diff --git a/meta-facebook/meta-bletchley/conf/machine/bletchley.conf b/meta-facebook/meta-bletchley/conf/machine/bletchley.conf
index 6b7711a..c7407e8 100644
--- a/meta-facebook/meta-bletchley/conf/machine/bletchley.conf
+++ b/meta-facebook/meta-bletchley/conf/machine/bletchley.conf
@@ -14,5 +14,5 @@
 
 PREFERRED_PROVIDER_virtual/phosphor-led-manager-config-native = "bletchley-led-manager-config-native"
 
-OBMC_HOST_INSTANCES = "0 1 2 3 4 5 "
+OBMC_HOST_INSTANCES = "1 2 3 4 5 6"
 
diff --git a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-ctrl b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-ctrl
index 9607453..302c94b 100755
--- a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-ctrl
+++ b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-ctrl
@@ -41,7 +41,7 @@
 }
 
 function show_usage(){
-    echo "Usage: motor-ctrl [sled0 | sled1 | sled2 | sled3 | sled4 | sled5]  [f r s]"
+    echo "Usage: motor-ctrl [sled1 | sled2 | sled3 | sled4 | sled5 | sled6]  [f r s]"
     echo "      f : Step Motor go forward"
     echo "      r : Step Motor go reverse"
     echo "      s : Step Motor stop "
@@ -52,7 +52,7 @@
     exit 1;
 fi
 
-if [[ "$1" =~ ^(slot[0-5]{1})$ ]] || [[ "$1" =~ ^(sled[0-5]{1})$ ]]; then
+if [[ "$1" =~ ^(sled[1-6]{1})$ ]]; then
     SLED=$1
     SLED_NUM=${SLED:4}
     ACTION=$2
diff --git a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-init b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-init
index 60de76b..89369ac 100755
--- a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-init
+++ b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/motor-init
@@ -8,8 +8,8 @@
 export PATH=$PATH:/usr/libexec
 
 PWM_CLASS_PATH="/sys/class/pwm/pwmchip0"
-#Sleld 0~5 using bmc pwm8~13 as motor driver stick
-PWM_NUM_OFFSET=8
+#Sleld 1~6 using bmc pwm8~13 as motor driver stick
+PWM_NUM_OFFSET=7
 PWM_PERIOD=2500000 #400HZ
 PWM_DUTY=250000    #PWM_PERIOD X 10%
 CALIBRATE_TIMEOUT=120
@@ -97,7 +97,7 @@
     done
 }
 
-if [[ "$1" =~ ^(slot[0-5]{1})$ ]] || [[ "$1" =~ ^(sled[0-5]{1})$ ]]; then
+if [[ "$1" =~ ^(sled[1-6]{1})$ ]]; then
   SLED=$1
   SLED_NUM=${SLED:4}
 else
diff --git a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
index eebe50c..83d65df 100755
--- a/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
+++ b/meta-facebook/meta-bletchley/recipes-bletchley/motor-ctrl/files/power-ctrl
@@ -62,9 +62,9 @@
 function get_bus_num() {
     SLED_NUM=$1
     local bus=0
-
-    if [[ "$SLED_NUM" = [0-5] ]]; then
-        bus="$SLED_NUM"
+    #Mapping Sled number 1~6 to i2c bus number 0~5
+    if [[ "$SLED_NUM" = [1-6] ]]; then
+        bus=$(( SLED_NUM - 1 ))
     fi
     echo "$bus"
 }
@@ -120,7 +120,7 @@
 }
 
 function show_usage(){
-    echo "Usage: power-ctrl [sled0 | sled1 | sled2 | sled3 | sled4 | sled5]  [on off ac-on ac-off status]"
+    echo "Usage: power-ctrl [sled1 | sled2 | sled3 | sled4 | sled5 | sled6]  [on off ac-on ac-off status]"
     echo "       power-ctrl chassis-cycle"
 }
 
@@ -142,7 +142,7 @@
   exit  1;
 fi
 
-if [[ "$1" =~ ^(slot[0-5]{1})$ ]] || [[ "$1" =~ ^(sled[0-5]{1})$ ]]; then
+if [[ "$1" =~ ^(sled[1-6]{1})$ ]]; then
   SLED=$1
   ACTION=$2
   SLED_NUM=${SLED:4}