Operating Instructions Chapter 3
Flexi Classic Gateways
8011834/YT28/2016-03-15 © SICK AG • Industrial Safety Systems • Germany • All rights reserved
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Subject to change without notice
Flexi Classic gateways
3.2.3 CRC1 and CRC2
High byte/low byte for the 16-bit checksum on the system configuration.
The system configuration contains all function settings, the configuration jumpers, the
number and order of the Flexi Classic modules inserted, the software versions etc. CRC1
and CRC2 together form the 16-bit checksum.
Bit 7 6 5 4 3 2 1 Bit 0
CRC1 (High byte)
CRC2 (Low byte)
We recommend you to make a note of the slot list CRC and keep this information in the
control cabinet.
Note
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