diff --git a/apps/protocols/modbus/mode/numericvalue.pm b/apps/protocols/modbus/mode/numericvalue.pm
new file mode 100644
index 000000000..34c92254d
--- /dev/null
+++ b/apps/protocols/modbus/mode/numericvalue.pm
@@ -0,0 +1,361 @@
+#
+# Copyright 2016 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package apps::protocols::modbus::mode::numericvalue;
+
+use base qw(centreon::plugins::templates::counter);
+
+use strict;
+use warnings;
+use List::Util qw (min max sum);
+use JSON;
+my $config_data;
+
+sub custom_metric_output {
+    my ($self, %options) = @_;
+    my $msg;
+    my $message;
+
+    if ($self->{result_values}->{type} eq 'unique') {
+        if (defined($config_data->{selection}->{$self->{result_values}->{instance}}->{formatting}->{printf_var}) && defined($config_data->{selection}->{$self->{result_values}->{instance}}->{formatting}->{printf_msg})) {
+            eval {
+                local $SIG{__WARN__} = sub { $message = $_[0]; };
+                local $SIG{__DIE__} = sub { $message = $_[0]; };
+                $msg = sprintf("$config_data->{selection}->{$self->{result_values}->{instance}}->{formatting}->{printf_msg}",
+                                eval "$config_data->{selection}->{$self->{result_values}->{instance}}->{formatting}->{printf_var}");
+            };
+        } elsif (defined($config_data->{filters}->{formatting}->{printf_var}) && defined($config_data->{filters}->{formatting}->{printf_msg})) {
+            eval {
+                local $SIG{__WARN__} = sub { $message = $_[0]; };
+                local $SIG{__DIE__} = sub { $message = $_[0]; };
+                $msg = sprintf("$config_data->{filters}->{formatting}->{printf_msg}", eval "$config_data->{filters}->{formatting}->{printf_var}");
+            };
+        } else {
+            $msg = sprintf("Metric '%s' value is '%s'", $self->{result_values}->{instance}, $self->{result_values}->{value});
+        }
+    }
+
+    if ($self->{result_values}->{type} eq 'global') {
+        if (defined($config_data->{virtualcurve}->{$self->{result_values}->{instance}}->{formatting})) {
+            eval {
+                local $SIG{__WARN__} = sub { $message = $_[0]; };
+                local $SIG{__DIE__} = sub { $message = $_[0]; };
+                $msg = sprintf("$config_data->{virtualcurve}->{$self->{result_values}->{instance}}->{formatting}->{printf_msg}",
+                                eval "$config_data->{virtualcurve}->{$self->{result_values}->{instance}}->{formatting}->{printf_var}");
+            };
+        } elsif (defined($config_data->{formatting}->{printf_var}) && defined($config_data->{formatting}->{printf_msg})) {
+            eval {
+                local $SIG{__WARN__} = sub { $message = $_[0]; };
+                local $SIG{__DIE__} = sub { $message = $_[0]; };
+                $msg = sprintf("$config_data->{formatting}->{printf_msg}", eval "$config_data->{formatting}->{printf_var}");
+            };
+        } else {
+            $msg = sprintf("Metric '%s' value is '%s'", $self->{result_values}->{instance}, $self->{result_values}->{value});
+        }
+    }
+
+    if (defined($message)) {
+        $self->{output}->output_add(long_msg => 'printf expression problem: ' . $message);
+        $self->{output}->option_exit();
+    }
+
+    return $msg;
+
+}
+
+sub custom_metric_calc {
+    my ($self, %options) = @_;
+
+    $self->{result_values}->{value} = $options{new_datas}->{$self->{instance} . '_value'};
+    $self->{result_values}->{unit} = $options{new_datas}->{$self->{instance} . '_unit'};
+    $self->{result_values}->{instance} = $options{new_datas}->{$self->{instance} . '_display'};
+    $self->{result_values}->{type} = $options{new_datas}->{$self->{instance} . '_type'};
+    $self->{result_values}->{perfdata_value} = $options{new_datas}->{$self->{instance} . '_value'};
