Add DS desc

db/core/ecmcDS-idx.template

@@ -71,3 +71,8 @@ record(ai,"$(P)MCU-Cfg-DS${Index}-PrvObjId") {
     field(DESC, "DS number of next DS")
     field(VAL,  "$(PREV_OBJ_ID=-1)")
 }
+
+record(stringin,"$(Name)$(DESC_NAME)") {
+    field(DESC, "DS Info")
+    field(VAL,  "${DESC=PLC ${index}}")
+}

db/core/ecmcDS.substitutions

@@ -1,5 +1,5 @@
 file ecmcDS-idx.template
 {
-  pattern { DS_DATAINDEX_ACT,           DS_DATA_ACT ,             DS_STAT,               DS_TYPE,               DS_STAT_,               DS_FULL,              DS_CLEAR_CMD             }
-          { DS$(Index2Char)-DataIdAct,  DS$(Index2Char)-DataAct,  DS$(Index2Char)-Stat,  DS$(Index2Char)-Type,  DS$(Index2Char)-Stat_,  DS$(Index2Char)-Full, DS$(Index2Char)-ClrCmd }
+  pattern { DS_DATAINDEX_ACT,           DS_DATA_ACT ,             DS_STAT,               DS_TYPE,               DS_STAT_,               DS_FULL,              DS_CLEAR_CMD,           DESC_NAME  }
+          { DS$(Index2Char)-DataIdAct,  DS$(Index2Char)-DataAct,  DS$(Index2Char)-Stat,  DS$(Index2Char)-Type,  DS$(Index2Char)-Stat_,  DS$(Index2Char)-Full, DS$(Index2Char)-ClrCmd, DS$(Index2Char)-Desc }
 }

hugo/content/manual/knowledgebase/_index.md

@@ -8,6 +8,29 @@ chapter = false
 {{% children %}}
 ---
 
+## Overview panel
+For an overview of an ecmc system, the ecmcMain.ui panel is a good starting point.
+The ecmcMain.ui covers most parts of an ecmc system:
+* ecmc_rt thread diagnostics:
+    - Jitter
+    - Cycle time
+* EtherCAT:
+    - Status 
+    - Lost frames
+    - Slave count
+    - master Id
+    - Links to dedicated sub panels for each slave type.
+* Links to all configured objects:
+    - motion expert panels
+    - PLC objects
+    - plugin objects
+    - data storage objects
+
+The ecmcMain.ui is started with the following syntax:
+```
+caqtdm -macro "IOC=<ioc_name>" ecmcMain.ui
+```
+
 ## Knowledge base
 Due to the complexity an EtherCAT bus topology can assume, troubleshooting can be challenging.
 This guide should provide the basic means to diagnose simple errors and is by no means complete!