Index: simulator/run.py
===================================================================
diff -u -r313132b681260cc0761c65d46200adb40b72f478 -r967521dff94783ce48b50abc8db6bcd67bb501bf
--- simulator/run.py	(.../run.py)	(revision 313132b681260cc0761c65d46200adb40b72f478)
+++ simulator/run.py	(.../run.py)	(revision 967521dff94783ce48b50abc8db6bcd67bb501bf)
@@ -5,9 +5,8 @@
 import sys
 from dialin.ui import utils
 from PySide2 import QtCore, QtWidgets
-from simulator.loader import Simulator
-from dialin.ui.hd_simulator import HDSimulator
-from dialin.ui.hd_simulator_alarms import HDAlarmsSimulator, HIGH
+from simulator.simulator import Simulator
+from simulator.interface import SimulationInterface
 
 
 def main():
@@ -23,30 +22,16 @@
     simulator = Simulator()
     simulator.show()
 
-    hd_simulator_instance_counter_check()
+    SimulationInterface.hd_instance_counter_check()
+    SimulationInterface.dg_instance_counter_check()
+    SimulationInterface.alarm_instance_counter_check()
 
     utils.tstDone()
 
     # start qt application main loop
     sys.exit(app.exec_())
 
 
-def hd_simulator_instance_counter_check():
-    """
-    Checks to make sure only one instance of the HDSimulator has been created.
-    this code shall be part of the HDSimulator __init__ but other codes are not ready for this.
-    so only the simulator is checking it now.
-    """
-    if HDSimulator.instanceCount > 1:
-        raise Exception("more than one instance of HDSimulator shall not be created.")
-    else:
-        if HDAlarmsSimulator.instanceCount > 1:
-            raise Exception("more than one instance of HDAlarmsSimulator shall not be created.")
-        else:
-            print("HDAlarmsSimulator number of instances is ", HDAlarmsSimulator.instanceCount)
-        print("HDSimulator number of instances is ", HDSimulator.instanceCount)
-
-
 if __name__ == "__main__":
     QtCore.QCoreApplication.setAttribute(QtCore.Qt.AA_ShareOpenGLContexts)
     main()