Parameter, Checksum, Version, Password - Siemens SINUMERIK 840D sl Function Manual

Safety Functions integrated in the drive
5.1 General information about SINAMICS Safety Integrated
5.1.4

Parameter, checksum, version, password

Properties of Safety Integrated parameters
The following applies to Safety Integrated parameters:
● They are kept separate for each monitoring channel.
● At power up, a checksum (Cyclic Redundancy Check, CRC) over the Safety parameters is
generated and checked. The display parameters are not contained in the CRC.
● Data management: The parameters are stored on the non-volatile CompactFlash card.
● Factory settings for safety parameters
– You can only reset the safety parameters to the factory setting on a drive-specific basis
– All the factory settings can be restored (p0976 = 1 and p0009 = 30 on the Control Unit)
● They are password-protected against accidental or unauthorized changes.
Note
The following safety parameters are not protected by the safety password:
● p9370 SI Motion acceptance test mode (Motor Module)
● p9570 SI Motion acceptance test mode (Control Unit)
Checking the checksum
For each monitoring channel, the safety parameters include one parameter for the actual
checksum for the safety parameters that have undergone a checksum check.
During commissioning, the actual checksum must be transferred to the corresponding
parameter for the reference checksum. This can be done for all checksums of a drive object
at the same time with parameter p9701.
Basic Functions
● r9798 SI actual checksum SI parameters (Control Unit)
● p9799 SI reference checksum SI parameters (Control Unit)
● r9898 SI actual checksum SI parameters (Motor Module)
● p9899 SI reference checksum SI parameters (Motor Module)
Each time the system boots (powers up), the actual checksum is calculated using the safety
parameters and then compared with the reference checksum. If the actual and specified
reference checksums are different, fault F01650 or F30650 is output and an acceptance test
requested.
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using p0970 or p3900 when the safety functions are not enabled (p9601 = p9801 = 0).
even when the safety functions are enabled (p9601 = p9801 ≠ 0).
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Safety Integrated