OSI Agent Advanced

5 min

Review the following information for setting up and configuring the OSI Agent driver.

Important:

The DH Historian Agent can only have one OSI PI agent and one OSI PI server connection with one username/password configured for the OSI PI server.
The username/password in the DeviceHub configuration is to access the DH Historian Agent, not the OSI PI server.
If you would like to manage access to tags/data being sent through the OSI PI agent and server, you can set up multiple Manufacturing Connect Edge connections through the NATS connector. See Set Up Edge Cascading with the NATS Connector to learn more.

Set Up the OSI Agent

See Set Up the OSI Agent to review how to set up and configure the OSI Agent driver.

OSI Agent Advanced Driver Settings in Manufacturing Connect Edge

If you review or edit the settings of the OSI Agent Advanced device, refer to the following parameters.

Parameter	Value
Type	OSI
Driver	OSI Agent Advanced
Network Port	The port configured in the DH Historian Agent. The default value is 4777.
Interface	You have the option of selecting the interface for accepting client connections. The default value is 0.0.0.0, which means using all network interfaces for accepting connections from clients.
User	The username configured in the DH Historian Agent.
Password	The password configured in the DH Historian Agent.
Enable TLS	Disable or Enable
Nats Connection Name	The NATS connection name, which should be the same as the Windows-based OSI Agent setting.
Nats Request Timeout (ms)	5000
Browse Request Items Count	500

When you Add Tags to the connected device, refer to the following register table and tag parameters.

Refer to the following additional resources:

Register Table

Name	Value Types
R	float64, bool[], sbyte[], byte[], int32[], sbyte, int16, int64, uint64[], float64[], string, uint16[], float32[], bool, byte, float32, uint64, string[], int16[], uint32[], int64[], uint16, int32, uint32
State	byte, string
Status	JSON

Tag Parameters

Name: Select R.

Value Type: Select a value type.

Tag Name: Enter a name for the tag.

Description (Optional): Enter a description for the tag.

Publishing Interval:

Polling Mode: Enter the publishing interval in seconds. Default is 1.

Event Mode: Default is 0.

Tag Formula: Enter a formula for the tag to process the generated data. Two variables are permitted: value (current tag value) and timestamp (current tag UNIX time in milliseconds). The following math functions are available:

sqrt

power: power(x) performs the operation 10^x.

log: log(x) is the natural logarithm (the logarithm is in base e).

exp: exp(x) performs the operation e^x.

Only Publish on Change of Value: Select the checkbox to customize NATS messages to be published only when the value parameter changes from a previous value to a new one. Change of Value only applies to boolean, numeric (such as int or float), and simple string data types. It does not apply to complex types, such as JSON or array. Poll-once topics will not be affected by Change of Value settings. These topics will still only see a single message.

Meta Data: Metadata summarizes basic information about data. This feature allows you to define key-value pair data for the device output payload later on. It can then be used to find, use, and reuse particular instances of data.

Note: If you use special characters in meta data key names, the special characters are replaced with underscore characters in the payload. This can cause two key names to be combined into one. For example, configuring the key names a**b and a&&b will cause only one key name to be created (a__b).