Rosemount 2240S, Reference Manual

Page: 78 / 100

Reference Manual
300550EN, Rev AA
December 2010
Rosemount 2240S
6-20
Section 6. Service and Troubleshooting
6.3.5 Temperature
Element Status
Table 6-8 shows measurement status messages for temperature elements
connected to a 2240S Multi-input Temperature Transmitter.
You can view status registers by using the View Diagnostic Registers function
or the View Input Registers function in TankMaster WinSetup, see
“Diagnostics” on page 6-4 and “Viewing Input and Holding Registers” on
page 6-2.
Table 6-8. Status registers for
temperature elements
connected to a 2240S
Message Description
Temp_1 Input register no. 200
(1)
.
Temperature measured by element no. 1
(1) The register number refers to the internal Input Register in the 2240S database.
Status_1 Input register no. 202
Status for temperature element 1:
Bit 0: Not Connected or disabled by SW (This causes the
Temperature value to be -300 °C).
Bit 1: Temperature is under the Lower Temperature Limit
Bit 2: Temperature is above the Upper Temperature Limit.
Bit 3: Measured resistance is outside the linearization
table (This causes the Temperature value to be -300 °C).
Bit 4: Sensor short circuit
Bit 5: Sensor short circuit to ground
Bit 6: Sensor open circuit
Bit 7: ADC communication error
Bit 8: ADC HW error
Bit 9: MI Approved Value
Bit 10: Invalid Linearization Table (This bit causes the
Temp. value to be -300).
Bit 11: Invalid conversion formula. Check the constants in
the User defined formula.
Bit 12: Power up.
Bit 13: Simulated Value
Bit 14: ADC data is not valid.
Bit 15: Invalid Data.
-- --
Temp_16 Input register no. 260.
Temperature measured by element no. 16.
See above.
Status_16 Input register no. 262.
Status for temperature element 16.
See above.