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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 represents the integer value of the data registers.
      • The notation displays are signed, unsigned, and Hexadecimal.

Change Value Notation​

  1. To change the value notation to signed, unsigned, or 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​

  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​

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

  1. 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.

  1. Connect the PLC to the computer.

  2. Left-click N/D.

  1. 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.