Toshiba GR200 Series Instruction Manual page 210

Control hierarchy
It is important that the user understand the meaning of the terms 'control-right' and 'control-
hierarchy' in connection with the functioning of general control functions in the sub-station
automation system (SAS) and the sub-station control and monitoring system (SCMS). Figure
3.3-1 depicts the control-hierarchy; the control-hierarchy is made of three control-levels, two
selector-switches, and three control-points. Either control command of three control-points is
permitted so that the other commands will be forbidden in the system. On this account, no
collision of control-points exists within the system.
Network level
Selector switch
(43R)
Station level
Selector switch (43BCU‡ )
L
R
Bay level
Control levels Selector switches
Figure 3.3-1 Control hierarchy and selector switches
‡Note: The
can be programmed during manufacture using the PLC function before shipment,
but it can also be programmed by the user.
§Note: The user can implement a hierarchy by programming the PLC. For more
details, see Chapter
Control-point in RCC
Communication
RCC
Remote (R)
Operation
KEY
Control-right
Control points and positions of selector switches
L|R key on the IED is used for the 43BCU switch. The
PLC function
- 196 -
Control-point in OWS/EWS
EWS
EWS/OWS
Control-point on HMI
Local (L)
.
6F2S1931 (0.20)
OWS
L|R key
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)