Lenze i700 - Manual (Page 21)

Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
21
2 Parameter handling
2.3 Cyclic redundancy check (CRC) - parameter set comparison on the basis of the checksum
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2.3 Cyclic redundancy check (CRC) - parameter set comparison on the basis of the checksum
Each parameter set features an individual checksum (CRC32), which is composed of the settings of
all storable indexes (P-flag) of the parameter set. When a setting changes, there is also a change in
the checksum.
Cyclic redundancy check (CRC):
By comparison of the checksums of parameter sets it can be determined very quickly whether
parameter sets are identical or not. In particular, it is thus determined for the i700 servo inverter
whether the parameter set stored in the controller is identical to that in the i700 servo inverter and
therefore does not have to be loaded again.
0x2030 - Parameter set: Validity check (CRC)
Checksum for quick comparison of the storage parameter set (par001.i7psf)
• If the checksum shown here is identical to the checksum of the parameter set file stored in the Lenze Controller,
it is not necessary to write the parameter set file to the i700 servo inverter.
• If the checksums are different, however, there are deviations between the parameter set available in the Lenze
Controller and that in the i700 servo inverter.
• The checksum cannot be used for comparison of the total parameter set (par000.i7psf).
Display area (min. value | unit | max. value) Initialisation
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 Write access  CINH  OSC  P  RX  TX UNSIGNED_32