JUMO mTRON T Manual page 43

3.9.2 Error messages for invalid values
For measured values in the float format, the error number appears directly in the value, i.e. it
contains the error number instead of the measured value.
Error code with
float values
37
1.0 × 10
37
2.0 × 10
37
3.0 × 10
37
4.0 × 10
37
5.0 × 10
37
6.0 × 10
37
7.0 × 10
37
8.0 × 10
Example
Reading in the analog input 1 of a 4-channel analog input module at Modbus address 8:
Data request:
08
Slave
Response:
08
Slave
The measured value 0x7DB48E52 (=3.0 × 10
input value is invalid.
Errors
Underrange
Overrange
No valid input value
Division by zero
Math error
Invalid terminal temperature of thermocouple
Invalid float value
Integrator or statistics destroyed
03 00 52
Function Word address
03 04
Function Bytes read
3 Modbus protocol description
00 02
Number of
words
8E 52
Error code
37
) supplied by analog input 1 indicates that the
43 65
CRC
7D B4 ED C8
CRC
43