With COM port jumpers, select 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.
3.2.2
Diagnostic counters
The IEC 60870-5-103 protocol diagnostic counters can be viewed via LHMI path
Monitoring/Communication/IEC 60870-5-103/Serial
. Counters related to 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 errors. COMn counters are count all messages on the serial line. It
is possible to reset the diagnostic counters by setting the Status value to "True".
When an IEC 60870-5-103 instance has not been taken in use, 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.
Table 4:
Protocol diagnostic counters
Counter
Values (range)
Default Description
Status 1
False =
Communication
inactive
False
Status
True = Communication
active
Received frames 1
-1...2147483646
Received frames
Checksum errors 1
-1...2147483646
Checksum errors
Transmitted frames 1
-1...2147483646
Transmitted frames
Status 2
False =
Communication
inactive
False
Status
True = Communication
active
Received frames 2
-1...2147483646
Received frames
Checksum errors 2
-1...2147483646
Checksum errors
Transmitted frames 2
-1...2147483646
Transmitted frames
Internal Overflow
Internal Overflow: TRUE-System
level overflow occurred (indication
only)
Status 1
True (write)
Resets diagnostic counters 1
Status 2
True (write)
Resets diagnostic counters 2
1MRS756710 C
Section 3
Vendor-specific implementation
615 series
13
Communication Protocol Manual
Summary of Contents for Relion 615 series
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