diff --git a/ch.psi.fda.xscan/pom.xml b/ch.psi.fda.xscan/pom.xml
index 8fa2f15..5babbff 100644
--- a/ch.psi.fda.xscan/pom.xml
+++ b/ch.psi.fda.xscan/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>ch.psi.fda</groupId>
 	<artifactId>ch.psi.fda.xscan</artifactId>
-	<version>2.4.0_zmq</version>
+	<version>2.4.1_zmq</version>
 
 	<dependencies>
 
diff --git a/ch.psi.fda.xscan/src/main/java/ch/psi/fda/aq/Acquisition.java b/ch.psi.fda.xscan/src/main/java/ch/psi/fda/aq/Acquisition.java
index 69eb888..f3e3660 100644
--- a/ch.psi.fda.xscan/src/main/java/ch/psi/fda/aq/Acquisition.java
+++ b/ch.psi.fda.xscan/src/main/java/ch/psi/fda/aq/Acquisition.java
@@ -1080,7 +1080,7 @@ public class Acquisition {
 			
 			if(hcrOnly){
 				// There are no additional channels to be read out while taking data via hcrlogic
-				// Therefor we just register the hcr loop as action loop
+				// Therefore we just register the hcr loop as action loop
 
 				aLoop = actionLoop;
 			}
diff --git a/ch.psi.fda.xscan/src/main/java/ch/psi/fda/core/loops/cr/CrlogicLoopStream.java b/ch.psi.fda.xscan/src/main/java/ch/psi/fda/core/loops/cr/CrlogicLoopStream.java
index 5ee5e5b..5949b0b 100644
--- a/ch.psi.fda.xscan/src/main/java/ch/psi/fda/core/loops/cr/CrlogicLoopStream.java
+++ b/ch.psi.fda.xscan/src/main/java/ch/psi/fda/core/loops/cr/CrlogicLoopStream.java
@@ -66,7 +66,7 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 	 */
 	private boolean dataGroup = false;
 	
-	private boolean keepTmpFiles = false;
+//	private boolean keepTmpFiles = false;
 	
 	private volatile boolean stopReadoutThread = false;
 	private Thread readoutThread;
@@ -157,7 +157,7 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 	 * @param inreader
 	 * @throws IOException
 	 */
-	private void receive() {
+	public void receive() {
 		
 		MainHeader mainHeader;
 		
@@ -166,13 +166,18 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 		} catch (IOException e) {
 			throw new RuntimeException("Unable to decode main header", e);
 		}
+		if(!socket.hasReceiveMore()){
+			throw new RuntimeException("There is no data submessage");
+		}
+		
+		byte[] bytes = socket.recv();
+		ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
 		
 		DataMessage message = new DataMessage(metadata);
 		boolean use = true;
 		
-		for(int i=0; i<mainHeader.getElements() && socket.hasReceiveMore(); i++){
-			byte[] bytes = socket.recv();
-			Double raw = ByteBuffer.wrap(bytes).getDouble();
+		for(int i=0; i<mainHeader.getElements(); i++){
+			Double raw = byteBuffer.getDouble();
 			Double val;
 			
 			if(i==0){
@@ -199,8 +204,9 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 			
 			message.getData().add(val);
 		}
+		
 		// Drain remaining messages
-		int n = drain();
+		int n = drainHangingSubmessages();
 		if(n>1){
 			throw new RuntimeException("More than 1 message drained from stream: "+n);
 		}
@@ -209,99 +215,6 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 			eventbus.post(message);
 		}
 		
-		
-		
-//		BufferedReader in = new BufferedReader(inreader);
-//		String line;
-//		boolean firstline = true;
-//		int linecount=0;
-////		int mcounter=0;
-//		
-////			boolean wasInRangeBefore = false;
-//		boolean discardAnyway = false;
-//		
-//		while (true) {
-//			line = in.readLine();
-//			linecount++;
-//			if (line == null) {
-//				break;
-//			} else {
-//				// if(line.matches("^\\[.*")){
-//				if (line.matches("^ *#.*")) {
-//					// Skip header/comment lines
-////						logger.info("HEADER: " + line);
-//				} else {
-//					if (firstline) {
-//						firstline = false;
-//						continue;
-//					}
-//
-////						logger.info(line);
-//
-//					// Write into queue
-//					DataMessage message = new DataMessage(metadata);
-//					String[] tokens = line.split("\t");
-//					boolean use = true;
-//					
-//					for(int i=0;i<tokens.length;i++){
-//						String t = tokens[i];
-//						Double val;
-//						
-//						if(i==0){
-//							Double raw = new Double(t);
-//							
-//							if(useEncoder){
-//								val = crlogicDataFilter.calculatePositionMotorUseEncoder(raw);
-//							}
-//							else if(useReadback){
-//								val = crlogicDataFilter.calculatePositionMotorUseReadback(raw);
-//							}
-//							else{
-//								val = crlogicDataFilter.calculatePositionMotor(raw);
-//							}
-//							
-//							// Check whether data is within the configured range - otherwise drop data
-//							use = crlogicDataFilter.filter(val);
-////								if(!use){
-////									break;
-////								}
-//						}
-//						else if(scalerIndices.containsKey(i)){
-//							CrlogicDeltaDataFilter f = scalerIndices.get(i); 
-//							val = f.delta(new Double(t));
-//						}
-//						else{
-//							val = new Double(t);
-//						}
-//						
-//						
-//						message.getData().add(val);
-//					}
-//					
-//					// Does not work if zigzag, ... 
-////						// Use this to filter out motor retry movements at the end of the scan
-////						wasInRangeBefore = wasInRangeBefore | use;
-////						if(!use && wasInRangeBefore){
-////							discardAnyway=true;
-////							// Optimization - terminate read loop once range is left
-////							logger.info("Terminate read loop because point is outside range");
-////							break;
-////						}
-//					
-//					// Filter data
-//					if(use && !discardAnyway){
-//						eventbus.post(message);
-//						mcounter++;
-//					}
-//					
-//					
-//				}
-//			}
-//		}
-//		in.close();
-//		inreader.close();
-		
-//		logger.info("Lines read: "+linecount+" Messages generated (after filtering): "+mcounter);
 	}
 	
