Redundant Mns Digital Gateway Modbus Data; Table 31 Default Bit Map Control Commands High Byte; Table 32 Redundant Data For Monitoring By The Modbus Master; Table 33 Redundant Command Possible From The Modbus Master - ABB M101 Manual

DATA M A P PI NG
Bit 15 Bit 14
1 1
GO1 GO1
Reset Set

Table 31 Default Bit Map Control Commands High Byte

9.2.8. Redundant MNS Digital Gateway Modbus Data

The following additional data mapping is provided for a redundant data interface to deter-
mine the status of MNS Digital Gateway (Primary/Backup, Redundancy Error). It is also possi-
ble to send commands to force a change-over.
Modbus
Function
Code
2
2

Table 32 Redundant data for monitoring by the Modbus master

Modbus
Function
Code
6/16

Table 33 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.
1TG C 9 0 8 0 0 4 M 0 2 0 1
Bit 13 Bit 12
1 1
GO0 GO0
Reset Set
Modbus- Modbus Register
Register Name
12001 Primary MNS
Digital Gateway
12002 Redundancy Error
Modbus- Modbus Register
Register Name
44001 Force to changeover
to Backup MNS Digi-
tal Gateway
This command may be sent to either the Primary or Backup MNS Digital Gateway to in-
itiate a changeover.
Bit 11 Bit 10 Bit 09
1 1 1
Bus
Local
Format Description/Remarks
Bit Set to 1 indicates MNS Digital
Gateway is Primary
Bit Set to 1 indicates Redundancy er-
ror.
Format
Unsigned In-
teger 2Byte
DE FAU LT DATA M AP
Bit 08 Register
45001
1 Device
Number
TOL
Bit Function
Bypass
Description/Remarks
Master must send 0x0001 to
force to changeover
57