ABB REL670 2.2 IEC, Applications Manual

Page: 113 / 908

All the frames (the header frame, configuration frame, command frame and data
frame) are communicated over the same TCP port. The client can request (by
sending a command frame) a configuration and/or header via the TCP channel and
the requested configuration and/or header will be sent back to the client (as
Configuration frame/Header frame) over the same TCP channel.
Once the TCP client connects to the IED, the client has to necessarily send a
command frame to start a communication. As shown in Figure
32 , the IED can
support 2 PMUREPORT instances and the client has to specify the PMU ID Code
in order to know which PMUREPORT data needs to be sent out to that client. In
this figure, X and Y are referring to the user-defined PMU ID Codes for
PMUREPORT instances 1 or 2, respectively. It is up to the TCP client to decide
which PMUREPORT function block shall communicate with that client. Upon
successful reception of the first command by the IED, the PMU ID will be
extracted out of the command; if there is a PMUREPORT instance configured in
the IED with matching PMU ID, then the client connection over TCP with the IED
will be established and further communication will take place. Otherwise, the
connection will be terminated and the
TCPCtrlCfgErrCnt is incremented in the
PMU Diagnostics on the Local HMI under Main menu/Diagnostics/
Communication/PMU diagnostics/PMUSTATUS:1
It is possible to turn off/on the TCP data communication by sending a IEEE1344 or
C37.118 command frame remotely from the client to the PMU containing
RTDOFF/RTDON command.
At any given point of time maximum of 8 TCP clients can be connected to the IED
for IEEE1344/C37.118 protocol. If there is an attempt made by the 9th client, the
connection to the new client will be terminated without influencing the connection
of the other clients already connected. A list of active clients can be seen on the
Local HMI in the diagnostics menu under
Main menu/Diagnostics/
Communication/PMU diagnostics/PMUSTATUS:1
6.1.3.2 Short guidance for use of UDP
GUID-F5BCBBF7-4EED-4E79-9E86-AF046D201BB1 v3
The IED supports maximum of 6 concurrent UDP streams. They can be
individually configured to send IEEE1344 or C37.118 data frames as unicast /
multicast. Note that [x] at the end of each parameter is referring to the UDP stream
number (UDP client group) and is a number between 1 and 6. Each of the 6 UDP
groups in the IED has the following settings:
1. SendDataUDP[x] – Enable / disable UDP data stream
2. ProtocolOnUDP[x] – Send IEEE1344 or C37.118 on UDP
3. PMUReportUDP[x] – Instance number of PMUREPORT function block that
must send data on this UDP stream (UDP client group[x])
4. UDPDestAddres[x] – UDP destination address for UDP client group[x]
(unicast / multicast address range)
1MRK 506 369-UEN B
Section 6
Wide area measurement system
Line distance protection REL670 2.2 IEC 107
Application manual