WIKA DI35 - Manual (Page 34)

6 Commissoning, operation
34 WIKA operating instructions digital indicator DI35-M
PN8 = Actuation for taring
0 none
1 Digital input active, longer than 3 seconds
2 Multi-function key actuated for longer than 3 seconds
3 Digital input or multi-function key active for longer than 3 seconds
4 Taring at boot-up
5 Taring at boot-up and with digital input
6 Taring at boot-up and with multi-function key
7 Taring at boot-up, digital input and multi-function key
8 Taring with activated digital input for activation period
9 Fast taring on digital input
10 Fast taring on multi-function key
11 Fast taring on digital input or multi-function key
The taring can be called off by programming of the PN5 offset shift on the
value zero.
A special form is taring PN8 = 8: the taring is not saved in PN5 offset shift,
but charged temporarily for the duration of the activated digital input. The old
tara value gets lost by a boot-up.
The display shows „ooooo“ for approx. 1 second to confirm the taring. Taring
is done only one time after actuation of the desired activator. For a anew
calibration the signal for the activation of the taring must be cancelled.
If the MIN/MAX value reset is programmed on the same activator as the
taring, then after taring a MIN- / MAX value reset takes place, too.
Furthermore the taring can be watched very well as the instantaneous value
is shown directly before and after taring.
PN12: Sliding average value
The complete average time is a results of the product or a multiplication of
time and recorded average value PN14 x PN12. If one wants to see this
result in the display, the display mode PN15 needs to be programmed parallel
on this result. This must be pointed out with an optional analogue output or
with the relays, too.
PN13: Display time
The display time is the interval at which the display is updated. The longer the
time between two display cycles, the calmer the display. The eye perceives a
display time of 1 second as very pleasant.
PN14: Measuring time
The DI35-M performs an averaging process by calculating an average from
several measurements taken during the measuring time (1/measuring time =
Samples/s). For most applications, a measuring time of 0.20 to 1.00 seconds
is suitable.