Beckhoff TwinSAFE EL6900 - Service Life, Maintenance, and Disposal; Service Life and Maintenance

Service life
EL6900 61Version: 3.1.0
6 Service life
The TwinSAFE terminals are designed for a service life of 20 years.
Due to the high diagnostic coverage within the lifecycle no special proof tests are required.
The TwinSAFE terminals bear a date code, which is composed as follows:
Datecode: CWYYSWHW
Legend:
CW: Calendar week of manufacture
YY: Year of manufacture
SW: Software version
HW: Hardware version
Sample: DateCode 17110500
Calendar week: 17
Year: 2011
Software version: 05
Hardware version: 00
In addition the TwinSAFE terminals bear a unique serial number.
00000000
17110500
Fig.54: Unique serial number of a TwinSAFE terminal