+    $self->{result_values}->{perfdata_unit} = $options{new_datas}->{$self->{instance} . '_unit'};
+    $self->{result_values}->{min} = $options{new_datas}->{$self->{instance} . '_min'};
+    $self->{result_values}->{max} = $options{new_datas}->{$self->{instance} . '_max'};
+
+    my $elem = $self->{result_values}->{type} eq 'unique' ? 'selection' : 'virtualcurve';
+    my ($change_bytes_metric_selection, $change_bytes_metric_filter);
+    if (defined($config_data->{filters}->{formatting}->{change_bytes})) {
+        $change_bytes_metric_filter = $config_data->{filters}->{formatting}->{change_bytes};
+    }
+    if (defined($config_data->{$elem}->{$self->{result_values}->{instance}}->{formatting}->{change_bytes})) { 
+        $change_bytes_metric_selection = $config_data->{$elem}->{$self->{result_values}->{instance}}->{formatting}->{change_bytes};
+    }
+
+    if ((defined($change_bytes_metric_selection) && $change_bytes_metric_selection) || 
+        (defined($change_bytes_metric_filter) && $change_bytes_metric_filter) ||
+        ($config_data->{formatting}->{change_bytes} && !defined($change_bytes_metric_selection) && !defined($change_bytes_metric_filter))) {
+        ($self->{result_values}->{value}, $self->{result_values}->{unit}) = $self->{perfdata}->change_bytes(value => $self->{result_values}->{value});
+    }
+    return 0;
+}
+
+sub custom_metric_perfdata {
+    my ($self, %options) = @_;
+
+    $self->{output}->perfdata_add(label => $self->{result_values}->{instance},
+                                  value => $self->{result_values}->{perfdata_value},
+                                  warning => $self->{perfdata}->get_perfdata_for_output(label => ($self->{result_values}->{type} eq 'unique') ? 'warning-metric' : 'warning-global-'.$self->{result_values}->{instance}),
+                                  critical => $self->{perfdata}->get_perfdata_for_output(label => ($self->{result_values}->{type} eq 'unique') ? 'critical-metric' : 'critical-global-'.$self->{result_values}->{instance}),
+                                  unit => $self->{result_values}->{perfdata_unit},
+                                  min => $self->{result_values}->{min},
+                                  max => $self->{result_values}->{max},
+                                 );
+
+}
+
+sub custom_metric_threshold {
+    my ($self, %options) = @_;
+
+    my $label_warn = ($self->{result_values}->{type} eq 'unique') ? 'warning-metric' : 'warning-global-'.$self->{result_values}->{instance};
+    my $label_crit = ($self->{result_values}->{type} eq 'unique') ? 'critical-metric' : 'critical-global-'.$self->{result_values}->{instance};
+
+    my $exit = $self->{perfdata}->threshold_check(value => $self->{result_values}->{perfdata_value},
+                                                  threshold => [ { label => $label_crit, exit_litteral => 'critical' },
+                                                                 { label => $label_warn, exit_litteral => 'warning' } ]);
+    return $exit;
+}
+
+sub set_counters {
+    my ($self, %options) = @_;
+
+    $self->{maps_counters_type} = [
+    ];
+
+    $self->{maps_counters}->{global} = [
+        { label => 'global', set => {
+                key_values => [ { name => 'value' }, { name => 'display' }, { name => 'type' }, { name => 'unit' }, { name => 'min' }, { name => 'max' }  ],
+                closure_custom_calc => $self->can('custom_metric_calc'),
+                closure_custom_output => $self->can('custom_metric_output'),
+                closure_custom_perfdata => $self->can('custom_metric_perfdata'),
+                closure_custom_threshold_check => $self->can('custom_metric_threshold'),
+            }
+        }
+    ];
+
+    $self->{maps_counters}->{metric} = [
