Parameterization; Digsi; Procedure - Siemens SIPROTEC Manual

Redundant PROFIBUS DP interface
1.3

Parameterization

1.3.1

DIGSI

1.3.1.1

Procedure

Prerequisites
Module selection
Mapping file and
allocation
18
For the parameterization of a 6MD663 or 6MD664 with redundant PROFIBUS DP
have to be used:
• DIGSI 4.71 or higher,
• 6MD663/4 PROFIBUS DP standard mapping 3-3 or 3-4
(with redundancy support, ref. to chap. 3 and 5 for data size)
Figure 1-3 shows the system interface selection when a new device with redundant
PROFIBUS DP RS485 (according to the device MLFB order number) is created in
DIGSI.
Changing the system interface in DIGSI to redundant PROFIBUS DP for already exist-
ing devices is also possible considering the prerequisites discussed in chap. 1.1.
Figure 1-3 Selection of PROFIBUS DP RS485 redundant as system interface
The parameterization of a redundant PROFIBUS DP system interface does not differ
from the steps which must be executed for a non-redundant PROFIBUS DP system
interface. This includes the mapping file selection and the allocation of data objects as
"Source system interface" and "Destination system interface".
Please ref. to the manual "SIPROTEC Communication module, PROFIBUS DP -
Communication profile", chap. "PROFIBUS DP - Parameterization in DIGSI", regard-
ing information about the mapping file selection and the allocation of data objects.
During the device start-up, the SIPROTEC device firmware ensures that in case of a
redundant PROFIBUS DP interface the parameter data (allocations and bus specific
parameters) are loaded onto the two PROFIBUS DP modules. Both PROFIBUS DP
interfaces of the redundant slave always have identical parameters with that.
The communication redundancy itself is transparent for the SIPROTEC device.
All redundancy tasks are carried out by the PROFIBUS DP modules using the PRI-
MARY/BACKUP principle (ref. to chap. 1.2).
Data from the device are transferred to both modules simultaneously.
Commands to the device come only from the module which has the PRIMARY state.
SIPROTEC PROFIBUS DP - Bus mapping 6MD662/3/4
C53000-L1840-B011-03