Siemens SINUMERIK MC User Manual

7.6.2 Calculating the global checksums/master checksums
In addition to the checksums or signatures of the SINAMICS S120 drive and F-PLC, in the
SINUMERIK ONE Commissioning Tool, global checksums and master checksums are
displayed, which are calculated from various actual checksums from the F-PLC and SINAMICS
S120 drive. SINUMERIK MC does not compare these higher-level actual checksums with
reference checksums - and also does not save them.
By displaying these higher-level actual checksums, differences between the actual and
reference states can be easily and transparently identified.
The global checksums/master checksums are calculated as follows:
● The global checksum is the sum of the associated master checksums (see table).
● The master checksums comprise the sums of the values/parameters with actual checksums
for the calculation (see table).
If SINAMICS parameters are involved for the values being used as basis, then when making
the calculation, the sum over the following drives is generated:
– Drives, which do not have an assigned NC axis, and where the safety functions are
enabled in p9601: p9601 SI enable functions integrated in the drive (Control Unit) / SI
enable fct CU ! = 0
Table 7-2 Calculating the global checksum and the associated master checksums
Global checksum Master checksum Values/parameters used for the calculation
Global Safety Engineering
checksum
(sum of all master checksums)
F-CPU master checksum
● Signature of the safety program
● Hardware checksum of the F-PLC
Extended Safety master checksum
● r9728[0] SI Motion actual checksum SI parame‐
ters / SI Mtn act CRC
● r9728[1] SI Motion actual checksum SI parame‐
ters / SI Mtn act CRC
Extended Safety MM master check‐
sum
● r9398[0] SI Motion actual checksum SI parameters
(Motor Module) / SI Mtn act CRC MM
Drive-based master checksum
● r9798 SI actual checksum SI parameters (Control
Unit) / SI act_checksum CU
● r9898 SI actual checksum SI parameters (Motor
Module) / SI act_checksum MM
Table 7-3 Calculation of the master checksum "Safety-relevant hardware checksum"
Master checksum Parameters used for the calculation
Safety-relevant hardware
checksum
● r9728[2] SI Motion actual checksum SI parameters / SI Mtn act CRC
● r9398[1] SI Motion actual checksum SI parameters (Motor Module) / SI Mtn act CRC MM
Diagnostics
7.6 Checksums
Safety Integrated (with SINAMICS S120)
326 Commissioning Manual, 02/2020, A5E46305916B AB

Siemens SINUMERIK MC Specifications

General

Brand	Siemens
Model	SINUMERIK MC
Category	Control Systems
Language	English