You only need to set the Mapping property to 'Modbus' if either of the following apply:

• The SCADAPack x70 device with which this Analog, Digital, or Counter Configuration item is associated is operating as a Modbus RTU Client. Additionally, the input or output that this Analog, Digital, or Counter Configuration item represents is on a Modbus Server Device from which the SCADAPack x70 device requests data.
• The SCADAPack x70 device with which this Analog, Digital, or Counter Configuration item is associated is operating as a Modbus IP Clients. Additionally, the input or output that this Analog, Digital, or Counter Configuration item represents is on a Modbus /TCP Server from which the SCADAPack x70 device requests data.

With either of the above scenarios, you need to set the Mapping property to ‘Modbus’, whereupon the following properties are displayed. Configure the properties as required:

• Modbus Point Scanner—Specify the SCADAPack x70 Modbus Point Scanner item that is being used to map to the point on the Modbus RTU Server or Modbus/TCP Server. Use the browse button to display a Reference browse window and then select the required entry from the window.
• Modbus Register—Specify the Modbus Register address at which the point is located in the Modbus RTU Server or Modbus/TCP Server. The address has to be within the range that is available to the SCADAPack x70 Modbus Point Scanner item specified in the field above.
• Bit Offset—This field is enabled only if the SCADAPack x70 Digital Configuration item is associated with a Modbus Point Scanner that has its Modbus Data Type field set to UINT (Digital). Use the spin box to specify the bit of the Modbus RTU Server or Modbus/TCP Server register to which the object is mapped. You can set the bit value between 1 and 16 inclusive. The default value is 1 and it is the least significant bit in the Modbus register, while 16 is the most significant bit in the Modbus register.

You only need to set the Mapping property to ‘DNP3’ if the following applies:

• The SCADAPack x70 device with which this Analog, Digital, or Counter Configuration item is associated is operating as a DNP3 Controlling Station. Additionally, the input or output that the Analog, Digital, or Counter Configuration item represents is on a DNP3 Outstation from which the SCADAPack x70 device requests events. (A DNP3 Outstation can be another SCADAPack x70 device, or a different type of device, such as a remote terminal unit (RTU), a programmable logic controller (PLC), or a smart device with DNP3 protocol capability.)

With the above scenario, you need to set the Mapping property to ‘DNP3’, whereupon the following properties are displayed. Configure the properties as required:

• DNP3 Remote Device—Specify the SCADAPack x70 DNP3 Remote Device item that is being used to map to the point on the DNP3 Outstation. Use the browse button to display a Reference browse window and then select the required entry from the window.
• DNP3 Point Number—Specify the DNP3 Point Number that is assigned to the point on the DNP3 Outstation.
• Direction—Use the combo box to specify whether the point on the Remote device is an Input or Output. With a Counter Configuration item, the direction is set to 'Input'.

You only need to set the Mapping property to 'System Data' on a SCADAPack x70 Analog or Digital Configuration item that is being used to monitor or control system data on a SCADAPack x70 device. When you do so, the following properties are displayed:

• System Data Reference—Enter the name of the item of system data that this particular Analog or Digital Configuration item is to reference in the SCADAPack x70 device. The entry should match the name of the item of system data exactly. Refer to the documentation provided with the SCADAPack x70 device for information about the items of system data that are supported by the device.

  The entry must begin with the SYS_ prefix and can be a maximum of 32 characters long. It can contain a mixture of alphanumeric and underscore characters, but cannot contain any spaces.

  There is no automatic checking mechanism to confirm whether the entry in the System Data Reference field does match the name of an item of system data in the SCADAPack x70 device. As such, care should be taken to manually check that the string entered in the field is correct.