Appendix C: Communications via PROFIBUS
C.10 Diagnostics
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
277
Acyclic Extended Diagnostics /General Fault Codes
LCD display
Meaning
Corrective Action
Byte
Bit
S:12
* Internal temperature of the device has
exceeded
specifications: it is operating outside its
temperature range.
•
Relocate device and/or lower process
temperature enough to cool device.
•
Inspect for heat-related damage and
contact your local Siemens
representative if repair is
required.
•
Fault code will persist until a manual
reset is performed using PDM or the
LCD interface.
1
5
S:14
Upper and lower input values (Process
Value Scale) for AIFB1 are the same.
•
Check configuration for AIFB1.
•
Ensure that Upper Value and Lower
Value (Process Value Scale) are not
the same.
6
S:15
Upper and lower input values
(Process Value Scale) for AIFB2
are the same.
•
Check configuration for AIFB2.
•
Ensure that Upper Value and Lower
Value (Process Value Scale) are not
the same.
7
S:17
Calibration interval as defined in
Maintenance Required Limit has expired.
Perform calibration.
2
1
S:18
Calibration interval as defined in
Maintenance Demanded Limit has
expired.
Perform calibration.
2
S:28
Internal device failure caused by a RAM
memory error.
Repair required: contact your local
Siemens representative.
3
4
S:29
EEPROM damaged.
Repair required: contact your local
Siemens representative.
5
S:31
Flash error.
Repair required: contact your local
Siemens representative.
7