diff --git a/read_config b/read_config
index ab8198f..2f06c29 100755
--- a/read_config
+++ b/read_config
@@ -1,4 +1,4 @@
-#!/bin/bash
+#! /bin/bash -
 # set -x
 
 source ./log_helpers
@@ -7,7 +7,8 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     readonly read_config_sourced=${BASH_SOURCE[0]}
 
     readonly DATEFLAGS="+%Y.%m.%dT%H.%M.%S"
-    readonly STRIPCOMMENTS='sed -e s/#.*$//'
+    readonly STRIPCOMMENTS='sed -e s/#.*$//g'
+    readonly STRIPWHITESPACE='sed -E -e s/^[[:space:]]*$//g'
     readonly INDENT="awk '{ print \"\t\t\t\" \$0 }'"
     readonly JOINLINES="tr '\n' '\040'"
 
@@ -21,22 +22,21 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
 
     readonly WORKSPACE_DIR=workspace
 
-    ${WORKING_DIRECTORY:=$UPDATEPSAHOME}
-    ${CONFIGFILENAME:=update_psa.conf}
+    WORKING_DIRECTORY=${WORKING_DIRECTORY:-$UPDATEPSAHOME}
+    CONFIGFILENAME=${CONFIGFILENAME:-'update_psa.conf'}
 
     if ! [ -f "$CONFIGFILENAME" ]; then
         log_fatal "$func:${LINENO}: $CONFIGFILENAME not found"
     fi
 
-    if [ -z "$WORKING_DIRECTORY" ]; then 
-        log_fatal "$func:${LINENO}: WORKING_DIRECTORY not set in $cf"
+    if ! [ -d "$WORKING_DIRECTORY" ]; then 
+        log_fatal "$func:${LINENO}: $WORKING_DIRECTORY not found"
     fi
     
     EXITCODE=0
     CLONE_CUSTOMER_REPOSITORY=false
 
     # read config file (JSON syntax)
-    #
     read_config() {
         local func="${FUNCNAME[0]}"
     
@@ -78,15 +78,24 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         readonly CUSTOMER_REPOSITORY_PATH="${__r_path}/${CUSTOMER_ID}.git"
         log_debug "$func:${LINENO}: customer-r-path=$CUSTOMER_REPOSITORY_PATH"
 
-        readonly number_of_zone_groups="$(cat "$cf" | jq -r .zone_group[0])"
-        log_debug "$func:${LINENO}: $number_of_zone_groups zone_group(s)"
+        local __number_of_zone_groups=$(cat "$cf"    | 
+                                        jq -r .zg[0] |
+                                        sed -E -e 's/[[:space:]]*//g')
+        # TODO: was ist hier falsch
+        # __n_of_zgroups=$(echo "$__n_of_zgrps" | ${STRIPWHITESPACE} )
+        log_debug "$func:${LINENO}: #n of zone_groups: $__number_of_zone_groups"
 
-        local __zone_groups=(0)
-        for zg in `seq 1 $number_of_zone_groups`; do
-            local __n_zones="$(cat "$cf" | jq -r .zone_group[$zg].zone[0])"
+        local __zone_groups=($__number_of_zone_groups)
+        for zg in `seq 1 $__number_of_zone_groups`; do
+            local __n_zones=$(cat "$cf"        |
+                              jq -r .zg[$zg].z |
+                              sed -E -e 's/[][,[:space:]]*//g') # rm ][ as well
             __zone_groups[$zg]=$__n_zones
         done
 
+        readonly ZONE_GROUPS=(${__zone_groups[@]})
+        log_debug "$func:${LINENO}: ZONE_GROUPS=${ZONE_GROUPS[@]}"
+
         log_debug "$func:${LINENO}: reading ${wd} done"
         
         return 0
@@ -97,16 +106,14 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     check_sanity_of_repository () {
         local func="${FUNCNAME[0]}"
 
-        local __customer_base_dir="$WORKING_DIRECTORY/${WORKSPACE_DIR}"
-        __customer_base_dir="${__customer_base_dir}/${CUSTOMER_ID}"
+        local __customer_id_base_dir="$WORKING_DIRECTORY/${WORKSPACE_DIR}"
+        readonly CUSTOMER_ID_BASE_DIR="${__customer_id_base_dir}/${CUSTOMER_ID}"
 
-        readonly CUSTOMER_ID_BASE_DIR=${__customer_base_dir}
         log_debug "$func:${LINENO}: CUSTOMER_ID_BASE_DIR="
         log_debug "$func:${LINENO}:      $CUSTOMER_ID_BASE_DIR"
 
-        __customer_base_dir="${__customer_base_dir}/${CUSTOMER_LOCATION}"
+        CUSTOMER_LOCATION_DIR="${CUSTOMER_ID_BASE_DIR}/${CUSTOMER_LOCATION}"
 
