Rockwell Automation Publication 1766-UM001I-EN-P - June 2015 375
Glossary
embedded I/O
Embedded I/O is the controller’s on-board I/O.
EMI
Electromagnetic interference.
encoder
1) A rotary device that transmits position information.
2) A device that transmits a fixed number of pulses for each revolution.
executing mode
Any run or test mode.
expansion I/O
Expansion I/O is I/O that is connected to the controller via a bus or cable.
MicroLogix 1400 controllers use Bulletin 1762 expansion I/O.
false
The status of an instruction that does not provide a continuous logical path on a
ladder rung.
FIFO (First-In-First-Out)
The order that data is entered into and retrieved from a file.
file
A collection of information organized into one group.
full-duplex
A bidirectional mode of communication where data may be transmitted and
received simultaneously (contrast with half-duplex).
half-duplex
A communication link in which data transmission is limited to one direction at a
time.
hard disk
A storage area in a personal computer that may be used to save processor files and
reports for future use.
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