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Table of contents
SIMATIC IPC227G
Operating Instructions, 06/2021, A5E50059933-AA
7
7.5.3.3
USB 2.0 pin header ............................................................................................................ 79
7.5.4
System resources ............................................................................................................... 79
7.5.5
Input/output address areas ................................................................................................. 80
7.5.5.1
Overview of the internal module registers .......................................................................... 80
7.5.5.2
Watchdog control register .................................................................................................. 80
7.5.5.3
Watchdog counter register ................................................................................................. 80
7.5.5.4
Watchdog state register ..................................................................................................... 81
7.5.5.5
Control register user LED L1/L2/L3 ...................................................................................... 81
7.5.5.6
Battery status register ........................................................................................................ 81
7.5.5.7
NVRAM address register ..................................................................................................... 82
7.6
BIOS description ................................................................................................................ 82
7.6.1
Overview ........................................................................................................................... 82
7.6.2
BIOS update ....................................................................................................................... 83
7.6.3
Alarm, error and system messages ..................................................................................... 85
A
Technical support ................................................................................................................................ 86
A.1
Service and support ........................................................................................................... 86
A.2
Troubleshooting ................................................................................................................ 87
A.3
Notes on the use of third-party modules ............................................................................. 88
B
Markings and symbols ......................................................................................................................... 89
B.1
Overview ........................................................................................................................... 89
B.2
Safety ................................................................................................................................ 89
B.3
Operator controls............................................................................................................... 89
B.4
Certificates, approvals and markings .................................................................................. 90
B.5
Interfaces .......................................................................................................................... 91
C
List of abbreviations ............................................................................................................................ 92
Glossary ............................................................................................................................................... 95
Index .................................................................................................................................................. 103