-        readonly CUSTOMER_LOCATION_DIR="$__customer_base_dir"
         log_debug "$func:${LINENO}: CUSTOMER_LOCATION_DIR="
         log_debug "$func:${LINENO}:      $CUSTOMER_LOCATION_DIR"
 
@@ -114,26 +121,40 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
         log_debug "$func:${LINENO}: UPDATE.CONF="
         log_debug "$func:${LINENO}:      $UPDATE_CONF"
         
-        readonly current_conf="${CUSTOMER_LOCATION_DIR}/current.conf"
-        log_debug "$func:${LINENO}: current.conf="
-        log_debug "$func:${LINENO}:      $current_conf"
-
         # readonly zone_groups=(${__zone_groups[@]})
-        # for (( j=0; j<${#zone_groups[@]}; ++j)); do
-        #     log_debug "$func:${LINENO}: zgroup[$j]: ${zone_groups[$j]} zones"
-        # done 
+        # by now (03.03.2023) there is only one zone group.
+        readonly local __zgroup=1
+        local __number_of_zone_groups=${ZONE_GROUPS[0]}
+        local __zindex=1
+        local __customer_base_dirs=("placeholder")
+        for __zg in `seq 1 $__number_of_zone_groups`; do
+            local __n_of_zones=${ZONE_GROUPS[$__zindex]}
+            log_debug "$func:${LINENO}: zgroup $__zg has $__n_of_zones zones"
+            for (( j=1; j<=$__n_of_zones; ++j)); do
+                __customer_base_dirs+=("${CUSTOMER_LOCATION_DIR}/$__zgroup/$j")
+                log_debug "$func:${LINENO}: zone $j"
+                ((++__zindex))
+            done
+        done
 
-        # TODO: falls mehrere gruppen/zonen auftauchen hier anpassen        
-        readonly zgroup=1
-        readonly zone=1
-        readonly CUSTOMER_BASE_DIR="${__customer_base_dir}/${zgroup}/${zone}"
+        readonly CUSTOMER_BASE_DIRS=(${__customer_base_dirs[@]})
+
+        if [ ${#CUSTOMER_BASE_DIRS[@]} -eq 0 ]; then
+            log_fatal "$func:${LINENO}: CUSTOMER_BASE_DIRS empty"
+        fi
+
+        # TODO
+        # TODO: falls mehrere gruppen/zonen auftauchen hier anpassen
+        # TODO
+        readonly local __zone=1
+        readonly CUSTOMER_BASE_DIR="${CUSTOMER_BASE_DIRS[$__zone]}"
         if [ -d "$CUSTOMER_BASE_DIR" ]; then
-            log_debug "$func:${LINENO}: customer-base-dir="
+            log_debug "$func:${LINENO}: CUSTOMER-BASE-DIR="
             log_debug "$func:${LINENO}:      $CUSTOMER_BASE_DIR"
         else
             log_fatal "$func:${LINENO}: $CUSTOMER_BASE_DIR does not exist"
         fi
-
+        
         readonly psa_config_dir="${CUSTOMER_BASE_DIR}/etc/psa_config"
         if [ -d "$psa_config_dir" ]; then
             log_debug "$func:${LINENO}: psa_config_dir="
@@ -239,30 +260,44 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
             log_fatal "$func:${LINENO}: $SYSCONFIG_SYSCTRL_INI_FULL does not exist"
         fi
 
-        readonly emp_conf="${psa_config_dir}/emp.conf"
-        if [ -f "$emp_conf" ]; then
-            log_debug "$func:${LINENO}: emp.conf="
-            log_debug "$func:${LINENO}:      $emp_conf"
+        readonly DC2C_SERIAL_JSON="${psa_config_dir}/DC2C_serial.json"
+        if [ -f "$DC2C_SERIAL_JSON" ]; then
+            log_debug "$func:${LINENO}: DC2C_SERIAL_JSON="
+            log_debug "$func:${LINENO}:      $DC2C_SERIAL_JSON"
         else
-            log_fatal "$func:${LINENO}: $emp_conf does not exist"
+            log_fatal "$func:${LINENO}: $DC2C_SERIAL_JSON does not exist"
         fi
 
-        readonly device_conf="${psa_config_dir}/device.conf"
-        if [ -f "$device_conf" ]; then
-            log_debug "$func:${LINENO}: device.conf="
-            log_debug "$func:${LINENO}:      $device_conf"
+        readonly DC2C_CASH_JSON="${psa_config_dir}/DC2C_cash.json"
+        if [ -f "$DC2C_CASH_JSON" ]; then
+            log_debug "$func:${LINENO}: DC2C_CASH_JSON="
+            log_debug "$func:${LINENO}:      $DC2C_CASH_JSON"
         else
-            log_debug "$func:${LINENO}: $device_conf does not exist"
+            log_debug "$func:${LINENO}: $DC2C_CASH_JSON does not exist"
         fi
         
