Siemens Sitrans Probe LU Instruction Manual page 33

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Hex Status –
value UNCERTAIN
UNCERTAIN – simu-
0x73
lated value, start
0x74 UNCERTAIN – simu-
...0x77 lated value, end
a.
Wear
See
Hex
Status BAD
value
0x00 BAD – non specific
BAD – passivated (diagnostics
0x23
alerts disabled)
0x24 BAD – maintenance alarm, more
...0x27 diagnosis available
BAD – process related, no mainte-
0x25
nance
0x3C BAD – function check / local over-
...0x3F ride, value not usable
7ML19985JB02
Description (cont' d )
Indicates the start of a simulation.
Simulation of a measured value or Input FB mode
changes from AUTO to MAN.
• This status remains active for at least 10 seconds:
• In MAN mode the status remains until a subsequent
• In simulation mode the written status is buffered and
Indicates the end of a simulation.
Simulation of a measured value is disabled or Input FB
mode changes from MAN to AUTO.
This Status remains active for 10 seconds after simula-
tion ends.
While this status is active there is no reliable process
value. Measured values and their status are updated
afterwards.
on page 117 for more detail.
SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL
– after enabling simulation
– after setting the FB to MAN mode
– after a restart (e.g. power down cycle) if the simu-
lation is enabled or the FB is in MAN mode
– after passivation is cleared if simulation is
enabled or the FB is in MAN mode
write command overwrites the OUT value after the
10 seconds have expired.
appears in the value flow after 10 seconds. However
the new written SIMULATE parameter with its status
can be read before the 10 seconds have expired.
Description
Proxy determines that a device does not
communicate.
Configured failsafe value is used,
accompanied by this status.
No measurement available because of a
failure.
No measurement available because of
invalid process conditions.
Occurs during cleaning or calibration
process.
Doc Id: VM11
Active Date: 15/12/2006
Page 27