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--- sdk:scripts:opcua-write [2015/07/07 06:58] – created moll
+++ sdk:scripts:opcua-write [2022/09/05 12:12] (current) – schmitt
@@ Line 2: / Line 2: @@
 <code c opcua-write.are>
-/* DESC: This script will write a new Value to a Node at a OPC-UA-Server.
+/* DESC: This script will write a new value to a node at a OPC-UA server.
- * Copyright (C) 2012 NetModule AG
+ * Copyright (C) 2015 NetModule AG, Switzerland
  */
-void usage () {
+void usage ()
-    printf("usage: opcua-write.are <opcuaserver> <nodeIndex> <nodeId> <newValue>\n");
+{
+    printf("usage: opcua-write.are <server> <port> <node-index> <node-id> <new-value>\n");
     exit(1);
 }
@@ Line 15: / Line 16: @@
 }
-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) */
-newValue = (int) argv[4];
+nid = (int) argv[4];            /* node id (e.g. 85 = root) */
+value = argv[5];                /* new value */
-client_0 = nb_opcua_connect(opcuaserver);
+url = sprintf("opc.tcp://%s:%d", server, port);
-if(client_0 >= 0) {
-	ret = nb_opcua_write(client_0, nodeIndex, nodeId, newValue);
+client = nb_opcua_connect(url);
-	if(ret < 0) {
+if (client < 0) {
-		printf("could not change value of Node Index: %d, Id: %d \n",nodeIndex, nodeId);
+    printf("unable to connect to %s", url);
-	} else {
+    exit(0);
-		printf("succesfully connected and changed to value to %d\n", ret);
+}
-	}
-	nb_opcua_disconnect(client_0);
+ret = nb_opcua_write(client, nindex, nid, value);
+if (ret < 0) {
+    printf("unable to write value of node %d:%d", nindex, nid);
 } else {
-	printf("could not connect to server %s\n", opcuaserver);
+    printf("node %d:%d has been written", nindex, nid);
 }
+nb_opcua_disconnect(client);
 exit(0);
 </code>

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