BECKHOFF KL1904 - Manual (Page 8)

Foreword
6 KL1904
1.2.5 Documentation issue status
Version Comment
2.2.1  Certificate updated
2.2.0  Company address amended
 Document origin added
 Version history added
 EN954 example removed
 Safety parameters extended
2.1.1  Reference to EN 60068-2-29 removed
2.1.0  Version and date updated
2.0.0  Description of the configuration in the TwinCAT System Manager added
 Certificates added
1.2.3  Diagrams updated
1.2.2  LED and pin assignment corrected
1.2.1  LED descriptions added
1.2.0  Technical data added
 Precise specification of permitted operating environment
1.1.0  Operation of the KL1904 under TwinCAT added
1.0.1  Pin assignment added
1.0.0  First released version