B&B Electronics ZXT9-IOA-KIT - Manual - Manual (Page 73)

Glossary
Manual Documentation Number: ZXTx-IO-x-4113m 67
G G l l o o s s s s a a r r y y
ADC
Analog to digital converter.
Analog Input (AI)
An analog input is a measurable electrical signal with a defined range that is generated by a sensor and received by a
controller. The analog input changes continuously in a definable manner in relation to the measured property.
Analog Output (AO)
An analog output is a measurable electrical signal with a defined range that is generated by a controller and sent to a
controlled device, such as a variable speed drive or actuator. Changes in the analog output cause changes in the controlled
device that result in changes in the controlled process.
Cu10
Copper 10 Resistance thermometers, also called resistance temperature detectors (RTDs), are temperature sensors that
exploit the predictable change in electrical resistance of some materials with changing temperature. They are slowly replacing
the use of thermocouples in many industrial applications below 600 °C, due to higher accuracy and repeatability.
DCE
Data Communications Equipment. This indicates how a serial cable, DB9 or DB25 is pined out as far as inputs and outputs
are concerned. A straight through serial cable can be used when connecting a DTE device to a DCE device, but a null modem
cable is required to connect a DCE to DCE or DTE to DTE device.
DIN
A standardized 35 mm wide metal rail used for mounting industrial equipment inside racks and enclosures.
Digital Input (DI)
A digital input typically consists of a power supply (voltage source), a switch and a voltage-sensing device (analog-to-digital
converter).
Depending on the switch’s open/closed status, the sensing device detects a voltage or no voltage condition, which
in turn generates a logical 0 or 1, ON or OFF, alarm or normal or similarly defined state.
Digital Output (DO)
A digital output typically consists of a switch (either mechanical as in a relay, or electronic as in a transistor or triac) that either
opens or closes the circuit between two terminals depending on the binary state of the output.
FCC
The Federal Communications Commission (FCC) is an independent United States government agency. The FCC was
established by the Communications Act of 1934 and is charged with regulating interstate and international communications by
radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S.
possessions.
LOS
Line-of-sight propagation refers to electro-magnetic radiation including light emissions traveling in a straight line. The rays or
waves are diffracted, refracted, reflected, or absorbed by atmosphere and obstructions with material and generally cannot
travel over the horizon or behind obstacles.
PLC
Programmable controllers operate by producing signals that are sent to devices connected to PLC outputs.