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System variables
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PHOENIX CONTACT
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8
System variables
8.1
General notes
This section describes the system variables that are available for the controller.
The controller has a register set, which is used for diagnostics and easy control of the con-
troller.
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 markers, global variables).
8.2
System variables grouped into structures
Certain system variables of the RFC 4072S are grouped into structures in
PLCnext Engineer. You can display these system variables and elements of the structure in
the PLCnext Engineer Init Value Configuration editor.
Figure 8-1
System variables grouped into structures
Содержание RFC 4072S
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