Endress+Hauser iTEMP HART TMT142 Manuel De Mise En Service page 71

TMT142
!
Endress+Hauser
No. Description
Device/E+H specific
144 Read matrix parameter
145 Write matrix parameter
231 Check Device Status
®
• HART command No. 48 (HART-Cmd #48)
Apart from the response code and the device status byte, the field transmitter calls up a detailed
diagnosis by means of Cmd #48. This diagnosis is 8 bytes long.
Byte Contents
1
2
Overall device status
3
4
5
Status channel 1
7
Extended device status
8 Device operating mode
Note!
The Fieldgate FXA520 system component from Endress+Hauser enables remote interrogation,
remote diagnosis and remote configuration of connected HART
automatically by e-mail or SMS. For diagnosis purposes, the device evaluates the first 4 bytes of
HART-Cmd #48.
®
• HART command No. 231 (HART-Cmd #231)
The classified diagnosis of the device can be checked by means of this command. Fault classes
according to GMA VDE NAMUR 2650 guidelines:
Byte Contents
1 Information acc. to GMA VDE
NAMUR 2650
Access
r
w
r
Meaning
0 x 01 error: EEPROM
0 x 02 error: ADC
0 x 04 error: channel 1
0 x 10 error: comparison
measurement point
0 x 20 error: HART ASIC
0 x 40 warning: measured value range undershoot
0 x 80 warning: measured value range overshoot
0 x 01 warning: backup switched on
0 x 02 information: maintenance necessary
0 x 04 information: drift too small/large
0 x 08 information: corrosion at terminals
0 x 10 information: ambient temperature too high/low
0 x 20 information: output current at fixed value
0 x 40 information: no LCD connected or LCD error
0 x 80 information: upload/download active
0 x 01 information: device starting
0 x 02 error: supply voltage too low
0 x 40 global bit for a warning
0 x 80 global bit for an error
0 x 01 warning corrosion
0 x 02 corrosion
0 x 04 sensor rupture
0 x 08 sensor short circuit
0 x 10 range undershoot
0 x 20 range overshoot
0 x 40 channel not operational
0 x 80 error A/D conversion
0 x 01 maintenance necessary
0 x 02 warnings / error present
Always 0
®
devices, e.g. message sent
Meaning
0x01 -F- Fault
0x02 -C- Device in service mode
0x03 -M- Maintenance required
0x04 -S- Out of specification
Commissioning
71