Diagnostic Counters - ABB RELION 620 Series Communication Protocol Manual

1MRS757647 C
3.2.2
620 series
Communication Protocol Manual
The COM port connection type, optical ST or EIA-485 connection,
star or loop topology, idle state (light on or light off) and the bias and
bus termination are selected with the COM port jumpers.
Depending on the communication card, the optical connection may be
available only for one COM port (1 or 2). See the technical manual for
more information.
Once the COMn port is configured, the next step is to attach the IEC 60870-5-103
protocol to the port. This is done by the setting parameters of the communication
protocol in question. The IEC 60870-5-103 protocol setting parameters are located in
Configuration/Communication/IEC 60870-5-103/I3C0n.
For example, serial port has to be set to "COM2" and Address to "25" to attach IEC
60870-5-103 to the COM2 port and assign the link unit address to 25.
• Serial port = "COM2"
• Address = "25"

Diagnostic counters

The IEC 60870-5-103 protocol diagnostic counters can be viewed via menu path
Monitoring/Communication/IEC 60870-5-103/I3C0n. Counters related to the IEC
60870-5-103 link instances 1 and 2 have the suffixes (n) 1 and 2. The diagnostic
counters show complete IEC 60870-5-103 link frames and link errors. The serial
drivers (COMn) have their own diagnostic counters for lower-level serial
communication character, error and link messages. The COMn counters count all the
messages on the serial line. COMn Link status is "Up" when IEC 103 protocol is
defined to the port, the cable is correctly connected and there is an IEC 103 master
polling on the line. It is possible to reset the diagnostic counters by setting the Reset
counters value to "True". The IEC 60870-5-103 instance Status is "True" when
COMn Link status is "Up" and there is an IEC 103 master polling on the line. When the
Status of the IEC 60870-5-103 instance has never been "True", the diagnostic
counters belonging to the instance contain value "-1". Counter value "0" in turn means
that the instance is in use, but no messages have been detected.
The diagnostic status indication automatically turns from "True" to "False" when
there has not been any incoming IEC 60870-5-103 messages directed to the IED
within 15 seconds. The STATUS indication output is also visible in the I3CLPRT
function blocks through the Application Configuration tool (ACT) in PCM600. This
output can be used, for example, to lit a dedicated "Communication Error" LED on the
front panel.
Vendor-specific implementation
Section 3
11