diff --git a/secop.py b/secop.py
index 1d2489d..91e65de 100644
--- a/secop.py
+++ b/secop.py
@@ -19,17 +19,24 @@ def convert_par(module, name, par):
 
 
 def convert_cmd(module, name, cmd):
-    result = dict(type='input', button=True, name=module+":"+name, title=name)
+    result = dict(type='pushbutton', name=module+":"+name, title=name)
     result['command'] = 'do %s:%s' % (module, name)
     argument = cmd['datainfo'].get('argument')
     if cmd['datainfo'].get('result'):
         result['result'] = True
+    else:
+        if not argument:  # simple command like stop
+            return result
+    result['button'] = not argument
+    # result['type'] = pushbutton will be replaced below
     if argument:
         if argument['type'] == 'enum':
             result['enum_names'] = [dict(title=k, value=v) for k, v in argument['members'].items()]
             result['type'] = 'enum'
         elif argument['type'] == 'bool':
             result['type'] = 'checkbox'
+        else:
+            result['type'] = 'input'
     else:
         result['type'] = 'rdonly'
     if cmd['description']: