diff --git a/fhem/FHEM/55_PIFACE.pm b/fhem/FHEM/55_PIFACE.pm
index a86dc2238..da6f7d167 100644
--- a/fhem/FHEM/55_PIFACE.pm
+++ b/fhem/FHEM/55_PIFACE.pm
@@ -56,6 +56,7 @@ sub PIFACE_Initialize($){
   $hash->{AttrFn}	= "PIFACE_Attr";
   $hash->{AttrList}	= $readingFnAttributes .
                           " defaultState:0,1,last,off pollInterval:1,2,3,4,5,6,7,8,9,10,off" .
+                          " disable:0,1 disabledForIntervals" .
                           " portMode0:tri,up" .
                           " portMode1:tri,up" .
                           " portMode2:tri,up" .
@@ -85,6 +86,10 @@ sub PIFACE_Undefine($$){
 sub PIFACE_Set($@) {
 	my ($hash, @a)	= @_;
 	my $name = $hash->{NAME};
+        if (IsDisabled($name)) {
+          Log3 $name, 4, "PIFACE $name set commands disabled.";  
+          return;
+        }
 	my $port = $a[1];
 	my $val  = $a[2];
 	my ($adr, $cmd, $i, $j, $k);	
@@ -504,6 +509,18 @@ PIFACE_Watchdog($) {
             [defaultState] = off is default.<br>
             Restoration of the status of the output port after a Fhem reboot.
           </li>
+          <li><a href="#PIFACE_disable">disable</a> 0|1<br>
+            If applied set commands will not be executed.
+          </li>
+          <li><a href="#PIFACE_disabledForIntervals">disabledForIntervals</a> HH:MM-HH:MM HH:MM-HH-MM...<br>
+            Space separated list of HH:MM tupels. If the current time is between
+            the two time specifications, set commands will not be executed. Instead of
+            HH:MM you can also specify HH or HH:MM:SS. To specify an interval
+            spawning midnight, you have to specify two intervals, e.g.:
+            <ul>
+              23:00-24:00 00:00-01:00
+            </ul>
+          </li>
           <li><a name="PIFACE_pollInterval">pollInterval</a> off|1,2,...,9,10,
             [pollInterval] = off is default.<br>
             Define the polling interval of the input ports in seconds.