diff --git a/src/main.rs b/src/main.rs
index 4173562..d29f54b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,11 +1,6 @@
 #![allow(dead_code)]
 
-use std::{
-    fmt::{self, Debug, Display},
-    path::Path,
-    process::Command,
-    sync::Mutex,
-};
+use std::{fmt::Debug, path::Path, process::Command, sync::Mutex};
 
 use clap::{Parser, Subcommand};
 use libmodbus_rs::{Modbus, ModbusClient, ModbusRTU};
@@ -16,6 +11,9 @@ use crate::offsets::{OffsetsEeprom, OffsetsRam};
 mod datatypes;
 use crate::datatypes::*;
 
+mod mppt_structs;
+use crate::mppt_structs::{MpptEeprom, MpptRam};
+
 const DEVICE_ID: u8 = 0x01;
 const RAM_DATA_SIZE: u16 = 0x005B;
 const EEPROM_BEGIN: u16 = 0xE000;
@@ -34,171 +32,6 @@ static INFO_SCALE: Mutex<Info> = Mutex::new(Info {
     i_scale: 1.,
 });
 
-#[derive(Debug)]
-struct MpptRam {
-    // scaling values
-    v_pu: f32,
-    i_pu: f32,
-    ver_sw: u16,
-    // filtered ADC
-    adc_vb_f_med: f32,
-    adc_vbterm_f: f32,
-    adc_vbs_f: f32,
-    adc_va_f: f32,
-    adc_ib_f_shadow: f32,
-    adc_ia_f_shadow: f32,
-    adc_p12_f: f32,
-    adc_p3_f: f32,
-    adc_pmeter_f: f32,
-    adc_p18_f: f32,
-    adc_v_ref: f32,
-    // temperatures
-    t_hs: u16,
-    t_rts: u16,
-    t_batt: u16,
-    // status
-    adc_vb_f_1m: f32,
-    adc_ib_f_1m: f32,
-    vb_min: f32,
-    vb_max: f32,
-    hourmeter_hi: u16,
-    hourmeter_lo: u16,
-    fault_all: u16,
-    alarm_hi: u16,
-    alarm_lo: u16,
-    dip_all: u16,
-    led_state: u16,
-    // charger
-    charge_state: u16,
-    vb_ref: f32,
-    ahc_r_hi: u16,
-    ahc_r_lo: u16,
-    ahc_t_hi: u16,
-    ahc_t_lo: u16,
-    kwhc_r: u16,
-    kwhc_t: u16,
-    // MpptRam
-    power_out_shadow: f32,
-    power_in_shadow: f32,
-    sweep_pin_max: f32,
-    sweep_vmp: f32,
-    sweep_voc: f32,
-    // logger - today's values
-    vb_min_daily: f32,
-    vb_max_daily: f32,
-    va_max_daily: f32,
-    ahc_daily: f32,
-    whc_daily: u16,
-    flags_daily: u16,
-    pout_max_daily: f32,
-    tb_min_daily: u16,
-    tb_max_daily: u16,
-    fault_daily: u16,
-    alarm_daily_hi: u16,
-    alarm_daily_lo: u16,
-    time_ab_daily: u16,
-    time_eq_daily: u16,
-    time_fl_daily: u16,
-    // manual control
-    ib_ref_slave: f32,
-    vb_ref_slave: f32,
-    va_ref_fixed: f32,
-    va_ref_fixed_pct: f32,
-}
-
-#[derive(Debug)]
-struct MpptEeprom {
-    ev_absorp: Voltage,
-    ev_float: Voltage,
-    et_absorp: Raw,
-    et_absorp_ext: Raw,
-    ev_absorp_ext: Voltage,
-    ev_float_cancel: Voltage,
-    et_float_exit_cum: Raw,
-    ev_eq: Voltage,
-    et_eqcalendar: Raw,
-    et_eq_above: Raw,
-    et_eq_reg: Raw,
-    et_batt_service: Raw,
-    ev_tempcomp: Tempcomp,
-    ev_hvd: Voltage,
-    ev_hvr: Voltage,
-    evb_ref_lim: Voltage,
-    etb_max: Raw,
-    etb_min: Raw,
-    ev_soc_g_gy: Voltage,
-    ev_soc_gy_y: Voltage,
-    ev_soc_y_yr: Voltage,
-    ev_soc_yr_r: Voltage,
-    emodbus_id: Raw,
-    emeterbus_id: Raw,
-    eib_lim: Current,
-    eva_ref_fixed_init: Voltage,
-    eva_ref_fixed_pct_init: VoltagePercentage,
-}
-
-impl Display for MpptEeprom {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
-        write!(
-            f,
-            "ev_absorp: {}
