Interactive OPC UA browser example to see nodeIds in labview 2018?

[Andrey_Dmitriev]

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@Asasafuchi wrote:

How does this code work with certification? Do I need to modify the rust scripts so that I can add certification file paths, security policies etc?

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Well, there are two possibilities. One is to add appropriate attributes to the ClientBuilder and pass as parameters to VI (like NI OPC UA does). Another way - to load everything from config file (like I did with Server), then configure security in config file (advantage - you don't need to change LabVIEW code in this case). Anyway I added load Client from config:

but didn't check this with real certificates, may be at weekend.

Regard your previous question about Browser - you can handle OnChange Event, then you will get Tag, and frm this Tag you can get detailed NodeInfo with all attributes.

LabVIEW code looks like this:

Rust code behind:

Spoiler

#[unsafe(no_mangle)]
pub extern "C" fn lv_get_node_info(
	rt_ptr: *mut Runtime,
	session_in: *mut Arc<Session>,
	id_u32: u32,
	id_str: *const i8,
	ns: u16,
	id_type: u32,
	mut lv_str: LStrHandle,
) -> i32 {
	check_runtime!(rt_ptr);

	unsafe {
		let rt = &mut *rt_ptr;
		if !session_in.is_null() {
			let session = &mut *session_in;
			let id: NodeId;
			match id_type {
				1 => id = NodeId::new(0, id_u32).into(), //so works so far
				2 => id = NodeId::new(ns, cstr_to_string!(id_str)).into(),
				_ => return ERR_INVALID_TYPE,
			}

			let r = rt.block_on(async {
				session
					.read(
						&read_value_ids(
							&[
								AttributeId::Value,
								AttributeId::DisplayName,
								AttributeId::BrowseName,
								//AttributeId::NodeClass, //lot of Attributes available
								//AttributeId::NodeId,
								//AttributeId::Historizing,
								//AttributeId::ArrayDimensions,
								//AttributeId::Description,
								//AttributeId::ValueRank,
								//AttributeId::DataType,
								//AttributeId::AccessLevel,
								//AttributeId::UserAccessLevel, //and so on...
							],
							&id,
						),
						TimestampsToReturn::Both,
						0.0,
					)
					.await
					.unwrap()
			});

			let mut i = 0;
			let mut output = String::new();

			while i < r.len() {
				write!(&mut output, "Attribute {}: {:?}\n", i, r[i])
					.expect("Failed to get attribute");
				i = i + 1;
			}
			let len = output.len();
			string_resize(1, 1, &mut lv_str as *mut LStrHandle, len);

			let c_headers = match CString::new(output) {
				Ok(cs) => cs,
				Err(_) => return -1, // failed to convert to C string
			};
			MoveBlockChar(c_headers.as_ptr(), (**lv_str).str.as_mut_ptr(), len);
			(**lv_str).cnt = len as i32;
		}
	}
	return 0;
}

And this is how it works (for this demo I added second variable "MySine" as Double):

Then this output can be parsed and nicely formatted in LabVIEW "like UA Expert".

And yes, namespace 2 is set to default on most terminals.

Unfortunately can't spend much time on it, because busy with other heavy weight projects.

Seems to be Virus Scanner in trouble, I added password opcua2025 to the archive, let see