diff --git a/applications/apertif/commissioning/central_commands_unb2.sh b/applications/apertif/commissioning/central_commands_unb2.sh
new file mode 100644
index 0000000000000000000000000000000000000000..e5456fe139c4d838dd1ac29cab77e2066ce072be
--- /dev/null
+++ b/applications/apertif/commissioning/central_commands_unb2.sh
@@ -0,0 +1,210 @@
+#!/bin/bash
+###############################################################################
+#
+# Copyright (C) 2017
+# ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
+# P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+###############################################################################
+
+
+# Author:
+# . Daniel van der Schuur
+# . Boudewijn Hut
+# . Pieter Donker
+# Purpose:
+# . Run UniBoard2 commands on local correlator LCU to start data streams
+# Usage:
+# . called by main.py
+
+###############################################################################
+# Parse arguments
+###############################################################################
+APP=$1 # apertif, arts_sc1, arts_sc4
+TELS=$2
+UNBS2=$3
+OPTIONS=$4
+POL=$5
+MAC="False"
+
+if [ -z "$6" ]; then
+ echo "MAC argument not supplied"
+elif [ "$6" == "True" ]; then
+ MAC="True"
+fi
+
+echo central_commands.sh: Using MAC : $MAC
+echo central_commands.sh: Application : $APP
+echo central_commands.sh: Telescopes : $TELS
+echo central_commands.sh: UniBoards2 : $UNBS2
+echo central_commands.sh: Options : $OPTIONS
+echo central_commands.sh: Polarisation : $POL
+
+
+FAC_DESIGN=arts_unb2b_sc4_fwd-r19573
+IMAGE=/home/donker/images/${FAC_DESIGN}.rbf
+# Select correct firmware image for this application
+if [[ "$APP" == "apertif-ag" ]] || [[ "$APP" == "apertif-dev" ]]; then
+ IMAGE=/home/hargreaves/arts_unb2b_sc3_single-r19606.rbf
+fi
+
+
+#Extract the RBF file names (without path and extention)
+IMAGE_FILENAME=$(basename "$IMAGE")
+IMAGE_RBFNAME="${IMAGE_FILENAME%.*}"
+
+###############################################################################
+# Destination MAC/IP adresses of output streams
+###############################################################################
+
+# Cluster node 1 used for single UNB testing
+ARTS001_40G_ETH_DST_MAC=14038001611793 #0x0cc47a197411
+#ARTS001_40G_IP_DST_ADDR=3232237569 # 192.168.8.1
+ARTS001_40G_IP_DST_ADDR=3232258049 # 192.168.8.1
+
+# Arrays for addresses of all cluster nodes
+ARTSCLUSTER_40G_ETH_DST_MAC=(14038001611793 14038001611885 14038001611664 14038006166662 14038001611870 \
+ 14038006166622 14038001611665 14038001611669 14038001611661 14038001611666 \
+ 14038001611668 14038001611703 14038001611836 14038006166667 14038006166666 \
+ 14038001611788 14038001611790 14038006166671 14038001611853 14038001611672 \
+ 14038001611690 14038001611800 14038001611657 14038001611794 14038001611659 \
+ 14038006166661 14038001611841 14038006166670 14038001611799 14038001611801 \
+ 14038001611846 14038001611656 14038001611851 14038001611716 14038001611827 \
+ 14038006166745 14038006166683 14038001611688 14038001611674 14038001611804)
+
+ARTSCLUSTER_40G_ETH_DST_IP=(3232258049 3232258050 3232258051 3232258052 3232258053 \
+ 3232258054 3232258055 3232258056 3232258057 3232258058 \
+ 3232258059 3232258060 3232258061 3232258062 3232258063 \
+ 3232258064 3232258065 3232258066 3232258067 3232258068 \
+ 3232258069 3232258070 3232258071 3232258072 3232258073 \
+ 3232258074 3232258075 3232258076 3232258077 3232258078 \
+ 3232258079 3232258080 3232258081 3232258082 3232258083 \
+ 3232258084 3232258085 3232258086 3232258087 3232258088)
+
+if [ "$MAC" == "True" ]; then
