ABB M101, Руководство пользователя, Страница: 65 / 74

DATA MAPPING DE FAU LT DATA M AP
1TG C908004M0 201 57
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 Modbus-
Register Modbus Register
Name Format Description/Remarks
2 12001 Primary MNS
Digital Gateway Bit Set to 1 indicates MNS Digital
Gateway is Primary
2 12002 Redundancy Error Bit Set to 1 indicates Redundancy er-
ror.
Table 32 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 MNS Digi-
tal Gateway Unsigned In-
teger 2Byte Master must send 0x0001 to
force to changeover
This command may be sent to either the Primary or Backup MNS Digital Gateway to in-
itiate a changeover.
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.
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