Delta MS300 Series User Manual page 767

Chapter 16 PLC Function ApplicationsMS300
Recommendation: Be cautious when using the WPRA command. When writing parameters, most
parameters are recorded when they are written, and these parameters may
only be revised 10 6 times: a memory write error may occur if parameters are
written more than (MS)10 6 or (MH)10 9 times.
The following commonly-used parameters have special treatment, so there are
no limits for the number of times that they can be written.
Pr.00-10: Control method
Pr.00-11: Speed mode selection
Pr.00-27: User-defined value
Pr.01-12: Acceleration time 1
Pr.01-13: Deceleration time 1
Pr.01-14: Acceleration time 2
Pr.01-15: Deceleration time 2
Pr.01-16: Acceleration time 3
Pr.01-17: Deceleration time 3
Pr.01-18: Acceleration time 4
Pr.01-19: Deceleration time 4
Pr.02-12: Select MI Conversion Time mode
Pr.02-18: Select MO Conversion Time mode
Pr.04-50–Pr.04-69: PLC register parameter 0–19
Pr.08-04: Upper limit of integral control
Pr.08-05: PID output upper limit
Pr.10-17: Electronic gear A
Pr.10-18: Electronic gear B
Pr.11-34: Torque command
The number of times a parameter is written is based on whether the written
value is modified. For instance, writing the same value 100 times at the same
time counts as writing only once. When writing a PLC program, if you are not
sure the usage of the WPRA command, it is recommended that you use the
WPRP command.
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