+        { label => 'metric', set => {
+                key_values => [ { name => 'value' }, { name => 'display' }, { name => 'type' }, { name => 'unit' }, { name => 'min' }, { name => 'max' } ],
+                closure_custom_calc => $self->can('custom_metric_calc'),
+                closure_custom_output => $self->can('custom_metric_output'),
+                closure_custom_perfdata => $self->can('custom_metric_perfdata'),
+                closure_custom_threshold_check => $self->can('custom_metric_threshold'),
+            }
+        }
+    ];
+}
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '1.0';
+    $options{options}->add_options(arguments =>
+                                {
+                                  "config:s"    => { name => 'config' },
+                                });
+    return $self;
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+    $self->SUPER::check_options(%options);
+
+    if (!defined($self->{option_results}->{config}) || $self->{option_results}->{config} eq '') {
+        $self->{output}->add_option_msg(short_msg => "Please define --config option");
+        $self->{output}->option_exit();
+    }
+    
+    $config_data = $self->parse_json_config(config => $self->{option_results}->{config});
+
+    if (!defined($config_data->{selection})) {
+        $self->{output}->add_option_msg(short_msg => "Config_error: there is no selection section in your JSON configuration !");
+        $self->{output}->option_exit();
+    }
+
+    $config_data->{formatting}->{printf_msg} = "Metric '%s' value is %d" if (!exists($config_data->{formatting}->{printf_msg}));
+    $config_data->{formatting}->{printf_metric_value} = "%d" if (!exists($config_data->{formatting}->{printf_metric_value}));
+    $config_data->{formatting}->{custom_message_global} = "Global metrics are OK" if (!exists($config_data->{formatting}->{custom_message_global}));
+    $config_data->{formatting}->{custom_message_metric} = "All metrics are OK" if (!exists($config_data->{formatting}->{custom_message_metric}));
+    $config_data->{formatting}->{cannonical_separator} = "#" if (!exists($config_data->{formatting}->{cannonical_separator}));
+    $config_data->{formatting}->{change_bytes} = 0 if (!exists($config_data->{formatting}->{change_bytes}));
+}
+
+sub parse_json_config {
+    my ($self, %options) = @_;
+    my ($data, $json_text);
+
+    if (-f $options{config} and -r $options{config}) {
+        $json_text = do {
+            local $/;
+            my $fh;
+            if (!open($fh, "<:encoding(UTF-8)", $options{config})) {
+                $self->{output}->add_option_msg(short_msg => "Can't open file $options{config}: $!");
+                $self->{output}->option_exit();
+            }
+            <$fh>;
+        };
+    } else {
+        $json_text = $options{config};
+    }
+
+    eval {
+        $data = decode_json($json_text);
+    };
+    if ($@) {
+        $self->{output}->add_option_msg(short_msg => "Cannot decode json config file: $@");
+        $self->{output}->option_exit();
+    }
+    return $data
+}
+
+sub manage_selection {
+    my ($self, %options) = @_;
+
+    $self->{metrics} = {};
+    $self->{vmetrics} = {};
+    $self->{metric} = {};
+    $self->{global} = {};
+
+    if (defined($config_data->{virtualcurve})) {
+        push @{$self->{maps_counters_type}}, {
+            name => 'global', type => 1, message_separator => $config_data->{formatting}->{message_separator}, message_multiple => $config_data->{formatting}->{custom_message_global},
+        };
+    }
+
+    if (defined($config_data->{selection})) {
+        push @{$self->{maps_counters_type}}, {
+            name => 'metric', type => 1, message_separator => $config_data->{formatting}->{message_separator}, message_multiple => $config_data->{formatting}->{custom_message_metric},
