Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 210)

Publication 1760-UM001D-EN-P - September 2005
Glossary 2
Memory Module - The memory module is used to store your Pico
circuit diagram, together with its parameter and Pico settings. Your
data on the memory module will be retained, even if the power
supply fails or is switched off. The memory module is inserted into
the interface slot on the Pico device.
Operating buttons - Pico has eight operating buttons. These are
used to select menu functions and create circuit diagrams. The large
round button in the middle is used to move the cursor. DEL, ALT, ESC
and OK all perform additional functions.
Operating mode - Pico has two operating modes: RUN and STOP.
RUN mode is used to process your circuit diagram (with the controller
running continuously). In STOP mode you can create your circuit
diagrams.
Output - You can connect various loads to the four Pico outputs, such
as contactors, lamps or and motors. In the circuit diagram, the outputs
are activated via output relay coils Q1 to Q4 (or Q6) on the controllers
or S1 through S6 (or S8) on the expansion modules.
P buttons - The P buttons can be used to simulate four additional
inputs which are controlled directly by the four cursor buttons, rather
than via external contacts. The relay contacts of P buttons are
connected up in the circuit diagram.
Parameters - Parameters enable the user to set the behavior of a
function relay. Examples include switching times or counter setpoints.
They are set in the parameter display.
Power supply - Pico AC controllers are powered by 120 to 240V ac,
50/60 Hz. The terminals are labeled ‘L1’ and ‘L2’. Pico 1760-LxxBWB
controllers are powered by 24V dc. The terminals are labeled ‘+24V’
and ‘com’. 1760-LxxDWD controllers are powered by 12V dc. The
terminals are labeled ‘+12V’ and ‘com’.
Retention - The retentive data is kept even after the Pico power
supply is switched off. The following data is retentive:
• Pico circuit diagram
• Parameters, setpoint values
• Text displays
• System settings
• Password entry
• Actual values of marker relays, timing relays, counters