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Section 4
IEC 60870-5-103
TYPE
<21>
<24>
<25>
Timeouts
•
Protocol time-out <50 ms as defined in the IEC recommendation applies for the protocol.
•
When a command to upload the disturbance recorder data is issued, the data has to be
transferred from the Bay Unit to the Central Unit first before they are transferred via the
IEC bus. The timeout from the instant the upload command is issued to the receipt of the
data varies in relation to the length of the disturbance record. The following applies:
STP timeout <2.5 minutes per 1 second of disturbance record data (4I+4U, 2400 Hz).
•
Once the transfer of disturbance recorder data has started, the timeout changes to:
Transfer timeout <1 Minute
26
Description
Generic command
Order for disturbance data transmission
Acknowledgement for disturbance data transmission
© 2019 - 2020 Hitachi Power Grids. All rights reserved
Distributed busbar protection REB500
Communication protocol manual IEC 60870-5-103
1MRK 511 451-UEN Rev. C
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