diff --git a/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs b/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
index 597e32fb8..495a87a2d 100644
--- a/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
+++ b/TBF/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
@@ -972,13 +972,13 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
             {
                 /// Verify the configuration
                 error = CommErr.Verify;
-                byte[] cfg_0_3 = null;
+                byte[] config = null;
                 for (int j = 0; j < cfg.MaxCommRetries; j++)
                 {
-					if (0 == ReadRequestPort(threadId, ihead, MessageID.Configuration, 0, 4, out cfg_0_3, cfg.CommTimeout))
+                    if (0 == ReadRequestPort(threadId, ihead, MessageID.Configuration, 0, ConfigStruct.Length, out config, cfg.CommTimeout))
                     {
-                        ihead.ConfigStruct.Update(0, cfg_0_3);
-                        if (ihead.ConfigStruct.MeterState == MeterState.Test)
+                        ihead.ConfigStruct = ConfigStruct.FromByteArray(config);
+                        if ((ihead.ConfigStruct.MeterState == MeterState.Test) && (ihead.ConfigStruct.TestModeConfig == testModeConfig))
                         {
                             error = CommErr.None;
                             resultStr = ihead.ConfigStruct.ToString(1);