BRUEL & KJAER VIBROCONTROL 8000 - 21.4 The Standard (or Default) Modbus Map; View (Export) the Modbus Map

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21.4 The Standard (or Default) Modbus Map
When a user creates a rack configuration a standard (or default) Modbus map is created. The map is
based on the active channels (once configuration is ended), as well as their slot and channel position
in the rack.
If a new module is added, or a new channel is activated, the standard (or default) map is updated
automatically. When the new configuration is Sent, the new configuration will include the updated
standard Modbus map.
The register assignments in the standard map may not be convenient; for example, if the registers are
spread out and it is difficult to use block read commands. In this case, a custom map may be
preferred.
21.4.1 View (Export) the Modbus Map
To export the Modbus map (.csv), select File, Export Modbus
Map. You can then view the map in Excel.
The columns headers in the exported map are as follows:
Column Description
Slave Id
The identification of the Modbus passive device.
Address
The data starting register address.
Bit
The bit number within a word (or 1 for non-packed
statuses).
Group
Rack, Channel, or Measurement
Value
The returned value.
Slot
The rack slot number providing the data.
Channel
The rack channel number providing the data.
Measurement Name
The measurement name (i.e. Direct, Gap, 1X).
Channel Name
The user assigned channel name / tag (i.e. Brg 1X)
Asset 1
The user assigned Asset 1 name.
Asset 2
The user assigned Asset 2 name.
Data Format
The register data format. See Table 58.
Unit
Engineering units (measurements only)
Subunits
Subunits (measurements only)
Minimum
The bottom scale value (measurements only)
Maximum
The top, full scale value (measurements only)
Table 21-1) Modbus spreadsheet column headers
Figure
21-4) Export Modbus Map