10
10.4 COM 1 Interface
127Digital Fault Recorder, SIMEAS R-PMU, Manual
E50417-H1076-C360-A5, Release 10.2012
10.4.3 Star Coupler
The star coupler enables the connection of several SIMEAS R-PMU devices to an evaluation PC
or DAKON using the optical interfaces. Only passive star couplers (e. g. mini star coupler
7XV5450...) are supported. The connection between the SIMEAS R-PMU and the evaluation PC
or DAKON using optical fibres can thus be established without interferences.
The optical star coupler distributes the messages of the OSCOP P software to all connected
SIMEAS R-PMU devices. If the star couplers are cascaded, even more SIMEAS R-PMU devices
can be addressed. The messages are provided with an address, thus ensuring that only the
addressed SIMEAS R-PMU will respond.
Please connect the components as shown below:
Figure 10-9 Connection via star coupler
Note
A star coupler address has to be assigned to the SIMEAS R-PMU, see section 12.7.1.
Note
The connection of a SIMEAS R-PMU to a PDC via external star couplers is not supported.
FO converter
Auswerte-PC
SIMEAS R-PMU
COM 1 data interface
Rear panel
FO converter
FO connection
Star coupler
Auswerte-PC
Evaluation PC
Connection of
the star coupler
to an RS232
interface
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