diff --git a/startup.cmd b/startup.cmd
index 37fb6f6..5f26098 100644
--- a/startup.cmd
+++ b/startup.cmd
@@ -10,10 +10,8 @@
 #-###############################################################################
 #-
 #- Arguments
-#- [mandatory]
-#- PLUGIN_ID         = Plugin instansiation index, must be unique for each call
-#-
 #- [optional]
+#- PLUGIN_ID         = Plugin instansiation index, must be unique for each call defaults to 0
 #- AX                = Axis id, default 1
 #- BUFF_SIZE         = Buffer size, default 1000
 #- DBG               = Debug mode, default 1
@@ -27,6 +25,6 @@
 # Only allow call startup.cmd once. if more objects are needed then use addMotionObj.cmd directlly.
 
 #- add One motion plugin object, only run startup once
-${ECMC_PLG_MOTION_INIT=""}${SCRIPTEXEC} $(ecmc_plugin_motion_DIR)addMotionObj.cmd "PLUGIN_ID=${PLUGIN_ID},AX=${AX=1},BUFF_SIZE=${BUFF_SIZE=1000},DBG=${DBG=1},ENA=${ENA=1},REPORT=${REPORT=1}"
- 
+${ECMC_PLG_MOTION_INIT=""}${SCRIPTEXEC} $(ecmc_plugin_motion_DIR)addMotionObj.cmd "PLUGIN_ID=${PLUGIN_ID=0},AX=${AX=1},BUFF_SIZE=${BUFF_SIZE=1000},DBG=${DBG=1},ENA=${ENA=1},REPORT=${REPORT=1}"
+
 epicsEnvSet("ECMC_PLG_MOTION_INIT" ,"#")