Endress+Hauser Levelflex FMP51 Operating Instructions Manual page 196

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Factory setting
Switch-on value
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196
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 Setup → Advanced setup → Switch output → Switch-on value
Switch output function (→  194) = Limit
Defines the switch-on point. The output is closed if the assigned process variable rises
above this point.
Signed floating-point number
0
The switching behavior depends on the relative position of the Switch-on value and
Switch-off value parameters:
Switch-on value > Switch-off value
– The output is closed if the measured value is larger than Switch-on value.
– The output is opened if the measured value is smaller than Switch-off value.
A Switch-on value
B Switch-off value
C Output closed (conductive)
D Output opened (non-conductive)
Switch-on value < Switch-off value
– The output is closed if the measured value is smaller than Switch-on value.
– The output is opened if the measured value is larger than Switch-off value.
Levelflex FMP51, FMP52, FMP54 HART
A
B
t
C
D
t
A0015585
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