Siemens 7ME30 Instruction Manual page 31

Output
value
Upper
alarm limit
Upper value
Upper
warning limit
Lower value
Current
output value
Lower
warning limit
Lower
alarm limit
Lower
sensor
limit
Figure 5--1 Assignment between measured value and output value (example)
Limit values (menu 3.1.9, 3.2.4, 3.3.4, 3.4.4)
Limit values and hysteresis are related to the output scale; the hysteresis is an absolute value and is
independent of scaling changes.
Values exceeding or undershooting limits will be indicated in the measured value status ("Limits",
chapter 4.1.1.1, page 12). "active advisory alarm" warning limits and "alarm critical alarm" alarm limits are
signaled in the substatus when they occur. The limit bits and alarm status are only removed when the
measured value undershoots the affected limit in the opposite direction again by the value of the set
hysteresis.
SITRANS F with PROFIBUS PA
C79000-B5676-C114-03
Current Lower
measured value value
Valid measured values
Upper
value
Measuring scale
Instruction Manual
Measured value
Upper
sensor
limit
31