Hitachi WJ200-001S Instruction Manual page 152

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 (//). 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.
Func.
Name
Code
Maximum-limit level of

window comparator (O)
Minimum-limit level of

window comparator (O)
Hysteresis width of

window comparator (O)
Maximum-limit level of

window comparator (OI)
Minimum-limit level of

window comparator (OI)
Hysteresis width of

window comparator (OI)
Operation level at O

disconnection
Operation level at OI

disconnection
O or OI
Max.(100%)
Hysteresis width
(, , )
0%
WCO/WCOI
Odc/OIDc
"b" Function
Set range, {Min.-limit level () +
hysteresis width ()x2} to 100 %
(Minimum of 0%)
Set range, 0 to {Max.-limit level
() - hysteresis width
()x2} % (Maximum of 0%)
Set range, 0 to {Max.-limit level
() - Min.-limit level ()}/2 %
(Maximum of 10%)
Set range, {Min.-limit level ( +
hysteresis width ()x2} to 100 %
(Minimum of 0%)
Set range, 0 to {Max.-limit level
() - hysteresis width
()x2} % (Maximum of 0%)
Set range, 0 to {Max.-limit level
() - Min.-limit level ()}/2 %
(Maximum of 10%)
Set range, 0 to 100%, or "no"
(ignore)
Set range, 0 to 100%, or "no"
(ignore)
Applied analog data
Analog input data
ON ON
Description
ON
367
Defaults
Run
Mode
Initial data Units
Edit
100. %

0. %

0. %

100. %

0. %

0. %

no


no 

Max.-limit level of window
comparator (/)
Analog operation level at
disconnection (/)
Min.-limit level of window
comparator (/)