+        };
+        foreach my $id (keys %{$config_data->{selection}}) {
+            next if (!defined($config_data->{selection}->{id}->{address}));
+            my $results = $options{custom}->read_objects(address => $config_data->{selection}->{id}->{address},
+                unit => $config_data->{selection}->{id}->{unit}, quantity => $config_data->{selection}->{id}->{quantity});
+            my $i = 0;
+            foreach (@{$results}) {
+                my $metric_key = $id . '.' . $i;
+                $self->{metrics}->{$metric_key} = { name => $_->{metric_name} };
+                $self->{metrics}->{$metric_key}->{display_name} = $id;
+                $self->{metrics}->{$metric_key}->{current} = $_->{current_value};
+                $self->{metrics}->{$metric_key}->{unit} = defined($_->{unit_name}) ? $_->{unit_name} : '';
+                $self->{metrics}->{$metric_key}->{min} = defined($_->{min}) ? $_->{min} : '';
+                $self->{metrics}->{$metric_key}->{max} = defined($_->{max}) ? $_->{max} : '';
+                $self->{metrics}->{$metric_key}->{display} = (defined($_->{display}) && $_->{display}) ? 1 : 0;
+                $i++;
+                
+                $self->{metric}->{$metric_key} = {display => $self->{metrics}->{$metric_key}->{display_name},
+                    type => 'unique',
+                    unit => $self->{metrics}->{$metric_key}->{unit},
+                    value => $self->{metrics}->{$metric_key}->{current},
+                    min => $self->{metrics}->{$metric_key}->{min},
+                    max => $self->{metrics}->{$metric_key}->{max} } if ($self->{metrics}->{$metric_key}->{display} == 1);
+            }
+        }
+    }
+
+    foreach my $vcurve (keys %{$config_data->{virtualcurve}}) {
+        foreach my $metric (keys %{$self->{metrics}}) {
+            $self->{vmetrics}->{$vcurve}->{values} = [] if (!defined($self->{vmetrics}->{$vcurve}));
+            if (defined($config_data->{virtualcurve}->{$vcurve}->{pattern}) && $config_data->{virtualcurve}->{$vcurve}->{pattern} ne '') {
+                push (@{$self->{vmetrics}->{$vcurve}->{values}}, $self->{metrics}->{$metric}->{current}) if ($self->{metrics}->{$metric}->{name} =~ /$config_data->{virtualcurve}{$vcurve}->{pattern}/);
+            } else {
+                push (@{$self->{vmetrics}->{$vcurve}->{values}}, $self->{metrics}->{$metric}->{current});
+            }
+        }
+
+        next if (!defined($self->{vmetrics}->{$vcurve}->{values}) || scalar(@{$self->{vmetrics}->{$vcurve}->{values}}) == 0);
+        
+        $self->{vmetrics}->{$vcurve}->{aggregated_value} = sprintf($config_data->{formatting}->{printf_metric_value},
+                                                                sum(@{$self->{vmetrics}->{$vcurve}->{values}}) / scalar(@{$self->{vmetrics}->{$vcurve}->{values}})) if ($config_data->{virtualcurve}->{$vcurve}->{aggregation} eq 'avg');
+        $self->{vmetrics}->{$vcurve}->{aggregated_value} = sprintf($config_data->{formatting}->{printf_metric_value},
+                                                                sum(@{$self->{vmetrics}->{$vcurve}->{values}})) if ($config_data->{virtualcurve}->{$vcurve}->{aggregation} eq 'sum');
+        $self->{vmetrics}->{$vcurve}->{aggregated_value} = sprintf($config_data->{formatting}->{printf_metric_value},
+                                                                min(@{$self->{vmetrics}->{$vcurve}->{values}})) if ($config_data->{virtualcurve}->{$vcurve}->{aggregation} eq 'min');
+        $self->{vmetrics}->{$vcurve}->{aggregated_value} = sprintf($config_data->{formatting}->{printf_metric_value},
+                                                                max(@{$self->{vmetrics}->{$vcurve}->{values}})) if ($config_data->{virtualcurve}->{$vcurve}->{aggregation} eq 'max');
