Upgrading from Original SmartPAC or SmartPAC 2 to SmartPAC PRO 1145200
Instruction Sheet 27
on the Save button when the process is complete. The log is saved to a file consisting of the press
name you entered on the Add SmartPACs screen (see step 8 of Backing Up Tools, which starts on
page 19) followed by the suffix .diag. The file is saved to the destination you specified on the
SBR Settings screen (see step 3 of Backing Up Tools, which starts on page 19). The destination
folder and filename are displayed on the first line of the log, as shown in Figure A - 11.
Figure A - 11. SBR Backup/Restore Screen, Diagnostics Tab
To clear information displayed in the “Serial Activity Log” window, click on the Clear button.
Responding to a Checksum Error
A checksum error is indicated by a white question mark (?) on a red LCD on the icon for the selected
SmartPAC on the SBR screen, as shown below,
A “checksum” is a calculated number used to verify that the tool data being loaded at the SmartPAC
is identical to the settings programmed for the tool. SmartPAC calculates the checksum whenever a
tool number is programmed or tool settings are changed; the checksum is verified whenever a tool
number is loaded. When there is a discrepancy between the two sets of data, SmartPAC generates a
checksum error. Checksum calculations ensure that tool settings do not change unexpectedly.
While performing a backup, SBR calculates a checksum for the data retrieved for each tool and
compares that value with the last checksum calculated by SmartPAC following tool programming.
When the two values disagree, SBR generates a checksum error, as described above, to alert the user
that one or more backed-up tools may be corrupted.
Checksum errors do not interrupt the backup process. You can check to see which tools have
generated a checksum error by clicking on the Transaction Log tab and viewing the transactions for
your backup job displayed in the log (see Figure A - 12, in which the third item displayed in the
Transaction Log example is a checksum error).
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