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5.3.3.1 Setting DIO as an Input
To use a DIO pin as an input, make sure it is set to
Active Low
(default) in the
Output Tab
in SYNC.
Then, in the
Input Tab
, select a
Type
from the drop-down which includes DIO. Each DIO pin has an internal
pull-up, but to save power, the internal pull-up is only active when the unit takes a reading.
5.3.4 Advanced Scaling Options
The Layer N SP-013 allows for advanced scaling options on process and pulse inputs only. The
Advanced
Scaling
checkbox can be selected to expand additional configuration options. A gain and/or offset can be
applied to the input reading and the displayed unit can be changed.
To apply a gain or offset to the input, expand the
Scaling
menu and ensure that
Apply Scaling
is checked.
There, the gain and offset values can be adjusted. Both positive and negative values may be entered as well
as decimal numbers. The equation for the scaled input value is given below.
𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰
𝑺𝑺𝑺𝑺𝑺𝑺𝑺𝑺𝑺𝑺𝑺𝑺
= (
𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰𝑰
𝑹𝑹𝑺𝑺𝑹𝑹
×
𝑮𝑮𝑺𝑺𝑮𝑮𝑰𝑰
) +
𝑶𝑶𝑶𝑶𝑶𝑶𝑶𝑶𝑺𝑺𝑰𝑰
The displayed units can be changed by entering a new value in the
Unit
field and clicking
Apply Settings
.
This field is limited to a maximum of 4 characters. Note that changing the Unit field does not change the
base unit type, only the display name. The
Lock
checkbox must be selected to use the user-defined Unit
field. Unchecking the Lock checkbox and clicking
Apply Settings
will revert the unit display back to the
default setting.
Figure 21: SYNC interface outputs tab
Figure 22: SYNC interface Digital_IO