1. Pico Pico LAB#1
Starting & Stopping Motors

2. What we are going to do:
Program a series of three basic ladder logic rungs. These basic rungs are the most common rungs found in every ladder program.
Each of these rungs will help you to “Frame” how a Pico is programmed, and how they operate.

3. Pico Overview, Features
1. Incoming Power connection
2. Inputs connections
3. Keypad
4. Communication Cable, Memory module interface cover
5. Outputs connections
6. LCD Display
7. Write-On Surface 1 2 3 6 4 7 5

4. Pico Overview, Operating Buttons
1.Del- Delete object in the circuit diagram
2.Alt- Special functions in the circuit diagram
3.Cursor Buttons-
Move cursor
Select menu items
Choose contact numbers, values, times, etc
P-button function (when enabled)
Left arrow, Input P1
Up arrow, Input P2
Right arrow, Input P3
Down arrow, Input P4
4.Ok- Next menu level, store your entry
5.Esc- Previous menu level, cancel your entry 1 2 3 4 5

5. Pico Overview, Circuit Diagram Symbols
1. Input Field
2. Output Coil Field
Circuit Diagram Symbols
P- Cursor button as input
I - Contact for input
Q - Contact for output
M - Contact for internal marker relay
T - Contact for timer relay
C - Contact for counter relay
- Contact for real time clock contact
A - Analog comparator contact 2 1
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3

6. 12-Point Status Display Real Time Clock Input Status Day of the week
OFF/ON
Output Status
Mode
RUN/STOP I SU
12:00
Q STOP
Given everything I’ve told you thus far, how can you practically apply the Pico?
The Pico is ideal for relay replacement. You can use the Pico to cost- effectively replace 3-4 relays or a single timing relay. And if you want to change system functions, all you have to do is reprogram the Pico. No rewiring is necessary.
Again, the Pico’s real time clock makes it ideal for applications that must control outputs based upon the time of day or day of the week. For example, you can schedule lights to turn on and off throughout the day or throughout the week. You can even use the Pico to restrict building access based upon a certain schedule.
The Pico is better than a single-board controller in many ways, because it’s a standard product that’s ready to go right off the shelf. And because it’s from Rockwell Automation, you have access to support and programming knowledge anywhere in the world.
Finally, the Pico is so much easier to use than a PLC. There’s no complex software package to learn, and learning to program the Pico is as simple as working with the built in display.

7. Delete existing Program
1. Change Mode
The PICO must be in the Stop mode to delete the resident program if one exists in the PICO
From the “Status Display” screen Press “OK” to display next menu screen.
If this screen is displaying “RUN” The PICO is already in the “STOP” mode. Proceed to next page to delete the resident program
If this screen is displaying “STOP” The PICO is in “RUN” mode continue with next step
Press “Down” arrow once to highlight “STOP” the “STOP” is flashing
Press “Ok” key the display will change to “RUN” The PICO is now in the “STOP” mode. You are now ready to delete the program in the PICO
Note
left/right arrows: Move cursor
up/down arrows: Change values
The “…” after a menu listing refers to a second level of menus. I TH
12:00
Q RUN
PROGRAM...
STOP
PARAMETER
SET CLOCK...
PROGRAM...
RUN
PARAMETER
SET CLOCK...

8. Delete existing Program
2. Delete Program
From this screen press the “Up” arrow to select “PROGRAM…”
Press “Ok” key when “PROGRAM…” is flashing.
Press “Down” arrow to select “DELETE PROG”
Press “Ok” to accept “DELETE PROG”
Press “Ok” to accept “DELETE?”
Press “Esc” to exit back one menu screen
PROGRAM...
RUN
PARAMETER
SET CLOCK...
PROGRAM...
RUN
PARAMETER
SET CLOCK...
PROGRAM
DELETE PROG
DELETE ?

9. Setting Day/Time 3. Setting Day / Time PROGRAM... RUN PARAMETER
Press “Down” arrow three times to highlight “SET CLOCK...”
Press “Ok” to select “CLOCK SET…”
Press “Ok” to edit “CLOCK SET”
PROGRAM...
RUN
PARAMETER
SET CLOCK...
PROGRAM...
RUN
PARAMETER
SET CLOCK...
SET CLOCK
SUMMER TIME
WINTER TIME
DAY : SU
TIME : 12:00

10. Setting Day/Time 4. Setting Day / Time WINTER TIME DAY : SU
Press “Left” or “Right” arrow once to move to the Day of week
Press “Up” or “Down” arrow to select the Day of week
Press “Left” or “Right” arrow to move to the Time of day. Time of day is displayed in military
Press “Up” or “Down” arrow to select correct Time of day
Press “Ok” to accept edits
Press “Ok” to exit “SET CLOCK” display
Press “Esc” twice to exit back to “Status Display” screen
WINTER TIME
DAY : SU
TIME : 12:00
WINTER TIME
DAY :SU
TIME :12:00
SET CLOCK
SUMMER TIME
PROGRAM
RUN
PARAMETER
SET CLOCK

11. Creating Ladder Logic 5.Create a New Program I12345678 SU 12:00
From the “Status Display” screen press “OK” to display next menu screen
Select “PROGRAM…” by pressing the “Ok” key when “PROGRAM” is flashing
Select “PROGRAM” by pressing the “Ok” key when “PROGRAM” is flashing
You are now ready to start programming the PICO I SU
12:00
Q STOP
PROGRAM
RUN
PARAMETER
SET CLOCK
PROGRAM
DELETE PROG

