Differences

This shows you the differences between two versions of the page.

--- sdk:scripts:opcua-read [2015/07/07 06:55] – created moll
+++ sdk:scripts:opcua-read [2022/09/05 12:10] (current) – schmitt
@@ Line 1: / Line 1: @@
 ====== SDK Script opcua-read.are ======
 <code c opcua-read.are>
-/* DESC: This script will read the Value from a Node at a OPC-UA-Server.
+/* DESC: This script will read the node value at a OPC-UA server.
- * Copyright (C) 2012 NetModule AG
+ * Copyright (C) 2015 NetModule AG, Switzerland
  */
-void usage () {
+void usage ()
-    printf("usage: opcua-read.are <opcuaserver> <nodeIndex> <nodeId>\n");
+{
+    printf("usage: opcua-read.are <server> <port> <node-index> <node-id>\n");
     exit(1);
 }
@@ Line 14: / Line 15: @@
 }
-opcuaserver = argv[1];
+server = argv[1];               /* hostname or address */
-nodeIndex = (int) argv[2];
+port = (int) argv[2];           /* TCP port */
-nodeId = (int) argv[3];
+nindex = (int) argv[3];         /* node index (e.g. 0) */
+nid = (int) argv[4];            /* node id (e.g. 85 = root) */
-client_0 = nb_opcua_connect(opcuaserver);
+url = sprintf("opc.tcp://%s:%d", server, port);
-if(client_0 >= 0) {
-	ret = nb_opcua_read(client_0, nodeIndex, nodeId);
+client = nb_opcua_connect(url);
-	if(ret < 0) {
+if (client < 0) {
-		printf("could not read value of Node Index: %d, Id: %d \n",nodeIndex, nodeId);
+    printf("unable to connect to %s", url);
-	} else {
+    exit(0);
-		printf("succesfully connected and read the value from %d\n", ret);
+}
-	}
-	nb_opcua_disconnect(client_0);
+value = nb_opcua_read(client, nindex, nid);
+if (is_void(value)) {
+    printf("unable to read value of node %d:%d", nindex, nid);
 } else {
-	printf("could not connect to server %s\n", opcuaserver);
+    dump(value);
 }
+nb_opcua_disconnect(client);
 exit(0);

User Tools

Site Tools

Differences

Page Tools