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The order in which the Bytes are presented can be changed from MSB (as above) to LSB using the Modbus Data
Format setting in the T24 toolkit, see
The status register contains the status byte, LQI and Time Out indicator in the format shown below:
15 14 13 12 11 10
LQI
Link Quality Indicator
0-100 % Signal Strength
Time Out Bit
Set to 1 on Time out
ASCII Communication
The T24-GW1 ASCII mode provides a very simple interface for gathering data from T24 modules. When a packet
is received from any transmitter module on the same RF channel an ASCII string is sent from the gateway in the
format:
DataTag=Value,LQI,B,E <CR>
DataTag – The four digit data tag of the module that the reading has come from
Value - an ASCII representation of the module reading
LQI – Link quality indicator between 0 – 100
B – Set to 1 if low battery error
E – Set to 1 if integrity error
Example: FE56=123.156,100,0,0 <CR>
Mantracourt Electronics Limited
Toolkit – General
Settings.
9
8
7
6
5
4
STATUS BYTE
0 – Shunt Cal
1 – Integrity Error on Input
2 – Reserved
3 – Reserved
4 – Power up *
5 – Battery low
6 – Digital Input Active
7 – Digital Output Active
* - This flag is set if the module has had power
interrupted i.e. is running due to battery change
not woken from sleeping
3
2
1
0
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T24 Telemetry User Manual
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