Toshiba GR200 Series Instruction Manual page 540

Source
IED1
IN SE R VICE
E R R OR
CPU
Data
Port B Port A
Tx Tx
Rx
Rx
F2
F1
A-Frame
Ring LAN1
B-Frame B-Frame
IN SE R VICE
E R R OR
Tx Rx Tx Rx
Port A Port B
LAN module LAN module
(C11) (C12)
Data
I
CPU
O
IED2
F1 F2 F3
Figure 10.2-6 HSR example for ring-LAN with DANH
Note: Prohibition symbol () shows the frame is removed by the next terminals.
LRE switches
(ii)
The user should set On for both settings [LRE_PortA_EN] and [LRE_PortB_EN] so that the
LRE can duplicate the data for A-Frame and B-Frame.
Entry Forget Time
(iii)
Packets are transferred in A-Frame and B-Frame over the LAN. The user should set the
[EntryForgetTime] to delete a duplicated frame listed in the duplicating table. The duplicated
frame will be erased when it stays longer than the setting time.
For Figure 10.2-5 example, the IED1 (Source) duplicates data by the LRE. The duplicated
data (in A and B-Frames) are transferred simultaneously over the LAN_A and LAN_B. In the
meantime, both frames cannot arrive at Substation computer (Destination). If the duplicated
frame is older than the setting [EntryForgetTime], the duplicated frame will be removed.
The [EntryForgetTime] has default 400ms setting, but the user can change it for an
appropriate value among 100 to 10,000ms. The setting value should be taken account of the
Destination
TOSHIBA
Substation Computer
I
Port B
R
Rx
L
O
Help ENTER
Cancel
F3 F4 F5 F6 F7
B-Frame
A-Frame
A-Frame
TOSHIBA
QuadBox QuadBox
R
Ring LAN2
L
Help
Cancel ENTER
F4 F5 F6 F7
B-Frame
Tx Rx Tx Rx
Port A Port B
LAN module LAN module
(C11) (C12)
Data
CPU
IED3
- 526 -
Operator Workstation
CPU
Data
Port A
Tx Tx
Rx
B-Frame
A-Frame
A-Frame
B-Frame
Rx
Tx Tx
Port A Port B
LAN module LAN module
(C11)
Data
CPU
IED4
A-Frame
TOSHIBA
IN SE R VICE
E R R OR
I
R
L
O
Help Cancel ENTER
F1 F2 F3 F4 F5 F6 F7
6F2S1931 (0.20)
CPU
Data
Port B Port A
Tx Tx
Rx
Rx
TOSHIBA
IN SE R VICE
E R R OR
Rx
(C12)
I
R
L
O
Help Cancel ENTER
F1 F2 F3 F4 F5 F6 F7
Centralized GRB200
(Soft: 030, 031, 032, 033, 034)