Section 3 1MAC306892-MB C
Vendor-specific implementation
20 RER620
Communication Protocol Manual
3.6.10 ASDU address length
• Min: 1
•Max: 2
• Default: 1
•Unit: bytes
In some communication frames, the ASDU address is defined. The length of ASDU
address element is configurable and should be set to the same value throughout the
network. Typical values are '1' for IEC 60870-5-101 and '2' for IEC 60870-5-104.
3.6.11 Single character response
• Enabled
• Disabled (default)
The setting allows the protective relay to respond with the single character response for
some acknowledgment frames. If used, the client must also support this feature.
3.6.12 Show bad time
• Enabled (default)
• Disabled
If the protective relay time is not synchronized properly, the time quality is marked as bad
or inaccurate. The time quality is indicated as a flag in the changed data report. If Show
bad time is set to "Disabled", the protective relay does not indicate the bad time flag which
may be useful in some systems. If the time quality indication is disabled, the client is not
able to trust the time stamped event correctness.
3.6.13 Time format
• Short: 24 bit
• Full: 56 bit
• Default: 56 bit
There are two different time stamp formats used in the IEC 60870-5 standard. The shorter
format includes only the time, and the full format includes both the date and the time. The
changed data reports include the time stamp in the format specified with the Time format
setting.
Applicable only for IEC 60870-5-101.
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