Description Of Visualization With Software Block - Siemens 3VF Series Communications Manual

Communication System Manual

3.5.3.8 Description of visualization with software block

We shall demonstrate the use of the software block with reference to an example. Actual phase
currents L1, L2 and L3 are to be displayed in a visualization window (e.g. WinCC). The actual state of
the circuit-breaker should also be displayed. It should also be possible to display and set new
parameters for the "a" release in this window (T-Nr. 61).
3WN6 visualization
315 Phase current L1
319 Phase current L2
325 Phase current L3
Circuit-breaker ON
Circuit-breaker OFF
Load shedding
Ready to close
Storage spring charged
These 3 requests must be entered in the list of cyclic messages for the actual phase current to be
displayed in the boxes. This is achieved by setting the bits in DW100 of DBAT (only enable messages
11 - 13), see 3.5.3.4.2. The actual currents can then be copied into the window from data words DW23,
25 and 27 of DBG1. The circuit-breaker states are transferred with every message in the cyclic part and
can be obtained from data words DW96 and 97 of DBAT (DW96 corresponds to octets 9 and 10, DW97
to octets 11 and 12).
The ON and OFF buttons can be used to set 3WN6 to the required state. Bit 1 (for OFF) or bit 0 (for
ON) of octet 10 must be set for this purpose. The bit is automatically reset. If octet 10 cannot be
reached directly for visualization, these bits can also be set in DW98 of DBAT. They are written out at
the end of the cycle.
A value is to be parameterized in accordance with message 1:61. If the actual parameterized value is
to appear in the box, the corresponding bit must be set in DW103 of DBAT (as was the case with the
current values). This value is then updated cyclically. The value in the box must be copied from
DW123 of DBG1. To parameterize a new value, enter the value in the box and press the SET button.
The visualization software then copies this value to the correct location of DBSZ, i.e. to DW123 (= T-
Nr. *2 +1). The block then detects this new value and parameterizes it in the circuit-breaker. When the
procedure is complete, the actual parameterized value is again displayed in the box until such time as
3WN6 has verified and returned the new value.
Note: Win3WN6 and SICAM LCC are available (see page 35) for standard visualization of 3WN6
circuit-breaker information.
78
Switch circuit-breaker ON
Switch circuit-breaker OFF
© Copyright Siemens AG 1998. All rights reserved.
3WN6 Circuit-Breakers
"a" release 980
SET
ON
OFF
Version 1.0 (02/98)