diff --git a/fhem/webfrontend/pgm2/em.gplot b/fhem/webfrontend/pgm2/em.gplot
index c22c8493f..4999ea1c6 100644
--- a/fhem/webfrontend/pgm2/em.gplot
+++ b/fhem/webfrontend/pgm2/em.gplot
@@ -4,16 +4,15 @@
 
 
 #=================
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
 set xlabel " "
 
 set ytics nomirror
-set y2tics
 set title '<TL>'
 set grid
-set ylabel "KW"
+#set ytics .2
 
-plot "<IN>" using 1:4 title 'Power' with lines
+plot "<IN>" using 1:4 title 'Power (KW)' with lines
diff --git a/fhem/webfrontend/pgm2/fht.gplot b/fhem/webfrontend/pgm2/fht.gplot
index 5ce1b2eb9..cb2883701 100644
--- a/fhem/webfrontend/pgm2/fht.gplot
+++ b/fhem/webfrontend/pgm2/fht.gplot
@@ -3,13 +3,14 @@
 # FileLog definition: 
 #   define FileLog fhtlog1 fht1:.*(temp|actuator).* /var/log/fht1-%Y-%U.log 
 #
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
 set xlabel " "
 set ytics nomirror
 set y2tics
+set ytics 1
 set title '<TL>'
 set grid
 
diff --git a/fhem/webfrontend/pgm2/fs20.gplot b/fhem/webfrontend/pgm2/fs20.gplot
index 8f115ca9c..ab9bae14c 100644
--- a/fhem/webfrontend/pgm2/fs20.gplot
+++ b/fhem/webfrontend/pgm2/fs20.gplot
@@ -3,15 +3,14 @@
 # FileLog definition:
 #  define FileLog fs20log fs20dev /var/log/fs20dev-%Y-%U.log 
 #
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
 set xlabel " "
-set ytics nomirror
 set title '<TL>'
-set grid
-set yrange [-0.2:1.2]
+set noytics
+set yrange [-0.1:1.1]
 
 plot "< awk '{print $1, $3==\"on\"? 1 : 0; }' <IN>"\
         using 1:2 title 'On/Off' with steps
diff --git a/fhem/webfrontend/pgm2/ks300_1.gplot b/fhem/webfrontend/pgm2/ks300_1.gplot
index 2d454e2d0..2d7b370d2 100644
--- a/fhem/webfrontend/pgm2/ks300_1.gplot
+++ b/fhem/webfrontend/pgm2/ks300_1.gplot
@@ -3,7 +3,7 @@
 # FileLog definition:
 #  define FileLog ks300log ks300:.*H:.* /var/log/ks300-%Y-%U.log 
 #
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
diff --git a/fhem/webfrontend/pgm2/ks300_2.gplot b/fhem/webfrontend/pgm2/ks300_2.gplot
index 35403392b..b93bf3402 100644
--- a/fhem/webfrontend/pgm2/ks300_2.gplot
+++ b/fhem/webfrontend/pgm2/ks300_2.gplot
@@ -3,7 +3,7 @@
 # FileLog definition:
 #  define FileLog ks300log ks300:.*H:.* /var/log/ks300-%Y-%U.log 
 #
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
diff --git a/fhem/webfrontend/pgm2/ks300_3.gplot b/fhem/webfrontend/pgm2/ks300_3.gplot
index b09e2a2f7..9033d763a 100644
--- a/fhem/webfrontend/pgm2/ks300_3.gplot
+++ b/fhem/webfrontend/pgm2/ks300_3.gplot
@@ -3,7 +3,7 @@
 # FileLog definition:
 #  define FileLog ks300log ks300:.*H:.* /var/log/ks300-%Y-%U.log 
 #
-set terminal png size 1024,240 crop
+set terminal png size 800,200 crop
 set output '<OUT>.png'
 set xdata time
 set timefmt "%Y-%m-%d_%H:%M:%S"
diff --git a/fhem/webfrontend/pgm2/mpiri.gplot b/fhem/webfrontend/pgm2/mpiri.gplot
new file mode 100644
index 000000000..fc80b3a42
--- /dev/null
+++ b/fhem/webfrontend/pgm2/mpiri.gplot
@@ -0,0 +1,20 @@
+#
+# Display a piri log with multiple units logging into the same file
+# define pirilog FileLog /var/log/piri-%Y-%m-%d.log piri.*
+# The devices are called piri.sz, piri.flo, piri.flu, prir.wz1 and piri.wz2
+#
+set terminal png size 800,200 crop
+set output '<OUT>.png'
+set xdata time
+set timefmt "%Y-%m-%d_%H:%M:%S"
+set xlabel " "
+set title '<TL>'
+set noytics
+set yrange [-0.1:1.1]
+
+plot\
+  "< awk '/sz/ {print $1, 0.8; }' <IN>" using 1:2 title 'sz'  with points,\
+  "< awk '/flo/{print $1, 0.6; }' <IN>" using 1:2 title 'flo' with points,\
+  "< awk '/flu/{print $1, 0.4; }' <IN>" using 1:2 title 'flu' with points,\
+  "< awk '/wz1/{print $1, 0.2; }' <IN>" using 1:2 title 'wz1' with points,\
+  "< awk '/wz2/{print $1, 0.0; }' <IN>" using 1:2 title 'wz2' with points
diff --git a/fhem/webfrontend/pgm2/piri.gplot b/fhem/webfrontend/pgm2/piri.gplot
new file mode 100644
index 000000000..bd67aa63e
--- /dev/null
+++ b/fhem/webfrontend/pgm2/piri.gplot
@@ -0,0 +1,17 @@
+#
+# Display the on and off values off an FS20 device
+# FileLog definition:
+#  define FileLog fs20log fs20dev /var/log/fs20dev-%Y-%U.log 
+#
+set terminal png size 800,200 crop
+set output '<OUT>.png'
+set xdata time
+set timefmt "%Y-%m-%d_%H:%M:%S"
+set xlabel " "
+set ytics nomirror
+set title '<TL>'
+set grid
+set yrange [-0.2:1.2]
+
+plot "< awk '{print $1, $3==\"on\"? 1 : 0; }' <IN>"\
+        using 1:2 title 'On/Off' with impulses