Pyromation Series 642 - Manual (Page 27)

Series 642 Commissioning
Pyromation, Inc. 27
• 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:
Fault classification see Section 9.2 Error messages.
Byte Contents Meaning
1
Overall device status
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
2 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
3 0 x 01 information: device starting
0 x 02 error: supply voltage too low
4 0 x 40 global bit for a warning
0 x 80 global bit for an error
5
Status channel 1
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
7
Extended device status
0 x 01 maintenance necessary
0 x 02 warnings / error present
8 Device operating mode Always 0
Byte Contents Meaning
1 Information acc. to GMA VDE
NAMUR 2650 0x01 -F- Fault
0x02 -C- Device in service mode
0x03 -M- Maintenance required
0x04 -S- Out of specification
2+3 Device error messages, see
section 9.2