Iec 60870-5-104 Protocol I5Clprt; Self-Supervision - ABB RELION REX640 Technical Manual

1MRS759142 F
3.2.16

IEC 60870-5-104 protocol I5CLPRT

3.2.16.1 Function block
Figure 22: Function block
3.2.16.2 Functionality
The function block represents one IEC 60870-5-104 TCP/IP server protocol instance
in the protection relay.
An IEC 60870-5-104 server protocol instance is activated if the function block
instance is added to the application configuration. The setting
be "On".
The protocol optionally supports secure authentication version with symmetric
keys. The implementation follows the IEC 62351-5 security standard specification
and the descriptions in the pro-tocol standard part IEC 60870-5-7 "Transmission
procedures, extension for secure communica-tion". Functionality is limited to single
user mode only.
The STATUS output of the function block is active if IEC 60870-5-104 client activity is
noticed on the communication interface within 15 seconds.
The function block input IT_FRZ relates to the IEC 610870-5-104 integration totals
counter objects defined in the protection relay. The IT_FRZ input can be configured
for external counter freezing.
By default no IEC 60870-5-104 data objects are mapped to the protocol instance.
Protocol data can be added and modified using Communication Management in
PCM600.
For more information on the IEC 60870-5-104 server protocol, see the IEC
60870-5-104 communication protocol manual.
3.3

Self-supervision

The protection relay's extensive self-supervision system continuously supervises the
relay's software, hardware and certain external circuits. It handles the run-time fault
situation and informs the user about a fault via the LHMI, the relay's main unit
power module Ready LED and through the communication channels. The target
of the self-supervision is to safeguard the relay's reliability by increasing both
dependability and security. The dependability can be described as the relay's ability
to operate when required. The security can be described as the relay scheme's
ability to refrain from operating when not required. The dependability is increased
by letting the system operators know about the problem, giving them a chance
to take the necessary actions as soon as possible. The security is increased by
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