DEFAULT DATA MAP
DATA MAPPING
62
1TGC908004
Table 32 Default Bit Map Control Commands High Byte
Redundant Digital Gateway Modbus Data
The following additional data mapping is provided for a redundant data interface to deter-
mine the status of Digital Gateway (Primary/Backup, Redundancy Error). It is also possible to
send commands to force a change-over.
Modbus
Function
Code
Modbus-
Register
Modbus Register
Name
Format
Description/Remarks
2
12001
Primary MNS
Digital Gateway
Bit
Set to 1 indicates Digital Gateway
is Primary
2
12002
Redundancy Error
Bit
Set to 1 indicates Redundancy er-
ror.
Table 33 Redundant data for monitoring by the Modbus master
Modbus
Function
Code
Modbus-
Register
Modbus Register
Name
Format
Description/Remarks
6/16
44001
Force to changeover
to Backup Digital
Gateway
Unsigned In-
teger 2Byte
Master must send 0x0001 to
force to changeover
This command may be sent to either the Primary or Backup Digital Gateway to initiate
a changeover.
Table 34 Redundant Command possible from the Modbus 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.
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 09
Bit 08
Register
45001
1
1
1
1
1
1
1
1
Device
Number
GO1
Reset
GO1
Set
GO0
Reset
GO0
Set
Bus
Local
TOL
Bypass
Bit Function
Summary of Contents for LVS Digital
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