 	
@@ -327,14 +240,6 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 				executionThread = Thread.currentThread();
 			}
 			
-			
-			// TODO each actuator will result in an additional sensor (at the beginning)
-			// Dependent on actuator settings (readback use encoder, ...)
-			
-			
-			// TODO filename generation?
-//			final String tmpFileName = "tmp-"+System.currentTimeMillis()+".txt";
-			
 			Long timeout = 600000l; // 10 minutes move timeout
 			
 			// Check if logic is inactive, otherwise return early
@@ -358,7 +263,6 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 				}
 			}
 			
-			
 			logger.info("Set parameters");
 			template.getNfsServer().setValue("");
 			template.getNfsShare().setValue("");
@@ -544,9 +448,7 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 				motortemplate.getVelocity().setValue(backupSpeed);
 				motortemplate.getBacklashDistance().setValue(backupBacklash);
 			}
-			
-			// Request read of data file
-//			readQueue.put(tmpFileName);
+
 			
 			if(zigZag){
 				// reverse start/end
@@ -590,7 +492,8 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 			metadata.add(new Metadata(s.getId()));
 		}
 		
-		
+		// Clear interrupted state
+		Thread.interrupted();
 		stopReadoutThread = false;
 		// Start readout Thread
 		readoutThread = new Thread(new Runnable() {
@@ -600,21 +503,6 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 				connect(ioc);
 				while(!stopReadoutThread){
 					receive();
-//					String file;
-//					try {
-////						file = readQueue.take();
-//					} catch (InterruptedException e) {
-//						break;
-//					}
-					// TODO Read file and 
-//					try {
-//						collectData(smbShare, file);
-//					} catch (InterruptedException e) {
-//						throw new RuntimeException("Unable to read CRLOGIC raw data file",e);
-//					} catch (IOException e) {
-//						throw new RuntimeException("Unable to read CRLOGIC raw data file",e);
-//					}
-					
 				}
 				close();
 				
@@ -742,6 +630,9 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 	}
 
 	public void connect(String address) {
+		// Clear interrupted state
+		Thread.interrupted();
+		
 		logger.info("Connecting with IOC"+address);
 		context = ZMQ.context(1);
 		socket = context.socket(ZMQ.PULL);
@@ -750,6 +641,9 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 	}
 
 	public void close() {
+		// Interrupt the readout thread to release the read block
+		readoutThread.interrupt();
+		
 		logger.info("Closing stream from IOC "+ioc);
 		socket.close();
 		context.close();
@@ -757,7 +651,7 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 		context = null;
 	}
 	
-	private int drain() {
+	private int drainHangingSubmessages() {
 		int count = 0;
 		while (socket.hasReceiveMore()) {
 			// is there a way to avoid copying data to user space here?
@@ -808,11 +702,10 @@ public class CrlogicLoopStream extends CrlogicLoop implements ActionLoop {
 	}
 	
 	public boolean isKeepTmpFiles() {
-		return keepTmpFiles;
+		return false;
 	}
 
 	public void setKeepTmpFiles(boolean keepTmpFiles) {
-		this.keepTmpFiles = keepTmpFiles;
 	}
 	
 	public EventBus getEventBus(){
diff --git a/ch.psi.fda.xscan/src/test/java/ch/psi/fda/core/loops/cr/CrlogicLoopStreamTest.java b/ch.psi.fda.xscan/src/test/java/ch/psi/fda/core/loops/cr/CrlogicLoopStreamTest.java
index 2d6ea3d..448c433 100644
--- a/ch.psi.fda.xscan/src/test/java/ch/psi/fda/core/loops/cr/CrlogicLoopStreamTest.java
+++ b/ch.psi.fda.xscan/src/test/java/ch/psi/fda/core/loops/cr/CrlogicLoopStreamTest.java
@@ -95,4 +95,15 @@ public class CrlogicLoopStreamTest {
 		cservice.destroy();
 	}
 
+	@Test
+	public void testReceive(){
+		ChannelService cservice = new DefaultChannelService();
+		CrlogicLoopStream crlogic = new CrlogicLoopStream(cservice, "X05LA-ES2-CRL", "localhost", false);
+		crlogic.connect("localhost");
+		
+		crlogic.receive();
+		
+		crlogic.close();
+	}
+	
 }