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Smart Managed Compact Switch
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PHOENIX CONTACT 8089_en_03
9.3.1 Alarms in WBM
In “PROFINET” mode, the “PROFINET Alarms” web page appears in the navigation bar
under “Switch Station, Diagnostics”. Here, all alarms supported by the IO device can be ac-
tivated. The PROFINET alarms are sent to the controller by the IO devices. From there they
can be read from the diagnostic archive using “Diag+” (version 2.0 is included in Service
Pack 1 for PC Worx 5.00.26).
Figure 9-4 PROFINET alarms in WBM
9.4 Process data communication
9.4.1 Control word
The control word is a special process data item used to make settings which are not to be
executed via a conventional process data item.
A command consisting of two bytes can be written to the control word of the management
agent. The device responds to this with the same command in the status word. Byte 0 spec-
ifies the action and the new status; byte 1 specifies the port number. If a command is to
apply to all the ports, the value 0xFF can be sent instead of the port number. A command
should only be sent once, but never in a process data communication cycle.
The settings made for the PROFINET alarms can be saved with the configuration. The
controller can transmit a different alarm configuration to the switch and therefore overwrite
the configuration settings.
Table 9-1 Assignment of the control word
Action Status Byte 0 Byte 1
Link monitoring On 0x01 Port or 0xFF
Off 0x02 Port or 0xFF
POF SCRJ diagnostics On 0x03 Port or 0xFF
Off 0x04 Port or 0xFF
Power supply On 0x05 0x00
Off 0x06 0x00