Redundant Digital Gateway Profibus Data; Table 17 Redundant Data For Monitoring By The Profibus Master; Table 18 Redundant Command Possible From The Profibus Master - ABB LVS Digital Manual

D EFAULT DATA MAP

8.2.6 Redundant Digital Gateway Profibus Data

The following additional data mapping is provided for a redundant data interface to
determine the status of Digital Gateway (Primary/Backup, Redundancy Error). It is also pos-
sible to send commands to force a change-over.
Byte Bit 7
243
Bit 0 is set to indicate which Digital Gateway is currently set to Primary.
Bit 1 is set when there is a redundancy error, for example when 1 Digital Gateway is

Table 17 Redundant data for monitoring by the Profibus master

Byte Bit 7
123
Bit 0 when this bit is sent to either the Primary or Backup Digital Gateway it initiates a
change-over.

Table 18 Redundant Command possible from the Profibus Master

In case of a project specific mapping is used it is mandatory that above
redundancy information is configured in the mapping of the respective
fieldbus.
4 2
Bit 6 Bit 5 Bit 4
Bit 6 Bit 5 Bit 4
Bit 3 Bit 2 Bit 1
Redundancy
Error
Bit 3 Bit 2 Bit 1
DATA MAPP ING
Bit 0
Primary
offline
Bit 0
Redundancy
Change Over
1 TG C90 80 04