45
6
Setting and Operation Related to Comparison
45
Setting
a
nd Op
er
ation
Rela
ted to Co
mpa
rison
Chapter
6
6-2.
HI limit / LO limit / HH limit / LL limit
This function sets the HI limit and LO limit, turns the HI output ON when an indicated value
exceeds the HI limit value, and turns LO output ON when an indicated value falls below the LO
limit value. HH limit and LL limit can also be set outside of these HI/LO limit comparisons. HH
output is turned ON when an indicated value exceeds the HH limit value, and LL output is turned
ON when the indicated value falls below the LL limit value. When HI, HH output, LO, and LL
output are all OFF, OK output is turned ON.
* HH output and LL output are output if HH limit and LL limit are set in output selection 1 and
output selection 2.
* Decision output timing changes depending on setting values of HI/LO limit comparison mode
and hysteresis.
<HI/LO output conditions>
HI:
Indicated value > HI limit setting value
LO:
Indicated value < LO limit setting value
<HH/LL output conditions>
HH:
Indicated value > HH limit setting value
LL:
Indicated value < LL limit setting value
<OK output conditions>
OK:
When HH, HI, LO, and LL are all OFF
●
Output operations of HI, LO, HH, and LL
Indicated value
HH limit
HI
OFF
ON
LO
OFF
ON
Time
LO limit
HI limit
LL limit
HH
OFF
ON
LL
OFF
ON
OK
OFF
ON
e.g.) HI/LO limit comparison mode: Ongoing comparison
Hysteresis:
0
