Is there a way to know if the machine respond or not? Even the connection is okay?

See more:

C#

Arduino

Raspberry-Pi

Hi, I'll make this short as possible..

I'm trying to communicate with boom barrier machine the connection is okay but in physically the barrier does not lift up this happens sometimes is there a way for me to know if the machine work or not? i only pass an IP address and a port to make it work..
btw I'm using c#..

try
           {
               zkemkeeper.CZKEM zk = new zkemkeeper.CZKEM();
               bool connected = false;
               int PortNo = 4370;
               connected = zk.Connect_Net(globalVariables.boomGateIP, PortNo);
               if (connected)
               {
                   if (zk.ACUnlock(1, 100))
                   {
                       GatesRepository gateRepository = new GatesRepository();
                       string hostName = Dns.GetHostName();
                       gateRepository.OpenBoom(globalVariables.Username,  Settings.Default.BoothId, "", "", getIP.getHostName(), hostName, txtContainernumber.Text);
                   }
                   else
                   {
                       MessageBox.Show("error opening boom gate door.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                   }
                   zk.Disconnect();
               }
               else
               {
                   MessageBox.Show("error connecting with boom gate device. call it", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
               }
           }
           catch (Exception ex)
           {
               MessageBox.Show(ex.Message);
           }

What I have tried:

i tried a for loop but the problem is still there, i'm really out of option guys.. I'm drained..