IEC 60870-5-104 module: Difference between revisions
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Revision as of 15:05, 11 May 2021
The IEC 60870-5-104 module shows information about IEC 60870-5-104 traffic, sequence counter correctness and response times.
Overview
Values about packets, bytes, packets per second and bytes per second of IEC 60870-5-104 traffic are shown together with a graph over time. A PCAP button allows for capturing that traffic.
A sequence counter analysis is performed per Application Service Data Unit (ASDU). Several counters provide information about:
- Sequence number repeated: For two subsequent ASDUs the sequence number was exactly the same.
- Sequence number too high: Between two subsequent ASDUs the sequence number did not increase by 1 but with a higher value. This is an indication about a loss.
- Sequence number too low: Between two subsequent ASDUs the sequence number did not increase by 1. The latter ASDU had a lower value.
Please note that there may be several ASDUs in one packet.
A response time calculation is performed between Act and ActCon ASDUs ans its min, average and max values are shown.
Connections
All IEC 60870-5-104 connections with their IPs are shown. Traffic counter, counter about sequence numbers, loss and response timed are shown together with history graphs. The graph can be switched by clicking on the small graph icon in the graph title. The PCAP button allows for capturing this particular connection.