Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 228)

Glossary
Appendix A
AĆ4
Position Readout: A display of absolute slide position as derived from a
position feedback device that is normally attached to the leadscrew of the
machine.
Programmed Dwell: The capability of commanding delays in program
execution for a programmable length of time.
Read: 1) To acquire data from a source. 2) Block Transfer; a transfer of
data from an intelligent I/O module to the processor data table.
Register: A memory word or area used for temporary storage of data
used within mathematical, logical, or transferral functions.
Shield: A conductive barrier that reduces the effect of electric and or
magnetic fields.
Sign: The symbol or bit that distinguishes positive from negative
numbers.
Signal: The event or electrical quantity that conveys information from
one point to another.
Significant Digit: A digit that contributes to the precision of a value.
The number of significant digits is counted beginning with the digit
contributing the most value, called the most significant digit, and ending
with the one contributing the least value, called the least significant digit.
Step Response: The time response of an instrument subjected to an
instantaneous change in input.
Summing Point: A point at which signals are added algebraically.
Tachometer: A precision linear DC generator used to provide velocity
feedback.
True: As related to PC instructions, an enabled logic state.
Write: 1) The process of loading information into memory. 2) Block
Transfer; a transfer of data from the processor data table to an intelligent
I/O module.