Iec 60870-5-103 Interface - Toshiba GRT100 Series Instruction Manual

4.5 IEC 60870-5-103 Interface

The GRT100 can support the IEC60870-5-103 communication protocol. This protocol is mainly
used when the relay communicates with a control system and is used to transfer the following
measurand, status data and general command from the relay to the control system.
 Measurand data: current, voltage, frequency
 Status data:
The IEC60870-5-103 function in the relay can be customized with the original software "IEC103
configurater". It runs on a personal computer (PC) connected to the relay, and can help setting of
Time-tagged messages, General command, Metering, etc. For detais of the setting method, refer
to "IEC103 configurater" manual. For the default setting of IEC60870-5-103, see Appendix O.
The protocol can be used through the RS485 port on the relay rear panel and can be also used
through the optional fibre optical interface. The relay connection is similar to Figure 4.4.1.
The relay supports two baud-rates 9.6kbps and 19.2kbps. The data transfer from the relay can be
blocked by the setting. For the settings, see the Section 4.2.6.4.
4.6 Modbus Interface
The GRT100 supports the Modbus communication protocol. This protocol is mainly used when
the relay communicates with a control system and is used to transfer the following measurement
and status data from the relay to the control system. (For details, see Appendix P.)
 Measurement data: current, voltage, active power, reactive power, frequency
 Status data: events, fault indications, counters, etc.
 Setting data
 Time setting / synchronization
The protocol can be used via the RS-485 port on the relay rear panel.
The relay supports two baud-rates 9.6kbps and 19.2kbps. These are selected by setting. See
Section 4.2.6.4.
4.7 Clock Function
The clock function (Calendar clock) is used for time-tagging for the following purposes:
 Event records
 Disturbance records
 Fault records
 Metering
UTP cable
(10Base-T)
PC
Figure 4.4.2 Relay Setting and Monitoring System (2)
events, fault indications, etc.
 103 
Other
relays
HUB.
6 F 2 S 0 7 8 9
214B-13-10
100/110/115/120V
Relay