Endress+Hauser PROFIBUS-DP, Руководство по эксплуатации, Страница: 19 / 52

SmarTec S CLD 132 PROFIBUS-PA/-DP Operation
Hauser 19
C07-CLD132xx-02-06-00-en-007.eps
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Limit values
You can set two warning limits and two alarm limits for monitoring your process. The
status of the measured value and the parameters of the limit-value alarms are
indicative of the measured value’s relative position. You also have the option of
defining an alarm hysteresis in order to avoid frequent changes of the limit-value flags
and frequent enabling/disabling of alarms.
The limit values are based on the OUT output value. If the OUT output value exceeds or
undershoots the defined limit values, the automation system is alarmed via the limit
value process alarms (see below).
The following limit values can be defined:
– HI_LIM, HI_HI_LIM
– LO_LIM, LO_LO_LIM
Alarm detection and processing
Limit value process alarms are generated by the Analog Input function block.The
status of the limit value process alarms is communicated to the automation system by
means of the following parameters:
– HI_ALM, HI_HI_ALM
– LO_ALM, LO_LO_ALM
Transducer
Block
25 °C
-10
150
°C
77 °F
14
°F
302
OUT
PV_SCALE OUT_SCALE
0
0
100
100
%
tempe-
rature
Analog Input Function Block
–10 ... 150 °C
HAUSER
SMARTEC S HAUSER
SMARTEC S
ALARM
CAL
E
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