Acyclic Extended Diagnostics (General Fault Codes) - Siemens Sitrans LR250 Operating Instructions Manual

Acyclic Extended Diagnostics (General Fault Codes)

In addition to the extended diagnostics available by cyclic data exchange (shown above),
further extended diagnostics are available via acyclic communications. This consists of
Diagnosis reply (available cyclically)
six bytes. See
location of the Extended Diagnostics
Note:
Certain fault codes (identified by an asterisk [*] in the table below) will persist
until a manual reset has been performed (see Fault Reset (3.3.)
Acyclic Extended Diagnostics /General Fault Codes
LCD
Meaning
display
The device was unable to get a
measurement within the Fail-
safe LOE Timer period. Possible
causes: faulty installation,
S:0
antenna material buildup,
foaming/other adverse process
conditions, invalid calibration
range.
Unable to collect profile
because of a power condition
S:2
that is outside the operating
range of the device.
Device is nearing its lifetime
limit according to the value set
S:3
in Maintenance Required Limit.
Device is nearing its lifetime
limit according to the value set
S:4
in Maintenance Demanded
Limit.
Sensor is nearing its lifetime
limit according to the value set
S:6
in Maintenance Required Limit.
7ML19985JF04 SITRANS LR250 (PROFIBUS PA) – OPERATING INSTRUCTIONS
on page 152 for information on the
Corrective Action
• Ensure installation details are
correct.
• Ensure no antenna material
buildup. Clean if necessary.
• Adjust process conditions to
minimize foam or other
adverse conditions.
• Correct range calibration.
• If fault persists, contact your
local Siemens representative.
Repair required. Contact your
local Siemens representative.
Replacement is recommended.
Replacement is recommended.
Replacement is recommended.
on page 88
).
Byte Bit
0
2
0
3
4
6
Page 155