Toshiba GR200 Series Instruction Manual page 610

Requirements in the Master station
10.4.2
In the master station of the IEC 60870-5-103 standard, the following specifications should be
followed in the respective IEDs:
1) Polling cycle: 150ms or longer
2) Timeout time (time to re-sending the request frame to the IED): 100ms
Figure 10.4-1 Ping cycles between the master station and the IED
IEC103 master
Data request
Polling cycle:
Response frame
150ms or more
Data request
Response frame
- 596 -
6F2S1931 (0.20)
IED
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)