A-lo; +/- 20, Adc f – Omega Vehicle Security OMP-MODL User Manual

Page 173

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11.. . A

PPENDIX

A: M

ASTER

I

CON

R

EFERENCE

U

SING THE

OMP-MODL

11-11

M

A-LO; +/- 20

M

ADC F

ULL

S

CALE

C

URRENT

I

NPUT

I

CON

FUNCTION:

Performs the analog channel selection, amplification, and A-D conversion for a DC
current input within the range of +/-20mADC from an MLIM-1 Interface Module.

INPUTS:

Hardware: No signal input shown on Net for Program Net connections.

Update Clock:

Output is updated with new reading upon each Update Clock pulse

when Enable input is unconnected or Hi.

Enable:

Processing of icon is allowed when Enable pin is unconnected or connected
and Enable signal is TRUE.

OUTPUTS:

Output Signal:

Data type signal. The Units of the output are mA.

ICON CONFIGURATION DIALOG BOX:

CONFIGURATION OPTIONS:

Icon Name: Specify the name for the channel. This name will show directly under the

icon within the Program Net. If no name is User provided, the Backplane
Port (1 to 6) and Channel (A to D) where the actual Interface Module
channel is installed will be used for the name.

Output Name:

Specify a name for the Output signal from this icon. This Output

Name will be referenced by other icons downstream in the Program Net.

Range:

Specify the input range to be used for this channel. Select the range so
that anticipated input signal fluctuations will not exceed this Full Scale
range. If the input exceeds the selected range, an over-range value will be
logged.

AC Noise Reject:

Enables software filtering of 50Hz or 60Hz noise on inputs. See

Appendix for an explanation of the 50/60 Hz filtering technique.

Filtering:

First order noise filtering can be enabled during channel reading. First

order filtering reduces high frequency noise that may be picked up by sensor wiring with

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