+        $self->{vmetrics}->{$vcurve}->{aggregated_value} = eval "$self->{vmetrics}->{$vcurve}->{aggregated_value} $config_data->{virtualcurve}->{$vcurve}->{custom}" if (defined($config_data->{virtualcurve}->{$vcurve}->{custom}));
+
+        $self->{vmetrics}->{$vcurve}->{unit} = (defined($config_data->{virtualcurve}->{$vcurve}->{unit})) ? $config_data->{virtualcurve}->{$vcurve}->{unit} : '';
+        $self->{vmetrics}->{$vcurve}->{min} = (defined($config_data->{virtualcurve}->{$vcurve}->{min})) ? $config_data->{virtualcurve}->{$vcurve}->{min} : '';
+        $self->{vmetrics}->{$vcurve}->{max} = (defined($config_data->{virtualcurve}->{$vcurve}->{max})) ? $config_data->{virtualcurve}->{$vcurve}->{max} : '';
+
+        if (defined($self->{option_results}->{'warning-global'}) || defined($config_data->{virtualcurve}->{$vcurve}->{warning})) {
+           $self->{perfdata}->threshold_validate(label => 'warning-global-' . $vcurve,
+                                                 value => (defined($self->{option_results}->{'warning-global'})) ? $self->{option_results}->{'warning-global'} : $config_data->{virtualcurve}->{$vcurve}->{warning});
+        }
+        if (defined($self->{option_results}->{'critical-global'}) || defined($config_data->{virtualcurve}->{$vcurve}->{critical})) {
+           $self->{perfdata}->threshold_validate(label => 'critical-global-' . $vcurve,
+                                                 value => (defined($self->{option_results}->{'critical-global'})) ? $self->{option_results}->{'critical-global'} : $config_data->{virtualcurve}->{$vcurve}->{critical});
+        }
+
+        $self->{global}->{$vcurve} = {
+            display => $vcurve,
+            type => 'global',
+            unit => $self->{vmetrics}->{$vcurve}->{unit},
+            value => $self->{vmetrics}->{$vcurve}->{aggregated_value},
+            min => $self->{vmetrics}->{$vcurve}->{min},
+            max => $self->{vmetrics}->{$vcurve}->{max}
+        }; 
+    }
+
+    if (scalar(keys %{$self->{metric}}) <= 0 && scalar(keys %{$self->{global}}) <= 0) {
+        $self->{output}->add_option_msg(short_msg => "No metrics returned - are your selection correct ?");
+        $self->{output}->option_exit();
+    }
+}
+
+1
+
+__END__
+
+=head1 MODE
+
+Mode to play with modbus metrics
+e.g: display two curves of different service on the same graph
+e.g: aggregate multiple metrics (min,max,avg,sum) or custom operation
+
+=over 8
+
+=item B<--config>
+
+Specify the config (can be a file or a json string directly).
+
+=item B<--filter-counters>
+
+Filter some counter (can be 'unique' or 'global')
+Useless, if you use selection/filter but not
+global/virtual curves
+
+=item B<--warning-*>
+
+Warning threshold (can be 'unique' or 'global')
+(Override config if set)
+
+=item B<--critical-*>
+
+Critical threshold (can be 'unique' or 'global')
+(Override config if set)
+
+=back
+
+=cut
diff --git a/apps/protocols/modbus/plugin.pm b/apps/protocols/modbus/plugin.pm
new file mode 100644
index 000000000..cfd0c49ee
--- /dev/null
+++ b/apps/protocols/modbus/plugin.pm
@@ -0,0 +1,49 @@
+#
+# Copyright 2017 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package apps::protocols::modbus::plugin;
+
+use strict;
+use warnings;
+use base qw(centreon::plugins::script_custom);
+
+sub new {
+    my ($class, %options) = @_;
+    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
+    bless $self, $class;
+
+    $self->{version} = '0.1';
+    %{$self->{modes}} = (
+                         'numeric-value'    => 'apps::protocols::modbus::mode::numericvalue',
+                         );
+
+    $self->{custom_modes}{api} = 'centreon::common::protocols::modbus::custom::api';
+    return $self;
+}
+
+1;
+
+__END__
+
+=head1 PLUGIN DESCRIPTION
+
+Generic Modbus plugin.
