1574   Minimum value for MinTime & MaxTime

Created: 15 Mar 2017

Status: Not Applicable

Part: Part 6 (2009-12; Edition 2)

Links:

Page: 91

Clause: 9.4.4

Paragraph:

Category: No impact on this part

Issue

The schema defines the following definition for MinTime and MaxTime
<xs:complexType name="tGSE">
<xs:complexContent>
<xs:extension base="tControlBlock">
<xs:sequence>
<xs:element name="MinTime" type="tDurationInMilliSec" minOccurs="0"/>
<xs:element name="MaxTime" type="tDurationInMilliSec" minOccurs="0"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>

But it doesnot define any range for MinTime and MaxTime . I agree that the range is vendor specific. But if a value =0 is defined for MinTime/MaxTime , as we will not be able to calculate the retransmission interval based on this figure.

Proposal

I suggest to define a value always greater than zero for the MinTime and MaxTime which can be defined in the schema.

Discussion Created Status
The value ranges and their meaning need to be defined in the communication mapping. As more than one mapping is possible, this is purposely left undefined in part 6. During respective after system configuration, when a mapping has been chosen, the system (and IED) tool can verify value correctness. 22 Mar 17 Not Applicable

 

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