-        readonly printer_conf="${psa_config_dir}/printer.conf"
-        if [ -f "$printer_conf" ]; then
-            log_debug "$func:${LINENO}: printer.conf="
-            log_debug "$func:${LINENO}:      $printer_conf"
+        readonly DC2C_CONF_JSON="${psa_config_dir}/DC2C_conf.json"
+        if [ -f "$DC2C_CONF_JSON" ]; then
+            log_debug "$func:${LINENO}: DC2C_CONF_JSON="
+            log_debug "$func:${LINENO}:      $DC2C_CONF_JSON"
         else
-            log_fatal "$func:${LINENO}: $printer_conf does not exist"
+            log_fatal "$func:${LINENO}: $DC2C_CONF_JSON does not exist"
         fi
 
+        local DC2C_PRINT_JSON=()
+        for i in {1..32}; do    # up to 32 print-json-files
+            local __f=${psa_config_dir}/DC2C_print$(printf "%02d" $i).json
+            readonly DC2C_PRINT$(printf "%02d" $i)_JSON=$__f
+            # local __g=$(eval echo '$'DC2C_PRINT$(printf "%02d" $i)_JSON)
+            if [ -f $__f ]; then
+                log_debug "$func:${LINENO}: DC2C_PRINT$(printf "%02d" $i)_JSON="
+                log_debug "$func:${LINENO}:      $__f"
+            else
+                log_fatal "$func:${LINENO}: $__f does not exist"
+           fi
+           DC2C_PRINT_JSON+=($__f)
+        done
+
         readonly opkg_cmds_file="${psa_update_dir}/opkg_commands"
         if [ -f "$opkg_cmds_file" ]; then
             log_debug "$func:${LINENO}: opkg_commands="
@@ -271,16 +306,17 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
             log_fatal "$func:${LINENO}: $opkg_cmds_file does not exist"
         fi
 
-        readonly KNOWN_CONF_FILES=(${CUSTOMER_LOCATION}/update.conf     \
-                                   ${CUSTOMER_LOCATION}/current.conf    \
-                                   ${device_conf##*${CUSTOMER_ID}/}     \
-                                   ${emp_conf##*${CUSTOMER_ID}/}        \
-                                   ${printer_conf##*${CUSTOMER_ID}/})
+        # TODO: anpassen, da z.B. fuer szeged mehrere zonen vorhanden sind
+        readonly KNOWN_CONF_FILES=(${CUSTOMER_LOCATION}/update.conf         \
+                                   ${DC2C_PRINT_JSON[@]##*${CUSTOMER_ID}/}  \
+                                   ${DC2C_CONF_JSON##*${CUSTOMER_ID}/}      \
+                                   ${DC2C_CASH_JSON##*${CUSTOMER_ID}/}      \
+                                   ${DC2C_SERIAL_JSON##*${CUSTOMER_ID}/})
 
-        readonly KNOWN_INI_FILES=(${ATBQT_INI_FULL##*${CUSTOMER_ID}/}   \
-                      ${ISMASMGR_ISMASMGR_INI_FULL##*${CUSTOMER_ID}/}   \
-                      ${SYSCONFIG_ISMASMGR_INI_FULL##*${CUSTOMER_ID}/}  \
-                      ${SYSCONFIG_SYSCONFIG_INI_FULL##*${CUSTOMER_ID}/} \
+        readonly KNOWN_INI_FILES=(${ATBQT_INI_FULL##*${CUSTOMER_ID}/}       \
+                      ${ISMASMGR_ISMASMGR_INI_FULL##*${CUSTOMER_ID}/}       \
+                      ${SYSCONFIG_ISMASMGR_INI_FULL##*${CUSTOMER_ID}/}      \
+                      ${SYSCONFIG_SYSCONFIG_INI_FULL##*${CUSTOMER_ID}/}     \
                       ${SYSCONFIG_SYSCTRL_INI_FULL##*${CUSTOMER_ID}/})
         
         readonly KNOWN_FILES=(${KNOWN_CONF_FILES[@]} \
@@ -289,7 +325,8 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
 
         log_debug "$func:${LINENO}: known conf/ini_files ->"
         for (( i=0; i < ${#KNOWN_FILES[@]}; ++i )); do
-            log_debug "$func:${LINENO}: \t\t ${KNOWN_FILES[$i]}"
+            tab=$'\t'
+            log_debug "$func:${LINENO}: $tab$tab ${KNOWN_FILES[$i]}"
         done
         log_debug "$func:${LINENO}: sanity of ${CUSTOMER_REPOSITORY_PATH} OK"
 
@@ -297,3 +334,4 @@ if [ ${read_config_sourced:-1} = "1" ]; then    # include only once
     }
 fi
 
+