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OPC DataLogger, an OPC data recorder that can meet various requirements of users, is compatible with OPC DA 2.x Compliant Servers and OPC UA, and can be used in a variety of operating systems and database processing.

With the relative update of OPC UA server functions in Siemens S7-1500 PLC, access to real-time production data is now open to third-party applications. As a result, these applications can now communicate with hardware that was previously locked behind proprietary communication drivers.

OPC Data Logger's OPC UA client interface allows users to quickly and easily connect to the S7-1500 PLC and log data to their preferred data storage options without the need for intermediate applications. This article describes the high-level steps involved in recording data from the S7 # 1500 controller.

The current S7-1500 series PLC has embedded OPC UA servers in the controller, providing a faster and more efficient channel for more reliable and secure communication. In addition, because it is standards-based, it is more compatible with third-party systems that directly support OPC UA to connect directly to the S7-1500 controller.

Compared with the traditional Siemens TCP (RFC1006 ISO over TCP) protocol, the OPC UA interface in S7-1500 has some other advantages:

Higher efficiency

Higher security

Because OPC UA allows reporting of exceptions (RBE), the ability to transfer arrays and larger maximum big data packet sizes, OPC UA is Siemens' preferred method of integrating S7-1500 controllers because these methods can improve efficiency.

Because OPC Data Logger itself supports OPC UA, you can connect directly to the embedded OPC UA server in S7-1500 and start recording your process data.

Step 1: create an OPC data logger UA connection

First, you must configure the connection to the S7-1500 OPC UA server in the OPC data logger (where the data will come from). This involves defining a standard OPC UA data collector in the OPC Data Logger project.

To do this, you also need to access S7-1500 using TIA Portal configuration and programming software to determine which OPC UA server endpoints are available (located in the OPC UA server configuration section of TIA Portal).

Step 2: create OPC data logger log tasks and groups

After you create the Data Collector, you must now also add log tasks and log groups. Logging tasks drive logging for all other components and are objects that link collectors, presentations, stores, and projects.

This group is a collection of items to be recorded; logging tasks can contain one or more logging groups.

Step 3: create an OPC data logger data representation

By selecting the data points that need to be recorded, you must configure the data representation, that is, how the data is actually formatted when recorded to the selected database or file.

Step 4: create the OPC data logger data store

After you create all the other components, you need to add a data storage component. OPC Data Logger supports logging into ODBC compatible databases, SQL and Oracle databases, as well as simple CSV logging.

Step 5: test the connection between Data Logger UA and S7-1500

After you configure, enable, and connect each component, you can save and test the OPC Data Logger project. OPC Data Logger includes a convenient "test run" feature that steps through configuration, makes all necessary connections, and tests your settings to ensure that your data is recorded as needed.

The content of the article is over. I hope it will be helpful to you.

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