Specifications

Glossary
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differential input
A type of input design where two wires (+ and -) are run from each signal source to
the data acquisition interface. The voltage between the input and the interface
ground are measured by two high-impedance amplifiers, and the outputs from the
two amplifiers are subtracted by a third amplifier to yield the difference between the
+ and - inputs. Voltage common to both wires is thereby removed. Differential design
solves the problem of ground differences found in single-ended connections, and it
also reduces the cross-channel noise problem.
digital I/O
An input or output that has an individual circuit connection at the module
corresponding directly to a data table bit or word that stores the value of the signal
at that I/O circuit. It allows the control logic to have discrete access to the I/O values.
DIN
Deutsche industrial norms. A German agency that sets engineering and
dimensional standards and now has worldwide recognition.
Drivecom Profile
The Drivecom profile is part of CiA DSP 402 (profile), which defines the behavior of
drives and motion control devices on CANopen networks.
E
economy segment
A special type of STB I/O segment created when an STB NCO 1113 economy
CANopen NIM is used in the first location. In this implementation, the NIM acts as a
simple gateway between the I/O modules in the segment and a CANopen master.
Each I/O module in an economy segment acts as a independent node on the
CANopen network. An economy segment cannot be extended to other STB I/O
segments, preferred modules or enhanced CANopen devices.
EDS
electronic data sheet. The EDS is a standardized ASCII file that contains information
about a network device’s communications functionality and the contents of its object
dictionary. The EDS also defines device-specific and manufacturer-specific objects.