+
+=cut
diff --git a/centreon/common/protocols/modbus/custom/api.pm b/centreon/common/protocols/modbus/custom/api.pm
new file mode 100644
index 000000000..eedc83ed9
--- /dev/null
+++ b/centreon/common/protocols/modbus/custom/api.pm
@@ -0,0 +1,234 @@
+#
+# Copyright 2017 Centreon (http://www.centreon.com/)
+#
+# Centreon is a full-fledged industry-strength solution that meets
+# the needs in IT infrastructure and application monitoring for
+# service performance.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+package centreon::common::protocols::modbus::custom::api;
+
+use strict;
+use warnings;
+use centreon::plugins::misc;
+
+sub new {
+    my ($class, %options) = @_;
+    my $self  = {};
+    bless $self, $class;
+
+    if (!defined($options{output})) {
+        print "Class Custom: Need to specify 'output' argument.\n";
+        exit 3;
+    }
+    if (!defined($options{options})) {
+        $options{output}->add_option_msg(short_msg => "Class Custom: Need to specify 'options' argument.");
+        $options{output}->option_exit();
+    }
+    
+    if (!defined($options{noptions})) {
+        $options{options}->add_options(arguments => 
+                    {
+                      "rtu-port:s@"         => { name => 'rtu_port' },
+                      "rtu-baudrate:s@"     => { name => 'rtu_baudrate' },
+                      "rtu-databits:s@"     => { name => 'rtu_databits' },
+                      "rtu-parity:s@"       => { name => 'rtu_parity' },
+                      "rtu-stopbits:s@"     => { name => 'rtu_stopbits' },
+                      "tcp-host:s@"         => { name => 'tcp_host' },
+                      "tcp-port:s@"         => { name => 'tcp_port' },
+                      "timeout:s@"          => { name => 'timeout' },
+                    });
+    }
+    $options{options}->add_help(package => __PACKAGE__, sections => 'MODBUS OPTIONS', once => 1);
+
+    $self->{output} = $options{output};
+    $self->{mode} = $options{mode};
+
+    return $self;
+}
+
+sub set_options {
+    my ($self, %options) = @_;
+
+    $self->{option_results} = $options{option_results};
+    # We remove empty rtu_port and tcp_host
+    foreach my $label ('rtu_port', 'tcp_host') {
+        if (defined($self->{option_results}->{$label})) {
+            my @del_indexes = reverse(grep { $self->{option_results}->{$label}->[$_] eq '' } 0..$#{$self->{option_results}->{$label}});
+            foreach my $item (@del_indexes) {
+                splice (@{$self->{option_results}->{$label}}, $item, 1);
+            }
+        }
+    }
+}
+
+sub set_defaults {
+    my ($self, %options) = @_;
+
+    foreach (keys %{$options{default}}) {
+        if ($_ eq $self->{mode}) {
+            for (my $i = 0; $i < scalar(@{$options{default}->{$_}}); $i++) {
+                foreach my $opt (keys %{$options{default}->{$_}[$i]}) {
+                    if (!defined($self->{option_results}->{$opt}[$i])) {
+                        $self->{option_results}->{$opt}[$i] = $options{default}->{$_}[$i]->{$opt};
+                    }
+                }
+            }
+        }
+    }
+}
+
+sub check_options {
+    my ($self, %options) = @_;
+
+    $self->{modbus_type} = 1;
+    $self->{modbus_params} = { rtu => {} , tcp => {} };
+    my $timeout = (defined($self->{option_results}->{timeout})) ? shift(@{$self->{option_results}->{timeout}}) : 10;
+
+    if (defined($self->{option_results}->{rtu_port}->[0])) {
+        $self->{modbus_type} = 2;
+        $self->{modbus_params}->{rtu}->{port} = shift(@{$self->{option_results}->{rtu_port}});
+        $self->{modbus_params}->{rtu}->{baudrate} = (defined($self->{option_results}->{rtu_baudrate})) ? shift(@{$self->{option_results}->{rtu_baudrate}}) : 9600;
+        $self->{modbus_params}->{rtu}->{databits} = (defined($self->{option_results}->{rtu_databits})) ? shift(@{$self->{option_results}->{rtu_databits}}) : 8;
+        $self->{modbus_params}->{rtu}->{parity} = (defined($self->{option_results}->{rtu_parity})) ? shift(@{$self->{option_results}->{rtu_parity}}) : 'none';
