36000 1
131072 4 64 360 359.995
Therefore, indexing cannot be done in the same position on the table.
(2) Instructions for reduction
The calculated value before reduction must be as near as possible to the calculated value after
reduction.
In the case of (1), (b) in this section, an error will be sm al le r if re d uc tio n is m ade to provide no fraction
for CDV. The fraction of Expression (5.1) before reduction is calculated as follows.
CDV
CMX 65536
1125 58.25422....................................................................................................................(5.2)
The result of reduction to provide no fraction for CMX is as follow s.
CDV
CMX 65536
1125 32768 562.5 32768 563 58.20249.................................................................................... (5.3)
The result of reduction to provide no fraction for CDV is as follow s.
CDV
CMX 65536
1125 26214.4 450 26214 450 58.25333.................................................................................. (5.4)
As a result, it is understood that the value nearer to the calculation result of Expression (5.2) is the
result of Expression (5.4). Accordingly, the set values of (1), (b) in this section are CMX 26214,
CDV 450.