Appendix C.Modbus Addressable System
C.1Modbus Communications Parameters
|
Port Setting |
Required Value |
|
Bits per Second |
115,200 |
|
Data bits |
8 |
|
Parity |
None |
|
Stop bits |
1 |
|
Flow Control |
None |
table 8: Modbus Communications Parameters
|
Number |
Name |
Cause |
Remedy |
|
2 |
Temperature Sensor Range |
Measured temperature out of range. Thermistor may be too hot or too cold, or it may be damaged. |
Use adjacent sensors to validate or estimate temperature. |
|
4 |
Temperature Sensor Verify |
Secondary temperature sensor differed too much from high accuracy primary sensor. |
Use adjacent sensors to validate or estimate temperature. |
|
8 |
System Reset |
Unexpected interruption in prior measurement cycle. |
Ensure supply voltage is sufficient. |
Note: The sensor stores and transmits errors in binary code to compact the information. Though unlikely, two errors could occur in one measurement cycle. The resulting code will be the sum of the error numbers, e.g., error 4 plus error 8 appears as number 12.