Siemens SIMATIC PCS 7 - Installation of SIMATIC PDM; Preparing SIMATIC PDM

Installing updates and service packs
3.3 Checking plant status
Compendium Part D - Operation and Maintenance (V9.0)
Operating Manual, 02/2018, A5E43228948-AA
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The following system variables can be checked on the OS server to determine the
redundancy status of the OS server.
Meaning of the variables
Variable name
Meaning
@LocalMachineName
This variable contains the local computer name.
@RedundantServerState The variable shows the redundancy status of this server. Value = 0 ->
Undefined status (starting value); Value = 1 -> Server is master;
Value = 2 -> Server is standby; Value = 3 -> Server fault; Value = 4 ->
Server is standalone (no redundant mode).