diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..d1d1918
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "external/epics"]
+	path = external/epics
+	url = https://github.com/MatthewJCameron/epics
diff --git a/external/epics b/external/epics
new file mode 160000
index 0000000..04e6674
--- /dev/null
+++ b/external/epics
@@ -0,0 +1 @@
+Subproject commit 04e66747eea2eed5e4f12fc81266b38e071c7521
diff --git a/main.py b/main.py
index cea239a..23f7965 100755
--- a/main.py
+++ b/main.py
@@ -1,12 +1,15 @@
+# Core imports.
+import os
+import sys
+from functools import partial
+SIMULATE=False
+if SIMULATE:
+	sys.path.insert(1,"external") #gives path to fake epics so it loads before real epics
 # Internal imports.
 from resources import config, ui
 import systems
 import QsWidgets
 from systems.imageGuidance import nonOrthogonalImaging
-# Core imports.
-import os
-import sys
-from functools import partial
 # Sitepackages imports.
 import numpy as np
 from PyQt5.QtCore import pyqtSlot as Slot
@@ -32,7 +35,6 @@
 	datefmt='%H:%M:%S',
 	level=logging.INFO
 	)
-
 """
 MAIN CLASS: Application starts here.
 """
diff --git a/systems/control/backend/epics/controls.py b/systems/control/backend/epics/controls.py
index 330d120..dfab621 100644
--- a/systems/control/backend/epics/controls.py
+++ b/systems/control/backend/epics/controls.py
@@ -118,7 +118,7 @@ def writeValue(self,attribute,value):
 			if attribute == 'TWV':
 				self.pv[attribute].put(value)
 			else:
-				while self.pv['DMOV'] == 0:
+				while self.pv['DMOV'].get() == 0:
 					pass
 				self.pv[attribute].put(value)
 
@@ -141,7 +141,7 @@ def write(self,value,mode='absolute'):
 				if self.checkAbsLimit(value):
 					self.pv['VAL'].put(float(value))
 				else:
-					logging.error("Cannot move {} to {} - motorlimit will be reached.\nH.Lim:{}\tL.Lim:{}".format(self.pv['DESC'],value,self.pv['HLM'],self.pv['LLM']))
+					logging.error("Cannot move {} to {} - motorlimit will be reached.\nH.Lim:{}\tL.Lim:{}".format(self.pv['DESC'].get(),value,self.pv['HLM'].get(),self.pv['LLM'].get()))
 					return
 		elif mode=='relative':
 			if self.pv['TWV']:
@@ -159,7 +159,7 @@ def write(self,value,mode='absolute'):
 						# Do nothing.
 						pass
 				else: 
-					logging.error("Cannot move {} by {} - motorlimit will be reached.\nH.Lim:{}\tL.Lim:{}".format(self.pv['DESC'],value,self.pv['HLM'],self.pv['LLM']))
+					logging.error("Cannot move {} by {} - motorlimit will be reached.\nH.Lim:{}\tL.Lim:{}".format(self.pv['DESC'].get(),value,self.pv['HLM'].get(),self.pv['LLM'].get()))
 					return
 		# Give epics 100ms to get the command to the motor.
 		time.sleep(0.2)
@@ -173,7 +173,7 @@ def write(self,value,mode='absolute'):
 		maxRetrties = 3
 		BDST=self.pv['BDST'].get()
 		while (abs(newPosition-predictedPosition)>BDST) and (retryCounter<maxRetrties): 
-			logging.error("Motor {} did not move to {}. Retry #{} of {}.".format(self.pv['DESC'],predictedPosition,retryCounter+1,maxRetrties))
+			logging.error("Motor {} did not move to {}. Retry #{} of {}.".format(self.pv['DESC'].get(),predictedPosition,retryCounter+1,maxRetrties))
 			self.pv['VAL'].put(predictedPosition)
 			time.sleep(0.2)
 			while self.pv['DMOV'].get() == 0:
@@ -186,14 +186,14 @@ def write(self,value,mode='absolute'):
 
 	def checkAbsLimit(self,value):
 		stillInLimitBool=False
-		if float(value)<=float(self.pv['HLM']) and float(value)>=float(self.pv['LLM']):
+		if float(value)<=float(self.pv['HLM'].get()) and float(value)>=float(self.pv['LLM'].get()):
 			stillInLimitBool=True
 		return stillInLimitBool
 
 	def checkRelLimit(self,value):
 		stillInLimitBool=False
-		if (float(value)+float(self.pv['RBV']))>=float(self.pv['LLM']) \
-			and (float(value)+float(self.pv['RBV']))<=float(self.pv['HLM']) :
+		if (float(value)+float(self.pv['RBV'].get()))>=float(self.pv['LLM'].get()) \
+			and (float(value)+float(self.pv['RBV'].get()))<=float(self.pv['HLM'].get()) :
 				stillInLimitBool=True
 		return stillInLimitBool