+ echo central_commands.sh: Returning environment variables
+ return 0
+fi
+
+###############################################################################
+# Compare required application images against images stored in flash
+###############################################################################
+# Get memory map of current images
+python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 4
+
+# Revert to facory image so we can reflash/load the user firmware
+python $UPE/peripherals/util_wdi.py --unb2 $UNBS2 --pn2 0:3 -n 0
+
+# Wait until the factory images are online
+sleep 14 # It takes at least a second
+
+if [[ "$IMAGE_RBFNAME" != "$FAC_DESIGN" ]]; then
+
+ # Get memory map of factory image
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 4
+
+ # Load all firmware images from flash
+ python $UPE/peripherals/util_epcs.py --unb2 $UNBS2 --pn2 0:3 -n 8 &
+
+ # Wait until the user images are online
+ sleep 14
+
+ # Get memory map of the user images
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 4
+
+ # Print the user firmware image design names
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 2
+fi
+
+# Get number of required images actually running on the FPGAs
+ACT_IMAGE=$(python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 2 | grep -c $IMAGE_RBFNAME)
+echo -n "Image $IMAGE_RBFNAME found running on $ACT_IMAGE processing nodes: "
+
+NOF_UNIBOARDS2=$(echo $UNBS2, | grep -o ',' | wc -l)
+NOF_REQUIRED_MATCHING_IMAGES=$(($NOF_UNIBOARDS2 * 4))
+
+if [ "$OPTIONS" == "noflash" ]; then
+ echo Continuing without processing node reflash due to noflash option
+ FLASH=FALSE
+elif [ "$ACT_IMAGE" == "$NOF_REQUIRED_MATCHING_IMAGES" ]; then
+ echo Continuing without processing node reflash
+ FLASH=FALSE
+else
+ echo Firmware images will be rewritten to flash
+ FLASH=TRUE
+fi
+
+###############################################################################
+# Flash and reload application images if needed
+###############################################################################
+if [ "$FLASH" == "TRUE" ]; then
+ # Revert to facory image so we can reflash/load the user firmware
+ python $UPE/peripherals/util_wdi.py --unb2 $UNBS2 --pn2 0:3 -n 0
+
+ # Wait until the factory images are online
+ sleep 14 # It takes at least a second
+
+ # Get memory map of factory image
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 4
+
+ # Write image to flash if needed
+ python $UPE/peripherals/util_epcs.py --unb2 $UNBS2 --pn2 0:3 -n 4 -s $IMAGE
+
+ # Load the application images
+
+ # Wait until PPS
+ python $UPE/peripherals/util_ppsh.py --unb2 $UNBS2 --bn 0 -n 4
+
+ # Load all dish firmware images from flash
+ python $UPE/peripherals/util_epcs.py --unb2 $UNBS2 --pn2 0:3 -n 8 &
+
+ # Wait until the user images are online
+ sleep 14
+
+ # Get memory map of the user images
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 4
+
+ # Print the user firmware image design names
+ python $UPE/peripherals/util_system_info.py --unb2 $UNBS2 --pn2 0:3 -n 2
+fi
+
+
+###############################################################################
+# Set destination MAC/IP/Ports
+###############################################################################
+UNBS2_LOOP="${UNBS2//,/ }"
+
+stream_string_ip=`echo ${ARTSCLUSTER_40G_ETH_DST_IP[@]}`
+stream_string_ip=${stream_string//[ ]/,}
+
+stream_string_mac=`echo ${ARTSCLUSTER_40G_ETH_DST_MAC[@]}`
+stream_string_mac=${stream_string//[ ]/,}
+
+if [ ${APP:0:8} == "apertif-" ]; then # set output ip/mac if apertif-ag or apertif-dev
+ for UNB in $UNBS2_LOOP
+ do
+ # Send each CB to its own cluster node
