Siemens SITRANS PCS 7 Function Manual page 42

Panel blocks, general
3.1 Messaging
S7 messaging
The panel function block PMag6T offers a word input as a message interface to provide the bit
messaging for creating messages at the operator panel. In addition, the messages are
automatically generated according to the message number procedure.
The technological block S7Mag6T generates the messages using an integrated calling of the
AlarmDQ/Alarm_SC functions and sends them to the operator station (OS) and the operator
panel (OP). The controller transmits a message number and message text to the control units.
In the message view of the WinCC-flexible faceplate, the message classes "S7 messages", "S7
controller control system messages" and "S7 warning" are displayed. Note that messages of
the message class "S7 process message" or "S7 tolerance" are not displayed by the system
broken down by instances in the message view of the WinCC-flexible faceplate. Messages of
these classes must be displayed by a separate message view in the WinCC-flexible project.
A separate filter is required for the instance granular view of the messages in the message view
of the WinCC-flexible faceplate. This comprises the instance DB number of the panel function
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SITRANS Library for PCS 7
Function Manual, 05/2019, A5E35351976-11