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Interpretation of information
There are three series of Registers for the sense cables state (addresses are expressed in decimals)
The first series (7000) is used for the types of alarm.
- Leak (bit 4)
- Cable break in bus (bit 0)
- Cable break in sense cable (bit 1)
- Cable break in end termination plug (bit 2)
- All cable breaks (resumed bus, plug and sense cable) (bit 7)
The second series (8000) is used for the alarm status.
- New (bit 0)
- Selected (bit 1)
- Cleared (bit 2)
- Ejected (bit 3)
The third series (9000) is used for location (in meters) of alarms (bits 0 to 15)
The Register’s address to refer to a particular cable with the following layout:
- First digit for the series (7, 8, or 9)
- Second digit for the sense circuit (1, 2, or 3)
- Last two digits for the position of the cable in the circuit (from 01 to 40)
Example: The Type Register for the seventh cable of the second circuit (cable 2_07) will therefore be
Register 7207, and the Location Register for the same cable will be 9207.
Finally, four additional Registers provide information on the status of the system.
1. 4096. Digital Unit leak (bit 4) and cable break (bit 7) global status.
2. 4097. Circuit 1 leak (bit 4) and cable break (bit 7) global status.
3. 4098. Circuit 2 leak (bit 4) and cable break (bit 7) global status.
4. 4099. Circuit 3 leak (bit 4) and cable break (bit 7) global status.
Based on client needs and requirements, the user can query the set of Registers, in part, and/or use
the additional Registers. This allows for simplified programming and adaptation to the specific
BMS/BMC.
Remarks:
The end terminating plug can only encode cable breaks. For a circuit of N cables, it must be read N+ 1
Register (N Registers for the sense cables + 1 Register for the end terminator plug).
An ejected cable can no longer be set with an alarm, so it is normal to not to have any more
information in the Type Register (7000).
Only the Status Register (8000) shows that this cable is ejected.
Contrary to what existed in the former Modbus Table, the location expressed in metres is now identical
to the value indicated on the unit’s screen. It is therefore quite possible to have an alarm located at
472m in the case of associated cables.
Following the supervisor, the charset can be included or not in the interpretation of the response. In
this case, the address of the cables will be N+1 (Example: cable 2_07 in address 7208 instead of
7207).
Tips:
An Excel table (ready to complete), and incorporating all this information, is available on TTK website.
The 'auto control’ file contains a PDF file listing all sense cables connected to the system, as well as
their names, lengths, states, and other useful information.
The embedded installation maps (optional) can be saved in the ‘maps’ folder.
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