+ for NODENO in {0..3}
+ do
+ echo "set output tab demo for $NODEMO"
+ python $SVN/RadioHDL/trunk/applications/arts/designs/arts_unb2b_sc3/tb/python/pi_arts_unb2b_sc3_output_tab.py --unb2 ${UNB} --pn2 ${NODENO} --stream 0:39 -n 1 -r ${stream_string_ip}
+ python $SVN/RadioHDL/trunk/applications/arts/designs/arts_unb2b_sc3/tb/python/pi_arts_unb2b_sc3_output_tab.py --unb2 ${UNB} --pn2 ${NODENO} --stream 0:39 -n 2 -r ${stream_string_mac}
+ done
+ done
+fi
+
+
+
diff --git a/applications/apertif/commissioning/central_status_unb2.sh b/applications/apertif/commissioning/central_status_unb2.sh
new file mode 100755
index 0000000000000000000000000000000000000000..ce100cfec93cd97dd0f2b62059c9301e0f44fa83
--- /dev/null
+++ b/applications/apertif/commissioning/central_status_unb2.sh
@@ -0,0 +1,94 @@
+#!/bin/bash
+###############################################################################
+#
+# Copyright (C) 2017
+# ASTRON (Netherlands Institute for Radio Astronomy) <http://www.astron.nl/>
+# P.O.Box 2, 7990 AA Dwingeloo, The Netherlands
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+###############################################################################
+
+# Author:
+# . Daniel van der Schuur
+# . Pieter Donker
+# Purpose:
+# . Check the status of the central UniBoards2
+# Usage:
+# . Run after central_commands.sh, with the same arguments
+
+APP=$1 # apertif, arts_sc1, arts_sc4
+TELS=$2
+UNBS=$3
+OPTIONS=$4
+POL=$5
+MAC="False"
+
+if [ -z "$6" ]; then
+ echo "MAC argument not supplied"
+elif [ "$6" == "True" ]; then
+ MAC="True"
+fi
+
+echo central_status_unb2.sh: Using MAC : $MAC
+echo central_status_unb2.sh: Application : $APP
+echo central_status_unb2.sh: Telescopes : $TELS
+echo central_status_unb2.sh: UniBoards2 : $UNBS
+echo central_status_unb2.sh: Options : $OPTIONS
+echo central_status_unb2.sh: Polarisation : $POL
+
+NOF_UNIBOARDS=$(echo $UNBS, | grep -o ',' | wc -l)
+
+if [ "$OPTIONS" == "precheck" ]; then
+ ###############################################################################
+ # Pre (command sequence) check
+ ###############################################################################
+ echo "central_status_unb2.sh: Performing pre-check"
+ echo "central_status_unb2.sh: Targeted UniBoards:" $UNBS
+
+ # Replace the commas in the lists with spaces
+ UNBS_NOCOMMAS=${UNBS//,/ }
+
+ for UNB in $UNBS_NOCOMMAS; do
+ timeout 0.2 ping -c 1 10.99.$UNB.1 >/dev/null 2>&1 && UNBS_ONLINE+=$UNB' '
+ done
+
+ if [ -z "$UNBS_ONLINE" ]; then
+ echo central_status_unb2.sh: Error - all passed central UniBoards offline
+ else
+ # Replace the spaces in the lists with commas
+ UNBS_ONLINE=${UNBS_ONLINE// /,}
+ # Remove the last comma character rom the lists
+ UNBS_ONLINE=${UNBS_ONLINE::-1}
+
+ echo "central_status_unb2.sh: Online UniBoards2:" $UNBS_ONLINE
+
+ if [ "$UNBS_ONLINE" == "$UNBS" ]; then
+ echo central_status_unb2.sh: Passed - all passed UniBoards2 online
+ else
+ echo central_status_unb2.sh: Error - one or more Uniboards2 offline
+ fi
+ fi
+else
+ ###############################################################################
+ # Post (command sequence) check
+ ###############################################################################
+ echo "central_status_unb2.sh: Performing post-check"
+ UNB_FACTORY=$(python $UPE/peripherals/util_system_info.py --unb2 $UNBS --pn2 0:3 -n 2 | grep -c arts_unb2b_sc4_fwd)
+ if [ "$UNB_FACTORY" == "0" ]; then
+ echo central_status_unb2.sh: Passed - Found the application images online
+ else
+ echo central_status_unb2.sh: Passed - one or more unb2 FPGAs is running arts_unb2b_sc4_fwd
+ fi
+fi