Interact Online

Online Ladder Diagram Notation

• When the PLC is running the program, there are indications in the ladder that display changes being made.

• The blue square in between a contact represents that the contact is receiving power, and the contact is ON (1).
• When a contact does NOT have a blue square, the contact is not receiving power, and the contact is OFF (0).
• Blue values will appear over the data registers if there have a value assigned.
  • This representation the integer value of the data registers.
    • The notation siplays are signed, unsigned, and Hexadecimal.

Change Value Notation

• To change the value notation to signed, unsigned, and hexadecimal, left-click the Notation icon.
  • Left-click the Notation icon to cycle through each value notation.

Signed Values

• Values with a + or – are considered signed values.
  • The signed value range:
    • WORD: -32,768 ~ 32,767 (2¹⁶)
    • DWORD: -2,147,483,648 ~ 2,147,483,647 (2³²)

Unsigned Values

• Values without a + or – are considered unsigned values
  • The unsigned value range:
    • WORD: 0 ~ 65,535 (2¹⁶)
    • DWORD: 0 ~ 4,294,967,295 (2³²-1)

Hexadecimal Values

• Values with a H are considered Hexadecimal values.
  • The Hexadecimal value range:
    • WORD: H0000 ~ HFFFF
    • DWORD: H00000000 ~ HFFFFFFFF

Interact Online

• While the PLC is connected and running the current program it is possible to interact with the contacts and instructions to change their values.

Contact Manipulation

Step 1: To interact with a contact, left-click the contact and type SHIFT + ENTER.

• Data registers with write access can be interacted with.
  • X data registers are read only.
    • Refer below for forced I/O

• All contact types can be interacted with.

Data Register Manipulation

Step 1: To change the data register value, left-click the instruction with a data register and type SHIFT + ENTER.

Step 2: Specify the new value for each data register and left-click OK.

• The value of the data registers has changed.

Forced I/O

• Forced I/O is used to forcibly manipulate X and Y data registers.

Step 1: Connect the PLC to the computer.

Step 2: Left-click N/D.

Step 3: Select the Enable option for the X and Y and left-click Download.

• The watermark will now display a blue X/Y.

• To energize/deenergize the X data register contact, type CTRL + I.
  • Note: there may be a small delay after pressing.
• To energize/deenergize the Y data register contact, type CTRL + I.
  • Note: there may be a small delay after pressing.