BECKHOFF EL9xxx - Manual (Page 10)

Foreword
Exceptions can occur in the IP67 area , where the following syntax can be used (see respective device
documentation):
Syntax: D ww yy x y z u
D ­ prefix designation
ww ­ calendar week
yy ­ year
x ­ firmware version of the bus PCB
y ­ hardware version of the bus PCB
z ­ firmware version of the I/O PCB
u ­ hardware version of the I/O PCB
Example: D.22081501 calendar week 22 of the year 2008 firmware version of bus PCB: 1 hardware version
of bus PCB: 5 firmware version of I/O PCB: 0 (no firmware necessary for this PCB) hardware version of I/O
PCB: 1
Unique serial number/ID
Beyond that there are some series in which each individual module has its own unique, sequential serial
number.
See also the further documentation in the area
• IP67: EtherCAT Box
• Safety: TwinSafe
Examples of markings:
Fig. 1: EL5021 EL terminal, standard IP20 IO device with batch number and revision ID (since 2014/01)
Fig. 2: EK1100 EtherCAT coupler, standard IP20 IO device with batch number
EL9xxx 10 Version 3.1