diff --git a/simrunner/data_config.json b/simrunner/data_config.json
index ef75128843d2663b3c2566ec3004a9eb7a786c70..1e6e44559b56d4e1c7b56c0e146c33a6ca59ce7f 100644
--- a/simrunner/data_config.json
+++ b/simrunner/data_config.json
@@ -7,6 +7,7 @@
     "-N": "4"},
   "data_set_2":{
     "--posixDataDir": "protokoll",
+    "-q": "20",
     "-n": "20",
     "-s": "1M",
     "-i": "0.1s",
diff --git a/simrunner/simrunner.py b/simrunner/simrunner.py
index 4e58abea1d7bb829c296aab41ee956e4e73313d0..2ecd09a289ae6771754aca59e84728dd5509a729 100644
--- a/simrunner/simrunner.py
+++ b/simrunner/simrunner.py
@@ -12,8 +12,10 @@ def read_config():
 
 def start_process(program_path, arguments):
     command = [program_path] + arguments
-    process = subprocess.run(command, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
-    return process
+    result = subprocess.run(command, capture_output=True, text=True)
+    output = result.stdout
+    errors = result.stderr
+    return output, errors, result.returncode
 
 
 def set_arguments(data_config):
@@ -38,8 +40,11 @@ def run_sim(e_list, d_path, s_path):
         os.makedirs(relativ_path, mode=0o777, exist_ok=True)
         event[-1] = relativ_path
         arguments = event
-        output = start_process(s_path, arguments)
+        output, errors, return_code = start_process(s_path, arguments)
         print(output)
+        print(errors)
+        if return_code > 0:
+            print(return_code)
 
 
 # --- MAIN ---