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Select logic for SBO/DIR modes
4.2.1
The user should set scheme switch [DPOS01-CTREN] to On prior to DPOS01 operation. Table
4.2-9 shows all of the scheme switches in the DPOS function.
Receiving "Select command On" from the remote-end
(i)
Figure 4.2-1 outlines the reception of the select command 'On' from the remote-end.
Wait for a command
Select stage
Select command On from the remote-end
Signal reception
IEC61850
Select command Off from the remote-end
Select command On from the local-end
Select command Off from the local-end
Select command On by the PLC function
Select command Off by the PLC function
Input point required mapping
Figure 4.2-2 shows the Select logic when a "Select command On (Remote-ON-Control)" signal
is applied to the DPOS01 function. The logic has the input-point "DEV01_CONTROL_REQ"
for the reception of the select command. That is, the input-point must be mapped for IEC61850
communication. The function will fail to operate if mapping is not performed correctly. We will
discuss how to map the input-points for IEC61850 communication in Chapter 4.2.7.
Output signal to BO
The DPOS01 function can issue a "Select success" signal at the output point
"DPOS01_OSL_BO_FLG", when the DPOS01 function determines that the "Remote-ON-
Control" signal is true. If the DPOS01 function determines that the "Remote-ON-Control"
signal is not true, the DPOS01 function returns to the "Wait for a command" stage.
Select
Selection logic
decision
Figure 4.2-1 Outline of Select command 'On'
- 488 -
Failed
Signal output
Success
6F2T0207 (0.01)
Wait for a next command
Cancel logic
Cancel command
Cancel logic
Operate logic
Operate command
Operate logic
GRE200 (5,6)
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