-ev_float: {}
-et_absorp: {}
-et_absorp_ext: {}
-ev_absorp_ext: {}
-ev_float_cancel: {}
-et_float_exit_cum: {}
-ev_eq: {}
-et_eqcalendar: {}
-et_eq_above: {}
-et_eq_reg: {}
-et_batt_service: {}
-ev_tempcomp: {}
-ev_hvd: {}
-ev_hvr: {}
-evb_ref_lim: {}
-etb_max: {}
-etb_min: {}
-ev_soc_g_gy: {}
-ev_soc_gy_y: {}
-ev_soc_y_yr: {}
-ev_soc_yr_r: {}
-emodbus_id: {}
-emeterbus_id: {}
-eib_lim: {}
-eva_ref_fixed_init: {}
-eva_ref_fixed_pct_init: {}",
-            self.ev_absorp.to_string_v(),
-            self.ev_float.to_string_v(),
-            self.et_absorp.to_string_v(),
-            self.et_absorp_ext.to_string_v(),
-            self.ev_absorp_ext.to_string_v(),
-            self.ev_float_cancel.to_string_v(),
-            self.et_float_exit_cum.to_string_v(),
-            self.ev_eq.to_string_v(),
-            self.et_eqcalendar.to_string_v(),
-            self.et_eq_above.to_string_v(),
-            self.et_eq_reg.to_string_v(),
-            self.et_batt_service.to_string_v(),
-            self.ev_tempcomp.to_string_v(),
-            self.ev_hvd.to_string_v(),
-            self.ev_hvr.to_string_v(),
-            self.evb_ref_lim.to_string_v(),
-            self.etb_max.to_string_v(),
-            self.etb_min.to_string_v(),
-            self.ev_soc_g_gy.to_string_v(),
-            self.ev_soc_gy_y.to_string_v(),
-            self.ev_soc_y_yr.to_string_v(),
-            self.ev_soc_yr_r.to_string_v(),
-            self.emodbus_id.to_string_v(),
-            self.emeterbus_id.to_string_v(),
-            self.eib_lim.to_string_v(),
-            self.eva_ref_fixed_init.to_string_v(),
-            self.eva_ref_fixed_pct_init.to_string_v()
-        )
-    }
-}
-
 #[derive(Parser)]
 #[clap(disable_help_subcommand = true)]
 #[clap(author, about, long_about = None)]
@@ -295,97 +128,8 @@ fn main() {
             v_scale: 1.,
             i_scale: 1.,
         };
-        let ram_data = MpptRam {
-            v_pu: 0.,
-            i_pu: 0.,
-            ver_sw: 0,
-            adc_vb_f_med: 0.,
-            adc_vbterm_f: 0.,
-            adc_vbs_f: 0.,
-            adc_va_f: 0.,
-            adc_ib_f_shadow: 0.,
-            adc_ia_f_shadow: 0.,
-            adc_p12_f: 0.,
-            adc_p3_f: 0.,
-            adc_pmeter_f: 0.,
-            adc_p18_f: 0.,
-            adc_v_ref: 0.,
-            t_hs: 0,
-            t_rts: 0,
-            t_batt: 0,
-            adc_vb_f_1m: 0.,
-            adc_ib_f_1m: 0.,
-            vb_min: 0.,
-            vb_max: 0.,
-            hourmeter_hi: 0,
-            hourmeter_lo: 0,
-            fault_all: 0,
-            alarm_hi: 0,
-            alarm_lo: 0,
-            dip_all: 0,
-            led_state: 0,
-            charge_state: 0,
-            vb_ref: 0.,
-            ahc_r_hi: 0,
-            ahc_r_lo: 0,
-            ahc_t_hi: 0,
-            ahc_t_lo: 0,
-            kwhc_r: 0,
-            kwhc_t: 0,
-            power_out_shadow: 0.,
-            power_in_shadow: 0.,
-            sweep_pin_max: 0.,
-            sweep_vmp: 0.,
-            sweep_voc: 0.,
-            vb_min_daily: 0.,
-            vb_max_daily: 0.,
-            va_max_daily: 0.,
-            ahc_daily: 0.,
-            whc_daily: 0,
