System variables and status information
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8 System variables and status information
The controller has a register set that is used for diagnostics and easy control of the controller
and the Axioline F local bus.
The diagnostic data is stored in the diagnostic status register and the diagnostic parameter
register. These registers are available to the application program as system variables (sys-
tem flags, global variables).
In the PLCnext Info Center you will find detailed descriptions of the system variables of the
following areas:
– System time
– Power supplies
– TCP_SOCKET, UDP_SOCKET, and TLS_SOCKET function blocks
– Device status
– Partition
– Task handling
– HMI status and control
– Axioline F: Diagnostic status and diagnostic parameter register
– PROFINET system variables
– INTERBUS: master diagnostic status and parameter register
A detailed description of the system variables available for the controllers can be found in
the PLCnext Info Center
.
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