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© Sealevel Systems, Inc. eI/O Manual | SL9221 01/2023
A/D INPUTS TAB
The “A/D Inputs” tab displays the current state of the analog-to-digital channels for Sealevel I/O devices
that feature A/D inputs. Settings are provided for both device wide and per-channel configuration.
The “Device Configuration” selection drop-box adjusts the arrangement and function of the A/D input
channels. Input channels are displayed as banks (groups of up to eight). Each channel is range configurable
via the voltage range dropdown list. Both the channel voltage range and device-wide configuration are set
on a dropdown list. There is no need to save your settings – they are automatically saved to the device as
you select the various configuration options.
“Show Hexadecimal Values” checkbox – Displays the values returned by the A/D converter as a
hexadecimal value without converting the values to engineering units (i.e., Amps or Volts).
CONVERTING A/D VALUES
To properly use the values returned from the eI/O-170 module’s A/D channels, the application program
must convert the returned values to engineering units (voltage).
The conversion formulas will vary depending on how the I/O module is configured. The formulas and their
uses are covered in detail in the interactive documentation located on the Sealevel website at
http://www.sealevel.com/software/SeaMAX/
. For ease of use, SeaMAX functions to convert A/D values
have been provided. Use of these functions is also detailed in the SeaMAX Software Manual.