12. Creating the 1st Rung of Ladder Logic
Program rung 1 :
6.Add I/O instructions
Press “Ok” to insert input
Press “Ok” to accept the input “I”
Press “Ok” to accept the input address “1”
Press “Alt” to activate the draw function
Press “Right” arrow twice to draw the connection
Press “Alt” to exit the draw function
Press “Ok” to insert output
Press “Ok” to accept output “Q”
Press “Ok” to accept output address “1”
Press “Ok” to accept the output. This will start the next rung.
I [Q1
I [Q1
I 1 I
I [Q1

13. Creating the 2nd Rung of Ladder Logic
Program this 2nd rung:
7.Add Input instructions
Press “Ok” to insert input “I”
Press “Alt” to select break contact function (normally closed contact). Press “Ok”
Press “UP” arrow to select the input address “2”
Press “Ok” to accept input “I2”
Press “Ok” to select the input instruction “I”. Press “Ok” to accept instruction type
Press “UP” arrow to select the input address of “3”
Press “Ok” to accept input “I3”
Press “Alt” to activate the draw function
Press “Right” arrow once to draw the connection
Press “Alt” to exit the draw function
I [Q1
I 2--I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2- 8
I [Q1
I 2
I [Q1
I 2--I 3
I [Q1
I 2--I

14. Creating the 2nd Rung of Ladder Logic, cont.
Program this 2nd rung:
8.Add Output instruction
Press “Ok” to insert output
Press “Ok” to accept output “Q”
Press “Up” arrow to select “2”
Press “Ok” to accept output “Q2”. This will start the next rung
9.Add Branch
Press “Right” arrow once to move under the “I3”
Press “Ok” to select input
Press “Down” once to select “Q”
Press “Ok” to accept “Q”
Press “Up” arrow to select the input address of “2”
Press “Ok” to accept input “Q2”.
Press “Alt” to activate the draw function
Press “Up” arrow once to draw branch
I [Q1
I 2--I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2- 8
I [Q1
I 2---I [Q2
I [Q1
I 2---I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2-

15. Creating the 2nd Rung of Ladder Logic, cont.
Program this 2nd rung:
10.Add Branch
Press ”Left” arrow once to move to the left side of “I3”
Press “Alt” to activate the draw function
Press “Down” arrow once to draw branch
Press “Alt” to exit the draw function
Press “Left”arrow once and “Down” arrow once. This will start the new rung
I [Q1
I 2--I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2- 8
I [Q1
I 2--I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2-
I [Q1
I 2--I [Q2
-Q2-

16. Creating the 3rd Rung of Ladder Logic, cont.
Program this 3rd rung:
11. Add Input instructions
Press “Ok” to insert input
Press “Down” arrow to select “Q”
Press “Ok” to accept input “Q”
Press “Ok” to accept the input address of “Q1”
Press “Ok” to insert 2nd input
Press “Up” arrow to select “2”
Press “Ok” to accept the input address of “Q2”
Press “Alt” to activate the draw function
Press “Right” arrow once to draw connection
Press “Alt” to exit draw function
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3 8
I [Q1
I 2--I [Q2
-Q2- Q1
I [Q1
I 2--I [Q2
-Q2-
Q1--Q2
I [Q1
I 2--I [Q2
-Q2-
Q1--Q

17. Creating the 3rd Rung of Ladder Logic, cont.
Program this 3rd rung:
12. Add Output instruction
Press “Ok” to insert output
Press “Ok” to accept output “Q”
Press “Up” arrow to select “3”
Press “Ok” to accept output address “Q3”
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3 8
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3

18. Monitor the program. 13. Change Mode 14. Monitor the Ladder
Press “Esc” twice to exit back to the 1st “MENU DISPLAY” screen
Press “Down” arrow to Highlight “RUN”
Press “Ok” to accept the RUN mode
The PICO is now running
Press “Esc” to exit back to the “Status Display. In this screen you can monitor the I/O
14. Monitor the Ladder
Press “OK” twice to enter the ladder program
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3
PROGRAM
DELETE PROG
PROGRAM
RUN
PARAMETER
SET CLOCK I TH
12:00
Q RUN

19. Monitor the Program PROGRAM OPERATION I 1-------------[Q1
RUNG 0- Because the input simulators have latching pushbuttons. Press input pushbutton # I1 so as not to latch the pushbutton, output #Q1 will turn ON release the pushbutton and output #Q1 will turn OFF. This output is dependent on the input condition.
RUNG 1-Press input pushbutton # I3 (start button) so as not to latch the pushbutton, output # Q2 will latch ON. Lightly press input pushbutton # I2 (stop button) will turn OFF output #2. This is a simple motor control circuit. This circuit utilizes both AND and OR placement of instructions.
RUNG 2- The two inputs on rung 2 are conditions of rungs 0 and 1. The output (output #Q3) is a condition of the two inputs. So each outputs of rungs 0 and 1 must be true to turn on output #Q3. This circuit utilizes AND placement of instructions.
I [Q1
I 2--I [Q2
-Q2-
Q1--Q [Q3