-            flags_daily: 0,
-            pout_max_daily: 0.,
-            tb_min_daily: 0,
-            tb_max_daily: 0,
-            fault_daily: 0,
-            alarm_daily_hi: 0,
-            alarm_daily_lo: 0,
-            time_ab_daily: 0,
-            time_eq_daily: 0,
-            time_fl_daily: 0,
-            ib_ref_slave: 0.,
-            vb_ref_slave: 0.,
-            va_ref_fixed: 0.,
-            va_ref_fixed_pct: 0.,
-        };
-        let eeprom_data = MpptEeprom {
-            ev_absorp: Voltage::from_u16(0x0000),
-            ev_float: Voltage::from_u16(0x0000),
-            et_absorp: Raw::from_u16(0x0000),
-            et_absorp_ext: Raw::from_u16(0x0000),
-            ev_absorp_ext: Voltage::from_u16(0x0000),
-            ev_float_cancel: Voltage::from_u16(0x0000),
-            et_float_exit_cum: Raw::from_u16(0x0000),
-            ev_eq: Voltage::from_u16(0x0000),
-            et_eqcalendar: Raw::from_u16(0x0000),
-            et_eq_above: Raw::from_u16(0x0000),
-            et_eq_reg: Raw::from_u16(0x0000),
-            et_batt_service: Raw::from_u16(0x0000),
-            ev_tempcomp: Tempcomp::from_u16(0x0000),
-            ev_hvd: Voltage::from_u16(0x0000),
-            ev_hvr: Voltage::from_u16(0x0000),
-            evb_ref_lim: Voltage::from_u16(0x0000),
-            etb_max: Raw::from_u16(0x0000),
-            etb_min: Raw::from_u16(0x0000),
-            ev_soc_g_gy: Voltage::from_u16(0x0000),
-            ev_soc_gy_y: Voltage::from_u16(0x0000),
-            ev_soc_y_yr: Voltage::from_u16(0x0000),
-            ev_soc_yr_r: Voltage::from_u16(0x0000),
-            emodbus_id: Raw::from_u16(0x0000),
-            emeterbus_id: Raw::from_u16(0x0000),
-            eib_lim: Current::from_u16(0x0000),
-            eva_ref_fixed_init: Voltage::from_u16(0x0000),
-            eva_ref_fixed_pct_init: VoltagePercentage::from_u16(0x0000),
-        };
+        let ram_data = MpptRam::get_fake();
+        let eeprom_data = MpptEeprom::get_fake();
         (info, ram_data, eeprom_data, None)
     };
 
diff --git a/src/mppt_structs.rs b/src/mppt_structs.rs
new file mode 100644
index 0000000..ee7ef06
--- /dev/null
+++ b/src/mppt_structs.rs
@@ -0,0 +1,268 @@
+use crate::datatypes::*;
+use std::fmt::{self, Debug, Display};
+
+#[derive(Debug)]
+pub struct MpptRam {
+    // scaling values
+    pub v_pu: f32,
+    pub i_pu: f32,
+    pub ver_sw: u16,
+    // filtered ADC
+    pub adc_vb_f_med: f32,
+    pub adc_vbterm_f: f32,
+    pub adc_vbs_f: f32,
+    pub adc_va_f: f32,
+    pub adc_ib_f_shadow: f32,
+    pub adc_ia_f_shadow: f32,
+    pub adc_p12_f: f32,
+    pub adc_p3_f: f32,
+    pub adc_pmeter_f: f32,
+    pub adc_p18_f: f32,
+    pub adc_v_ref: f32,
+    // temperatures
+    pub t_hs: u16,
+    pub t_rts: u16,
+    pub t_batt: u16,
+    // status
+    pub adc_vb_f_1m: f32,
+    pub adc_ib_f_1m: f32,
+    pub vb_min: f32,
+    pub vb_max: f32,
+    pub hourmeter_hi: u16,
+    pub hourmeter_lo: u16,
+    pub fault_all: u16,
+    pub alarm_hi: u16,
+    pub alarm_lo: u16,
+    pub dip_all: u16,
+    pub led_state: u16,
+    // charger
+    pub charge_state: u16,
+    pub vb_ref: f32,
+    pub ahc_r_hi: u16,
+    pub ahc_r_lo: u16,
