Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 209)

1 Publication 1760-UM001D-EN-P - September 2005
Glossary
The following terms are used throughout this manual. Refer to the
Allen-Bradley Industrial Automation Glossary, Publication Number
AG-7.1, for a complete guide to Allen-Bradley technical terms.
Analog input - The DC versions of Pico have analog inputs I7 and I8.
The input voltage range is 0 V to 10 V. Input data is evaluated by
built-in analog comparator function relays.
Circuit connections - Every line in the circuit diagram display
represents a circuit connection.
Circuit diagram elements - As in conventional wiring, the circuit
diagram is made up of circuit elements. These include input, output
and marker relays, plus function relays and the P buttons.
Connect mode - Connect mode is used to wire up the circuit
elements in your Pico circuit diagram.
Contact behavior - The contact behavior of any circuit element can
be defined as either a break contact or a make contact. Break contact
elements are identified by a line on top of the identifier (Exception:
conditional jumps).
Entry mode - Entry mode is used to input or modify values when
creating circuit diagrams or setting parameters, for example.
Flip-flop relay - An impulse relay is a relay which changes its
switching state and stays changed (latched) when a voltage is applied
to the relay coil for a short time.
Function relay type - Function relays are provided for more
complex switching tasks. Pico features the following types of relay:
• Timing relays
• Time switches
• Counters
• Analog comparators
• Text marker relays
Input - The inputs are used to connect up external contacts. In the
circuit diagram, inputs are evaluated via contacts I1 to I12 (or R1 to
R12 on the expansion modules). Pico DC units can also receive analog
data via inputs I7 and I8.
Interface - The Pico interface is used to exchange and save circuit
diagrams to a memory card or PC. Each memory card contains one
circuit diagram and its associated Pico settings. The PicoSoft PC
software allows you to control Pico from your PC which is connected
using the 1760-CBL-PM02 cable.