1 Starting & Stopping Motors Pico Pico LAB#4

2 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. What we are going to do:

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

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

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 P [Q1 I 2--I [Q2 -Q2- Q1--Q [Q3

6 12-Point Status Display Real Time Clock Day of the week Time Input Status OFF/ ON Output Status OFF/ ON Mode RUN/STOP I P SU 12:00 Q1234 STOP

7 Creating a new Program 1. Change Mode –The PICO must be in the Stop mode to delete the resident program. –From the “Status Display” screen Press “OK” to display next menu screen. –If this screen is displaying “RUN” The PICO is in “STOP” mode. Proceed to next page and delete program –If this screen is displaying “STOP” The PICO is in “RUN” mode continue with next step –Press “Down” arrow once to highlight “STOP” –Select “STOP” by pressing the “Ok” key when “STOP” is flashing The display will change to “RUN” The PICO is now in the Stop mode Note –left/right arrows: Move cursor –up/down arrows: Change values –The “…” after a menu listing refers to a second level of menus. PROGRAM... STOP PARAMETER SET CLOCK... I TH 12:00 Q1234 RUN PROGRAM... RUN PARAMETER SET CLOCK...

8 Delete existing Program 2. Delete Program –Press “Up” arrow once to highlight “Program” –Select “PROGRAM” by pressing the “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... DELETE ?PROGRAM DELETE PROG PROGRAM... RUN PARAMETER SET CLOCK...

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

10 Setting Day/Time 4. Setting Day / Time –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 PROGRAM RUN PARAMETER SET CLOCK SUMMER TIME WINTER TIME DAY :SU TIME :12:00 WINTER TIME DAY : SU TIME : 12:00

11 Enable the Cursor Push Button 5.Enable cursor buttons –From the “Status Display” screen press the “Del” and “Alt” keys simultaneously –Press “Down” arrow to highlight the “SYSTEM” Menu –Press “Ok” to select –Press “Down” arrow to select “P ON” flashing –Press “Ok” to enable push buttons “P OFF” is flashing. Push buttons are now enabled –Press “Esc” twice to exit to “Status Display” screen Note: Once the cursor push buttons are enabled the user must have logic in the program addressed to the pushbuttons in order for the “P” to be displayed in the Status Screen. PASSWORD… SYSTEM GB D F E I… I SU 12:00 Q1234 STOP DEBOUNCE OFF P ON MODE: STOP RETENTION ON DEBOUNCE OFF P OFF MODE: STOP RETENTION ON

12 Creating Ladder Logic 6.Create a New Program –From the “Status Display” screen press “OK” to display next 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 PROGRAM… RUN PARAMETER SET CLOCK… I SU 12:00 Q1234 STOP PROGRAM DELETE PROG

13 Creating the 1st Rung of Ladder Logic Program rung 1 : 6.Add I/O instructions –Press “Ok” to insert input –Press “UP” arrow once to select the “P” input –Press “Ok” to accept the input “P” –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. P [Q1 P1P P [Q1 P [Q1

14 P [Q1 P2 Program this 2nd rung: 7.Add Input instructions –Press “Ok” to insert input –Press “UP” arrow once to select the “P” input –Press “Alt” to select break contact function (Normally Closed). Press “Ok” to accept –Press “UP” arrow to select the input address “2” –Press “Ok” to accept input “P 2 ” –Press “Ok” to select the next input –Press “UP” once to select “P” –Press “OK” to accept “P” –Press “UP” arrow to select the input address of “3” –Press “Ok” to accept input “P 3 ” –Press “Alt” to activate the draw function –Press “Right” arrow once to draw the connection –Press “Alt” to exit the draw function P [Q1 P2—P3 P [Q1 P2--P Creating the 2nd Rung of Ladder Logic 8 P [Q1 P2--P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2-

15 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 “P 3 ” –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 8 P [Q1 P2---P [Q2 P [Q1 P2--P [Q2 -Q2- P [Q1 P2---P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2-

16 P [Q1 P2--P [Q2 -Q2- 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 8 P [Q1 P2--P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2- P [Q1 P2--P [Q2 -Q2-

17 P [Q1 P2--P [Q2 -Q2- Q1--Q 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 “Down” arrow to select “Q” –Press “Ok” to accept input “Q” –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 8 P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3 P [Q1 P2--P [Q2 -Q2- Q1 P [Q1 P2--P [Q2 -Q2- Q1--Q2 P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3

18 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” 8 P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3 P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3 P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3

19 Monitor the program. 13. Change Mode –Press “Esc” to exit back to the 2nd “Menu” screen –Press “Esc” to exit back to the 1st “Menu” screen –Press “Down” arrow to Highlight (Flashing) “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 and verify the “P” in the upper right corner of the screen. 14. Monitor the Ladder –The P-buttons are only recognized as switch contacts in the Status menu and not in any other display –Press “OK” twice to enter the ladder program PROGRAM… RUN PARAMETER SET CLOCK… PROGRAM DELETE PROG I P TH 12:00 Q1234 RUN P [Q1 P2--P [Q2 -Q2- Q1--Q [Q3

20 Monitor the Program PROGRAM OPERATION – RUNG 0-Press cursor pushbutton # P1 output #Q1 will turn ON release the pushbutton and output #Q1 will turn OFF. This output is dependent on the input condition. Verify this from the status screen. The “P” will display “P1” and the “Q1” will enable. – RUNG 1-Press cursor pushbutton # P3 (start button) output # Q2 will latch ON. Press input pushbutton # P2 (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. P1 P4 P3 P2 I P1 TH 12:00 Q1234 RUN I P3 TH 12:00 Q1234 RUN I P1 TH 12:00 Q1234 RUN I P1 TH 12:00 Q1234 RUN