diff --git a/PLC_SCL_sources/README.md b/PLC_SCL_sources/README.md
index 0923648..2126edb 100644
--- a/PLC_SCL_sources/README.md
+++ b/PLC_SCL_sources/README.md
@@ -2,13 +2,10 @@
 
 If a different PLC as S7 1500 is used, other software tools have to be used to create and load the programs and to start up the Training Factory Industry 4.0 model.
 
-Depending on the PLC, the source code in this folder can be imported for creating the PLC programs.
+Depending on the PLC, the source code in this folder can be imported for creating the PLC programs (see [Structured Text (ST)](https://en.wikipedia.org/wiki/Structured_text)).
 
-see [Structured Text (ST)](https://en.wikipedia.org/wiki/Structured_text)
-
-## TP
+## TP (fischertechnik configuration)
 ![CPU1512SP-F](../doc/Conf_CPU1512SP-F-1_PN.png "CPU1512SP-F")
 
-## IM
+## IM (old configuration)
 ![CPU1512SP](../doc/Conf_CPU1512SP-1_PN.png "CPU1512SP")
-![CPU1512SP](../doc/CPU1512SP.JPG "CPU1512SP")