TIP: S7-1500 OPC UA Server Client communication, exporting XML files

Hi,

As from TIA V15.1 / CPU FW 2.6 it is possible to use a S7-1500 controller as OPC UA Client.

The TIA help systems gives the explanations about the instructions and provide program examples (path is Information System – Programming a PLC – Instructions (S7-1200, S7-1500) – Communication (S7-1200, S7-1500), OPC UA (S7-1500)) The sample project is SCL.

Attached I place an example in LAD.

Main Steps:

On server side:

CPU Properties:

1. OPC UA / Server / General: check Activate OPC UA Server
2. Runtimet Licenses / OPC UA: set a license for Type of  purchased licenses

PLC Tags / Program blocks:

1. Create your tags as usual.

CPU Properties:

1. OPC UA / Server / Export: click on Export OPC UA XML file

On Client side:

OPC UA communication / Client interfaces:

1. add new Client interface

There:

on left side:

1. Data Access read list: add new read list (and / or add  write list)

On Read list properties:

1. Connection parameter – server column – address: set the server IP address

on right side:

1. import interface (import server exported xml file)
2. drag and drop the related variables from right to left side

Program blocks:

1. Call OPC_UA_Connect, (to build a connection client – server): click on tool box button (start configuration), Client interface: select the created Cliente interface
2. Call OPC_UA_NamespaceGetIndexList (to read the tag list from the server): Click on tool box button start configuration), Client interface: select the created Cliente interface
3. Call OPC_UA_NodeGetHandleList (to “log” the interest variable on the server): Click on tool box button start configuration), Client interface: select the created Cliente interface; Data access: select the read list.
4. Call OPC_UA_ReadList, (to read the interest variable on the server): Click on tool box button start configuration), Client interface: select the created Cliente interface; Data access: select the read list.

Operation:

1. Pulse on OPC_UA_Connect REQ input.
2. Wait for done status
3. Pulse on OPC_UA_NamespaceGetIndexList REQ input.
4. Wait for done status
5. Pulse on OPC_UA_NodeGetHandleList REQ input.
6. Wait for done status
7. Ciclic pulses on OPC_UA_ReadList REQ

See the data on Cliente interface x data DB

Notes:

You could use OPC UA ConnectionGetStatus to check the connection Status, and blocks from Clear section lib group blocks to clear the section.

For use of the new (V17 or later) instructions, see the tip "Simple sample: OPC_UA_ReadList_C and OPC_UA_WriteList_C for OPC UA client communication" at  https://support.industry.siemens.com/tf//br/en/posts/simple-sample-opc-ua-readlist-c-and-opc-ua-writelist-c-for-opc-ua-client-communication/262165/?page=0&pageSize=10 

Hi,

here there is an program example that manages the communication blocks to a continuous reading (rebuild new connection after a communication break down ).

That status code is often used by Siemens to indicate a connection related problem.  Let's say you are trying to connect over UDP using a TCP only protocol.  Requesting to connect via UDP when UDP is not possible might generate an 80B7 status / error code.

That is simply an example to help convey that I have no specifics other than to suggest where to look.

Beyond that, submit a request to Siemens support which is easy in the online forums over there ---->

minhkhanh

Dear all experts,

I have recently tested your sample project with OPC UA Server running on simulated PLC S7-1500 (using PLC SIMAdvanced), but it fails with 80B7_0000 error code. I have no information about this error. Please help me!

Hi,

Here there is an exemple reading and writing data. I interconnected done's and req's IO so that it now just a question to set "connect" to true to start the communication.

Thanks to Markus Schulz and Jose Manuel Jimenez Curado for the help