Adding data points to Modbus devices or entities - Industrial IoT 5.2.0.0 | BACnet | Modbus | OPC Client | SNMP Manager

To monitor the data points of a Modbus device or entity, you must add them to the device or entity in Security Center.

1. From the Config Tool homepage, open the Plugins task.
2. In the entity browser, select the Industrial IoT role and click on the Devicestab.
3. Select the Modbus device from the Devices list.
4. In the Data points section of the device, click Add a data point ()
   The Add a data point dialog box opens.

   
5. Enter the following information:

   Name

   The name of the data point.

   Modbus object type

   The object type of the data point. This can be a coil, a discrete input, a holding register, or an input register.

   Address

   The address of the data point on the device. You can enter the address in decimal format and then click Hex to convert it to hexadecimal.

   Bit range

   (Only for input register and holding register) Enable this option if you want to extract the data point value from a subset of bits. For more information, see Reading a specific bit range of a Modbus data point.

   Byte swap

   Enable this option if you want to extract the reading order of the bytes inside each register to be in little-endian.

   Value type

   The type of information reported by the input (data point). The types of data and the possible values that can be reported are:

   Boolean

   True or False

   Int16

   -32,768 to 32,767

   UInt16

   0 to 65,535

   Byte

   0 to 255

   Access level

   Indicates whether the selected data point is read-only or read-write. This field is automatically displayed by the plugin role.

   Conversion

   The conversion to be applied to the argument.

   Unit name

   (Optional) The measurement unit of the data point.

   Unit symbol

   (Optional) The symbol representing the measurement unit.

6. Click Add to add another data point or click Add and Close.
   The data point is displayed in the Data points section.
7. (Optional) To duplicate a data point, right-click on the data point and select Duplicate.
8. (Optional) To deactivate a data point, right-click on the data point and select Deactivate.
9. Click Apply.