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The TPOS01 function can issue a “Success to cancel” signal at the monitoring, point
“TPOS01_CC_SS”, when the TPOS01 function has determined that the “Remote-cancel” signal
is true. Another “Operate failed” signal is issued at monitoring point “TPOS01_CC_FS” if the
TPOS01 function is able to determine that the “Remote-cancel” signal is not true.
(ii) Receiving “Cancel” from the local-end
Figure 4.9-23 outlines the reception of the ‘cancel’ command from the local-end.
Cancel from the local-end
P2 control from remote-end
P3 control from remote-end
P1 control from front panel
P2 control from front panel
P1 control by PLC function
P3 control from front panel
P2 control by PLC function
P1 control from remote-end
P3 control by PLC function
Cancel from the remote-end
Figure 4.9-23 Outline of ‘cancel’ command from the local-end
Input signal
Figure 4.9-24 depicts the cancel logic when a “Cancel command (Local-cancel)” signal is applied
to the TPOS01 function. The signal is generated when the “Cancel” key is pressed on the IED
front panel; the user is not required to take account of mapping. When the logic receives the
“Local-cancel” signal, the logic is able to output a result signal, provided that the “cancel
condition” checking is satisfied.
TPOS01 function (Function ID: 513001)
“TPOS01_ CC_SS”
(513001_8604011E95)
“TPOS01_CC_FS”
(513001_8704011E96)
Figure 4.9-24 ‘Cancel’ from the front panel
Output signal to BO
The TPOS01 function, illustrated in Figure 4.9-24, is able to issue a “Selection to cancel” signal