Publication 1769-UM005A-EN-P
4-8
Module Data, Status, and Channel Configuration
Enabling or Disabling a Channel (Bit 15)
Bit 15 enables or disables each of the six channels individually. The
module only scans those channels that are enabled. Enabling a channel
forces it to be recalibrated before it measures input data. Turning a
channel off results in the channel data being set to zero.
Selecting Data Format (Bits 12 to 14)
Bits 12 through 14 of the channel configuration word are used to indicate
the input data format. You may choose any of the following formats:
•
raw/proportional
•
engineering units x 1
•
engineering units x 10
•
scaled for PID
•
percent of full scale
NOTE
When a channel is not enabled, the A/D converter
provides no input to the controller. This speeds up the
system response of the active channels.
The configuration default is to disable each input channel
to maximize module performance.
NOTE
The engineering units data formats represent real
temperature or resistance engineering units provided
by the module. The raw/proportional counts,
scaled-for-PID, and percent of full scale data formats
The raw/proportional counts, scaled-for-PID and
percent of full-scale data formats may yield the
highest effective resolutions, but may also require that
you convert channel data to real engineering units in
your control program.
Содержание Compact 1769-IR6
Страница 1: ...Compact I O RTD resistance Input Module Catalog Number 1769 IR6 User Manual AB PLCs ...
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Страница 40: ...Publication 1769 UM005A EN P 3 16 Installation and Wiring ...
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Страница 116: ...Publication 1769 UM005A EN P February 2001 2001 Rockwell International Corporation Printed in the U S A ...