Adding a parameter OPC item

  1. Select Configuration > OPC > OPC Items. The OPC Items screen is displayed.
  2. Click Add. The Add window is displayed.
  3. Specify this information on the OPC Item tab:
    OPC Item Type
    The type of OPC item must be set to Parameter.
    Tag Name
    The name of the OPC item.
    Address
    The tag’s address in the OPC server.
    Description
    The description of the OPC item.
    OPC Server
    The OPC server used for reading and writing tags in the from and to fields.
    OPC Group
    The OPC group to which the tag is assigned.
    Machine
    The machine associated with the OPC item.
    Action
    The action to perform when the OPC item value changes. This field can be blank if an action, other than the standard OPC item type action, is not required.
    Offset
    An offset value that is applied to incoming OPC data. The offset value is not applied if this field is set to 0.
    Formula
    An expression that defines how to calculate the OPC item value based on other OPC items. This field is optional and can be blank if necessary.
    Multiplier
    A multiplication factor applied to the OPC item for scaling. The multiplier is not applied if this field is set to 1.
    Head No
    The head number to which the parameter value is assigned. By default, this value is set to 1.
    Variable
    The name of the variable associated with the process parameter.
    Sample No
    The sample number to which the parameter value is assigned. By default, this value is set to 1.
    Position No
    The position number to which the parameter value is assigned. By default, this value is set to 1.
  4. Click OK.