Rockwell Automation 1746-NI8 SLC 500 Analog Input Modules User Manual - Manual (Page 86)

Glossary G–3
Publication 1746Ć6.8 - April 1997
normal mode rejection - (differential mode rejection) A logarithmic
measure, in dB, of a device’s ability to reject noise signals between
or among circuit signal conductors.
output image - The output from the SLC processor to the 1746-NI8
module. The output image contains the module configuration
information. Each output word configures a single channel.
remote configuration - A control system where the chassis can be
located several thousand feet from the processor chassis. Chassis
communication is via the 1747-SN Scanner and 1747-ASB Remote
I/O Adapter.
resolution - The smallest detectable change in a measurement,
typically expressed in engineering units (e.g. 1 mV) or as a number
of bits. For example a 12-bit system has 4,096 possible output
states. It can therefore measure 1 part in 4096.
scaling - The process of changing a quantity from one notation to
another.
status word - Contains status information about the channel’s
current configuration and operational state. You can use this
information in your ladder program to determine whether the
channel data word is valid.
step response time - This is the time required for the channel data
word signal to reach a specified percentage of its expected final
value, given a large step change in the input signal.
transducer - A device that converts one energy form to another
(e.g., mechanical to electrical). When a transducer is actuated by
signals from one system or medium, it can supply a related signal to
the other system or medium.