public override void StartService()
{
if (_posModel == null)
{
return;
}
if (_posModel.IsStart)
{
if (!OPCServerInstance.IsRunning)
{
OPCServerInstance.Initialize(_posModel.ServerName, _posModel.License);
OnServiceLog("启动OPC服务成功");
}
}
}
public override void TagValueSubscriber(TagValuePublishedArgs args)
{
if (_posModel == null || !_posModel.IsStart)
{
return;
}
if (!OPCServerInstance.IsRunning)
{
OnServiceLog("OPC Server 没有启动");
return;
}
if (TagConfigs.FirstOrDefault(t => t.TagName == args.TagName) != null)
{
string key = args.TagName;
object val = args.NewValue;
if (!_cache.ContainsKey(key))
{
_cache.TryAdd(key, val);
OPCServerInstance.UpdateTag(key, val);
}
else
{
object oldValue;
if (_cache.TryGetValue(key, out oldValue))
{
if (val != oldValue)
{
_cache.TryUpdate(key, val, oldValue);
OPCServerInstance.UpdateTag(key, val);
}
}
}
}
}
