3.1 Introduction ............................................................................................................................... 8
3.1.1 General ..................................................................................................................................... 8
3.1.2 What must necessarily be taken into account? ........................................................................ 9
3.1.3 Differences between maintenance and a software update with the redundant OS
server ...................................................................................................................................... 11
3.2 Checking plant configuration .................................................................................................. 12
3.3 Checking plant status.............................................................................................................. 14
3.3.1 General ................................................................................................................................... 14
3.3.2 Status of PC stations using SIMATIC Shell ............................................................................ 15
3.3.3 Time synchronization .............................................................................................................. 16
3.3.4 Status of OS connections ....................................................................................................... 16
3.3.5 Standard server settings ......................................................................................................... 18
3.3.6 Preferred server settings......................................................................................................... 20
3.3.7 Redundancy status on the OS server ..................................................................................... 22
3.3.8 Client-server connections ....................................................................................................... 26
3.3.9 Archive synchronization of the redundant OS server after a hot restart of the standby
server ...................................................................................................................................... 26
3.3.10 Process control messages ...................................................................................................... 28
3.4 Checking the WinCC channel diagnostics .............................................................................. 29
3.5 Checking the OS functionality after restarting an OS server .................................................. 31
3.6 Deactivating and activating non-redundant OS servers ......................................................... 32
3.7 Deactivating and activating redundant OS servers ................................................................ 33
3.8 Additional Information ............................................................................................................. 34
5.1 Introduction ............................................................................................................................. 44
5.2 Downloading the firmware ...................................................................................................... 44
5.3 Updating firmware of a CPU ................................................................................................... 45
5.4 Updating firmware of an H system .......................................................................................... 45
5.4.1 Updating firmware during operation ........................................................................................ 45
5.4.2 Firmware update using S7-400 Flash memory card ............................................................... 47