Figure 7.4 - Example 4 Stream Mova: Stage Confirm Bits - Siemens UTMC OTU Handbook

Figure 7.4 – Example 4 Stream MOVA: Stage Confirm Bits
Bit 1 Bit 2
1
G1 G2
2
G1 G2
3
G1 G2
4
G1 G2
7.6.1.3 Force Bits and MOVA TO bits
The stage force bits can be mapped as required on the OSE Config screens, within the
limits of the 32 control bits sent from the outstation. The mapping of the stage force bits
must match the configuration of the controller. It is recommended to start the stage
force bits for each stream on a byte boundary, so that the limit of each stream is easier
to see, but this may not always be possible on a large controller.
It is recommended that a MOVA take-over bit is allocated for each stream from within
the total 32 control bits available. Following the controller convention for numbering
streams from 0, these would be called MOVATO0, MOVATO1 in IC4. The take-over bit
for a stream should be configured in the outstation and driven by the MOVATO function
for that stream. The bit will be activated by the outstation when MOVA is in control. The
bit can be used in special conditioning in the controller to differentiate between MOVA
and UTC control e.g. to light a LED on the manual panel when MOVA is active or to
provide demands for demand dependent forces (see 7.7.1).
The outstation automatically controls the TO bit in the message header so that the IC4
special conditioning items 'MOVATO' and 'SUTCTO' in the controller will be true when
any stream TO bit is active.
In the latest version of IC4, additional conditioning bits are set as shown below. The bits
are controlled by the serial link software and no bit mapping is required in the outstation
to achieve this functionality.
'SUTCTOMOVA' - MOVA is active on one or more streams
'SUTCTOUTC' - UTC is active on all streams
Conditioning in the controller will need to implement any UTC force bit timeouts
required, for those streams which remain under UTC control while others are running
MOVA.
667/HB/31601/000
Bit 3 Bit 4 Bit 5 Bit 6
G3 G4 G5
G3 G4 G5
G3 G4 G5
G3 G4 G5
MOVACRB
Bit 7 Bit 8
MOVA 1 (8 Confirms)
G6 G7 G8
CRB
G6 G7
MOVA 3 (7 Confirms)
CRB
G6 G7
G6 G7
CRB
Page 101
UTMC OTU/MOVA Handbook
MOVA 1
Controller Ready
MOVA 2 (7 Confirms)
MOVA 4 (7 Confirms)
Issue 5