Hitachi WJ200 Series

3−67
Window Comparator, Analog disconnection
The window comparator function outputs signals when the values of analog inputs O
and OI are within the maximum and minimum limits specified for the window
comparator. You can monitor analog inputs with reference to arbitrary levels (to find
input terminal disconnection and other errors).
You can specify a hysteresis width for the maximum-limit and minimum-limit levels of
the window comparator. You can also specify limit levels and a hysteresis width
individually for analog inputs O and OI.
You can fix the analog input data to be applied to an arbitrary value when WCO or
WCOI is output. For this purpose, specify a desired value as the operation level at O/OI
disconnection (b070/b071/b072). When “no” is specified, the analog input data is
reflected as input.
Output values of Odc and OIDc are the same as those of WCO and WCOI, respectively.
“b” Function
Run
Mode
Edit
Defaults
Func.
Code
Name Description Lnitial data Units
B060
Maximum-limit level of
window comparator (O)
Set range, {Min.-limit level (b061) +
hysteresis width (b062)x2} to 100 %
(Minimum of 0%)
U
100. %
B061
Minimum-limit level of
window comparator (O)
Set range, 0 to {Max.-limit level
(b060) - hysteresis width
(b062)x2} % (Maximum of 0%)

0. %
B062
Hysteresis width of
window comparator (O)
Set range, 0 to {Max.-limit level
(b060) - Min.-limit level (b061)}/2 %
(Maximum of 10%)

0. %
B063
Maximum-limit level of
window comparator (OI)
Set range, {Min.-limit level (b064 +
hysteresis width (b065)x2} to 100 %
(Minimum of 0%)

100. %
B064
Minimum-limit level of
window comparator (OI)
Set range, 0 to {Max.-limit level
(b063) - hysteresis width
(b065)x2} % (Maximum of 0%)

0. %
b065
Hysteresis width of
window comparator (OI)
Set range, 0 to {Max.-limit level
(b063) - Min.-limit level (b064)}/2 %
(Maximum of 10%)

0. %
b070
Operation level at O
disconnection
Set range, 0 to 100%, or “no”
(ignore)
U
no
−
b071
Operation level at OI
disconnection
Set range, 0 to 100%, or “no”
(ignore)
U
no
−
Hysteresis width
(b062, b065, b068)
A
nalog input data
A
pplied analog data
O or OI
Max.(100%)
0%
WCO/WCOI
Odc/OIDc
Max.-limit level of window
comparator (b061/b064)
Min.-limit level of window
comparator (b060/b063)
A
nalog operation level at
disconnection (b070/b071)
ON ON ON