Siemens SIPROTEC 7SA522 Manual page 68

PROFIBUS-DP - Parameterization in DIGSI
Change of an
existing allocation
68
Attention!
• The information type of double commands for routing as "Source system interface"
depends on the information type of the associated checkback indication.
Only double commands with a double-point indication as checkback indication can
be routed to the positions in the PROFIBUS-DP message which are reserved for
double commands according to the bus mapping.
Double commands with a single-point indication as checkback indication or without
checkback indication are treated via PROFIBUS-DP like single commands and
must be routed to the positions reserved for single commands.
• Commands without checkback indication can not be routed to "Destination system
interface". Reading the state of these command types is not possible via PROFI-
BUS-DP.
If an information already routed on system interface shall get another (empty) position
in the PROFIBUS-DP message, then the Object properties dialog window (ref.
to Figure 4-6) has to be selected (Properties ... in the pop-up menu when press-
ing the right mouse button in one of the columns "Display text", "Long text" or "Type"
of the DIGSI Configuration matrix in the row which is associated to the infor-
mation).
Depending on the information type the following parameters are to select in the prop-
erty sheet Protocol info source or Protocol info destination of the
Object properties dialog window:
Parameter
Byte offset The offset indicates the byte in the
PROFIBUS-DP message in which the
bit value is placed.
The offset indicates the byte position in
the PROFIBUS-DP message.
The offset indicates the beginning of the
most significant byte in the message.
Bit mask In the bit mask value all bit positions are
set to 1 which are associated to the in-
formation.
Representation of the bit mask as
• decimal number in DIGSI 4.21,
• hexadecimal number from DIGSI 4.3.
Comments
SIPROTEC PROFIBUS-DP - Communication profile
Info types for Info types for
Protocol info Protocol info
source destination
IntSP, IntDP, SP, DP, Out,
SC/DC, SF/DF IntSP, IntDP
- TxTap
- MV, MVMV,
PMV
IntSP, IntDP, SP, DP, Out,
SC/DC, SF/DF IntSP, IntDP
C53000-L1840-B001-03