The output CMDPOS21 is set when the function receives an OPEN command
from the local HMI when the SLD is displayed and the object is chosen.
It is important for indication in the SLD that the a symbol is associated
with a controllable object, otherwise the symbol won't be displayed on
the screen. A symbol is created and configured in GDE tool in PCM600.
The PSTO input is connected to the Local remote switch to have a selection of
operators place, operation from local HMI (Local) or through IEC 61850 (Remote). An
INTONE connection from Fixed signal function block (FXDSIGN) will allow
operation from local HMI.
As it can be seen, both indications and commands are done in double-bit
representation, where a combination of signals on both inputs/outputs generate the
desired result.
The following table shows the relationship between IPOS1/IPOS2 inputs and the name
of the string that is shown on the SLD. The value of the strings are set in PST.
IPOS1 IPOS2 Name of displayed string Default string value
0 0 PosUndefined P00
1 0 Position1 P01
0 1 Position2 P10
1 1 PosBadState P11
12.6.3 Function block
IEC06000508-2-en.vsd
VSGGIO
BLOCK
PSTO
IPOS1
IPOS2
BLOCKED
POSITION
POS1
POS2
CMDPOS12
CMDPOS21
IEC06000508 V3 EN
Figure 381: VSGGIO function block
1MRK505222-UUS C Section 12
Control
761
Technical reference manual
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