Documentation issue status

Version	Comment
4.2.0	Technical data updated Ex markings added to technical data Chapter IECEx - Special conditions added Chapter cFMus - Special conditions added Chapter Disposal added New title page
4.1	Chapter Instructions for ESD protection updated Technical data updated Chapter Beckhoff Identification Code (BIC) added
4.0	Migration Technical data updated Document structure updated Chapters KS2000 configuration software and Access from the user program added

Firmware (FW) and hardware (HW) versions

Documen- tation, Version	KL3041/KS3041		KL3042/KS3042		KL3044/KS3044		KL3051/KS3051		KL3052/KS3052		KL3054/KS3054
Documen- tation, Version	FW	HW	FW	HW	FW	HW	FW	HW	FW	HW	FW	HW
4.2.0	3C	08	3C	08	3B	05	3C	08	3C	08	3B	05
4.1	3C	08	3C	07	3B	04	3C	07	3C	07	3B	04
4.0	3C	08	3C	07	3B	04	3C	07	3C	07	3B	04

The firmware and hardware versions (delivery state) can be found in the serial number printed on the side of the terminal.

Structure of the serial number: WW YY FF HH

WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version

Example with serial number 35 04 1B 01:

35 - week of production 35
04 - year of production 2004
1B - firmware version 1B
01 - hardware version 01