Control operation can be performed from the local IED HMI. If users are defined in the
IED, then the local/remote switch is under authority control, otherwise the default user
can perform control operations from the local IED HMI without logging in. The default
position of the local/remote switch is on remote.
Accepted originator categories for PSTO
If the requested command is accepted by the authority control, the value will change.
Otherwise the attribute blocked-by-switching-hierarchy is set in the
cause signal. If the
PSTO value is changed during a command, then the command is aborted.
The accepted originator categories for each PSTO value are shown in
Table 33.
Table 33: Accepted originator categories for each PSTO
Permitted Source To Operate Originator (orCat)
0 = Off 4,5,6
1 = Local 1,4,5,6
2 = Remote 2,3,4,5,6
3 = Faulty 4,5,6
4 = Not in use 4,5,6
5 = All 1,2,3,4,5,6
6 = Station 2,4,5,6
7 = Remote 3,4,5,6
PSTO = All, then it is no priority between operator places. All operator places are
allowed to operate.
According to IEC 61850 standard the orCat attribute in originator category are defined
in Table 34
Table 34: orCat attribute according to IE C61850
Value Description
0 not-supported
1 bay-control
2 station-control
3 remote-control
4 automatic-bay
5 automatic-station
6 automatic-remote
7 maintenance
8 process
1MRK 511 401-UUS A Section 14
Control
Bay control REC670 2.2 ANSI 355
Application manual
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