Siemens Pointek CLS 200 Instruction Manual page 71

Self test
Algorithm
function
Summarizing the bytes and
Code test
comparison with a checksum
If measurement returns a
value outside the sensor
Sensor test
range determined by
Measuring Limits
Check If a service timer reaches the
service parameterized warning or
timers alarm limit
The program must pass
specific checkpoints. If all
Watchdog checkpoints are not passed
trigger within a specific time, the
watchdog timer expires and
a restart will be carried out
a.
A walking one and zero is a method of checking each bit in each location of
volatile memory.
7ML19985AR02 Pointek CLS 200 (PROFIBUS PA) – INSTRUCTION MANUAL
Self Tests
Diagnostic
Frequency error
message
45 s Memory error
every
Measurement
measurement
failure
cycle/ 60 ms
Maintenance
60 ms
required
2 s Restart
Corrective
Measure
Replace the
electronics and,
if necessary, the
measuring cell.
Have the sensor
checked by the
service
department.
Carry out the
servicing and
reset the
messages using
SIMATIC PDM.
Check the
cabling and the
power unit to
ensure the
power supply to
Pointek CLS 200
Page IIC–71