scan parameters freeze during scan, othertwise the scan bar doesnt do the job properly

myWidgets.py

@@ -116,26 +116,30 @@ class anal_control_signal(QWidget):
             self.scan_button.setText('Start scan')
             self.scan_button.setStyleSheet('background-color: None')
             self.PbarTimer.stop()
+            self.sb.setValue(self.scan_step)
             self.sb.setEnabled(True)
-            
+            self.scan_sb_start.setEnabled(True)
+            self.scan_sb_stop.setEnabled(True)
             
             
         else:
             
             dt = 5.0e-3
             
-            first_value = float(self.scan_step)            
+            first_value = float(self.sb.val)            
             self.scan_array = scanFunctions.create_scan_array(self.scan_sb_start.val, self.scan_sb_stop.val, self.scan_sb_period.val, first_value,dt)
             self.scan_array_gen = scanFunctions.yield_scan_array(self.scan_array)
             
             
-            if self.scan_step > float(self.scan_sb_stop.val) or self.scan_step < float(self.scan_sb_start.val):
+            if first_value > float(self.scan_sb_stop.val) or first_value < float(self.scan_sb_start.val):
                 details = 'Remember remember the fifth of November.' + '\n' + 'Also remember that scan starts from the value of the corresponding spin box'
                 show_warning('Scan can not start outside scan range and scan start should be lower than scan stop', details_text= details)
             elif len(self.scan_array) < 5:
                 show_warning('%i steps are too few, you need at least 5 steps' % (len(self.scan_array)) )
             else:
                 self.sb.setEnabled(False)
+                self.scan_sb_start.setEnabled(False)
+                self.scan_sb_stop.setEnabled(False)
                 self.scan_button.setStyleSheet("background-color: green")
                 self.PbarTimer.start(dt*1e3)
                 self.ScanTimer.start(dt*1e3)
@@ -199,10 +203,8 @@ class burleighWM(QWidget):
             wavemeter_ok = False
             try:
                 tn = telnetlib.Telnet(host = "wannanosaurus", port = 1234, timeout = 1)
-                if tn.sock_avail():
                 wavemeter_ok = True
-                else:
-                    show_warning('Wannanosaurus seems connected but WM might be off.')
+
             except:
                 show_warning('Wannanosaurus not connected')