Siemens SINUMERIK 840D sl Function Manual page 563

Figure 10-17
After acknowledging with softkey "OK", the actual checksums SAFE_ACT_CHECKSUM[1] /
r9728[2] for all of the axes are copied to the reference checksum SAFE_DES_CHECKSUM[1] /
p9729[2] and a recommendation is given to power on the control. This is done by pressing the
"OK" softkey.
After the system has successfully booted, the user must carry out the measures of the function
test just acknowledged in the HMI messages or in Alarm 27035 / F01680, i.e.
● Re-calibration of the actual value encoder
● Checking the SI actual value acquisition: Speeds, traversing direction, absolute position (if
required, set the user agreement)
● Document the new checksum value in SAFE_ACT_CHECKSUM[1] or r9728[2] and the last
entry in the change history in MD SAFE_CONFIG_CHANGE_DATE[0]
● Document the hardware and software version data of the new component
Alternatively, Alarm 27035 / F01680 can be acknowledged using the softkey "Acknowledge SI
data" and the softkey "Reset drive/NCK".
The user can suppress the automated internal actual value check by resetting the "user
agreement" - therefore requesting that the axis is re-calibrated with the appropriate user
agreement.
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
Acknowledging SI HW, step 2
Commissioning
10.7 Replacing a motor or encoder
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