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(vi) Receiving “Select command Open” by PLC function
Figure 4.2-11 outlines the reception of the select command ‘Open’ by the PLC function.
PLC logic programmed
by the user
Select command Open by the PLC function
Select command Open from the remote-end
Select command Closing from the remote-end
Select command Open from the local-end
Select command Closing from the local-end
Select command Closing by the PLC function
Figure 4.2-11 Outline of select command ‘Open’
Input signal from the PLC function
Figure 4.2-12 shows the select logic when a “Select command Open (PLC-Open-Control)” signal
is generated by the PLC function There are two input-points for the reception of this signal,
unlike in the signal “Select command Closing (PLC-Closing-Control)” where four are available.
That is, if interlock checking is required, use the connection point (PLC#1:e.g.,
DEV01_OP_INTERLOCK). Alternatively, if the interlock check is not required, use the
connection point (PLC#2:e.g., DEV01_OP_COMMAND). PLC#1 and the PLC#2 are shown in
Table 4.2-4.
DPSY01 function (Function ID: 511001)
“DPSY01_FSL_BO_CSF”
(511001_8A02011DC4)
Operation command
without ILK condition
ILK† condition (“Open”) passed
Signals from user PLC logic
Open-control command requiring ILK checking
(PLC#1 connection point)
Open-control command requiring no ILK checking
(PLC#2 connection point)
Operation command
with ILK condition
Figure 4.2-12 Select Open by PLC function in DPSY01
††
††
Note: To identify the input and output points of the DPSY02 logic, see Table 4.2-4 for
the inputs (PLC#1 and PLC#2) and Table 4.2-11 for the outputs.
Output signal to BO