+        $self->{modbus_params}->{rtu}->{stopbits} = (defined($self->{option_results}->{rtu_stopbits})) ? shift(@{$self->{option_results}->{rtu_stopbits}}) : 1;
+        $self->{modbus_params}->{rtu}->{timeout} = $timeout;
+    } elsif (defined($self->{option_results}->{tcp_host}->[0])) {
+        $self->{modbus_params}->{tcp}->{host} = shift(@{$self->{option_results}->{tcp_host}});
+        $self->{modbus_params}->{tcp}->{port} = (defined($self->{option_results}->{tcp_port})) ? shift(@{$self->{option_results}->{tcp_port}}) : 502;
+        $self->{modbus_params}->{tcp}->{timeout} = $timeout;
+    } else {
+        $self->{output}->add_option_msg(short_msg => "Need to specify --rtu-port or --tcp-host option.");
+        $self->{output}->option_exit();
+    }
+
+    if ((!defined($self->{modbus_params}->{rtu}->{port}) || scalar(@{$self->{option_results}->{rtu_port}}) == 0) && 
+        (!defined($self->{modbus_params}->{tcp}->{host}) || scalar(@{$self->{option_results}->{tcp_host}}) == 0)) {
+        return 0;
+    }
+    return 1;
+}
+
+sub connect {
+    my ($self, %options) = @_;
+    
+    if ($self->{modbus_type} == 1) {
+        centreon::plugins::misc::mymodule_load(output => $self->{output}, module => 'Device::Modbus::TCP::Client',
+                                               error_msg => "Cannot load module 'Device::Modbus::TCP::Client'.");
+        $self->{modbus_client} = new evice::Modbus::TCP::Client->new(%{$self->{modbus_params}->{tcp}});
+    } else {
+        centreon::plugins::misc::mymodule_load(output => $self->{output}, module => 'Device::Modbus::RTU::Client',
+                                               error_msg => "Cannot load module 'Device::Modbus::RTU::Client'.");
+        $self->{modbus_client} = new evice::Modbus::RTU::Client->new(%{$self->{modbus_params}->{rtu}});
+    }
+}
+
+my %mapping_methods = (
+    holding     => 'read_holding_registers',
+    coils       => 'read_coils',
+    discrete    => 'read_discrete_inputs',
+    input       => 'read_input_registers',
+);
+
+sub read_objects {
+    my ($self, %options) = @_;
+    my $unit = defined($options{unit}) ? $options{unit} : 1;
+    my $type = defined($options{type}) ? $options{type} : 'holding';
+    my $quantity = defined($options{quantity}) ? $options{quantity} : 1;
+    my $results = [];
+    
+    if (!defined($self->{modbus_client})) {
+        $self->connect();
+    }
+
+    my $method = $self->{modbus_client}->can($mapping_methods{$type});
+    if ($method) {
+        my $req = $self->{modbus_client}->$method(unit => $unit, address => $options{address}, quantity => $quantity);
+        if (!$self->{modbus_client}->send_request($req)) {
+            $self->{output}->add_option_msg(short_msg => "Modbus Request: send error $!");
+            $self->{output}->option_exit();
+        }
+        my $response = $self->{modbus_client}->receive_response;
+        if ($response->success()) {
+            $results = $response->values();
+        } else {
+            $self->{output}->add_option_msg(short_msg => "Modbus Request: error " . $response->message()->stringify());
+            $self->{output}->option_exit();
+        }
+    }
+
+    if (scalar(@{$results}) == 0) {
+        $self->{output}->add_option_msg(short_msg => "Modbus Request: Cant get a single value.");
+        $self->{output}->option_exit();
+    }
+    return $results;
+}
+
+1;
+
+__END__
+
+=head1 NAME
+
+Modbus connector library
+
+=head1 SYNOPSIS
+
+my modbus connector
+
+=head1 MODBUS OPTIONS
+
+=over 8
+
+=item B<--rtu-port>
+
+The serial port to open.
+Example: --rtu-port=/dev/ttyUSB0
+
+=item B<--rtu-baudrate>  
+
+A valid baud rate (Default: 9600)
+
+=item B<--rtu-databits>
+
+An integer from 5 to 8 (Default: 8)
+
+=item B<--rtu-parity>
+
+Either 'even', 'odd' or 'none' (Default: none)
+
+=item B<--rtu-stopbits>
+
+1 or 2 (Default: 1)
+
+=item B<--tcp-host>
+
+Host address
+
+=item B<--tcp-port>
+
+Host port (Default: 502)
+
+=item B<--timeout>
+
+Timeout in seconds (Default: 10)
+
+=back
+
+=head1 DESCRIPTION
+
+B<custom>.
+
+=cut
\ No newline at end of file