Rockwell Automation 2098-DSD-xxx Ultra3000 Digital Servo Drives with DeviceNet - Manual (Page 41)

Publication 2098-RM001C-EN-P – August 2002
Programming Reference 2-25
working value and is NOT saved in nonvolatile memory unless the
Save To NVMEM bit is set. The working value is lost if the drive is
reset or power cycled.
IMPORTANT
The nonvolatile memory has a limited number of
write cycles. Do not save parameter values to
nonvolatile memory (NVMEM) unless absolutely
necessary. In other words, minimize the number of
times parameter values are saved to nonvolatile
memory (NVMEM).
IMPORTANT
The drive acts on the Logic Command before reading
the Data Value. Therefore, the drive will accept the
Logic Command even though the Data Value may be
invalid. If an I/O message writes an invalid Data
Value, the drive sets the Write Data Error bit in the
Input Assembly. If the Data Value is updated via an
explicit message, the drive will return an error
response if the Data Value is invalid.