Beckhoff CU1521 Series - Version Identification of CU Switches

Foreword
CU1521-xxxx, CU1561 11Version: 2.5
1.6.2 Version identification of CU Switches
The serial number/ data code for Beckhoff IO devices is usually the 8-digit number printed on the device or
on a sticker. The serial number indicates the configuration in delivery state and therefore refers to a whole
production batch, without distinguishing the individual modules of a batch.
Structure of the serial number: KKYYFFHH
KK - week of production (CW, calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with serial number 12 06 3A 02:
12 - production week 12
06 - production year 2006
3A - firmware version 3A
02 - hardware version 02
Fig.1: CU1521 switch with serial number 4820/ and the unique Beckhoff Traceability Number (BTN)
00007su0