+    pub ahc_t_hi: u16,
+    pub ahc_t_lo: u16,
+    pub kwhc_r: u16,
+    pub kwhc_t: u16,
+    // MpptRam
+    pub power_out_shadow: f32,
+    pub power_in_shadow: f32,
+    pub sweep_pin_max: f32,
+    pub sweep_vmp: f32,
+    pub sweep_voc: f32,
+    // logger - today's values
+    pub vb_min_daily: f32,
+    pub vb_max_daily: f32,
+    pub va_max_daily: f32,
+    pub ahc_daily: f32,
+    pub whc_daily: u16,
+    pub flags_daily: u16,
+    pub pout_max_daily: f32,
+    pub tb_min_daily: u16,
+    pub tb_max_daily: u16,
+    pub fault_daily: u16,
+    pub alarm_daily_hi: u16,
+    pub alarm_daily_lo: u16,
+    pub time_ab_daily: u16,
+    pub time_eq_daily: u16,
+    pub time_fl_daily: u16,
+    // manual control
+    pub ib_ref_slave: f32,
+    pub vb_ref_slave: f32,
+    pub va_ref_fixed: f32,
+    pub va_ref_fixed_pct: f32,
+}
+
+impl MpptRam {
+    pub fn get_fake() -> Self {
+        Self {
+            v_pu: 0.,
+            i_pu: 0.,
+            ver_sw: 0,
+            adc_vb_f_med: 0.,
+            adc_vbterm_f: 0.,
+            adc_vbs_f: 0.,
+            adc_va_f: 0.,
+            adc_ib_f_shadow: 0.,
+            adc_ia_f_shadow: 0.,
+            adc_p12_f: 0.,
+            adc_p3_f: 0.,
+            adc_pmeter_f: 0.,
+            adc_p18_f: 0.,
+            adc_v_ref: 0.,
+            t_hs: 0,
+            t_rts: 0,
+            t_batt: 0,
+            adc_vb_f_1m: 0.,
+            adc_ib_f_1m: 0.,
+            vb_min: 0.,
+            vb_max: 0.,
+            hourmeter_hi: 0,
+            hourmeter_lo: 0,
+            fault_all: 0,
+            alarm_hi: 0,
+            alarm_lo: 0,
+            dip_all: 0,
+            led_state: 0,
+            charge_state: 0,
+            vb_ref: 0.,
+            ahc_r_hi: 0,
+            ahc_r_lo: 0,
+            ahc_t_hi: 0,
+            ahc_t_lo: 0,
+            kwhc_r: 0,
+            kwhc_t: 0,
+            power_out_shadow: 0.,
+            power_in_shadow: 0.,
+            sweep_pin_max: 0.,
+            sweep_vmp: 0.,
+            sweep_voc: 0.,
+            vb_min_daily: 0.,
+            vb_max_daily: 0.,
+            va_max_daily: 0.,
+            ahc_daily: 0.,
+            whc_daily: 0,
+            flags_daily: 0,
+            pout_max_daily: 0.,
+            tb_min_daily: 0,
+            tb_max_daily: 0,
+            fault_daily: 0,
+            alarm_daily_hi: 0,
+            alarm_daily_lo: 0,
+            time_ab_daily: 0,
+            time_eq_daily: 0,
+            time_fl_daily: 0,
+            ib_ref_slave: 0.,
+            vb_ref_slave: 0.,
+            va_ref_fixed: 0.,
+            va_ref_fixed_pct: 0.,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct MpptEeprom {
+    pub ev_absorp: Voltage,
+    pub ev_float: Voltage,
+    pub et_absorp: Raw,
+    pub et_absorp_ext: Raw,
+    pub ev_absorp_ext: Voltage,
+    pub ev_float_cancel: Voltage,
+    pub et_float_exit_cum: Raw,
+    pub ev_eq: Voltage,
+    pub et_eqcalendar: Raw,
+    pub et_eq_above: Raw,
+    pub et_eq_reg: Raw,
+    pub et_batt_service: Raw,
+    pub ev_tempcomp: Tempcomp,
+    pub ev_hvd: Voltage,
+    pub ev_hvr: Voltage,
+    pub evb_ref_lim: Voltage,
+    pub etb_max: Raw,
+    pub etb_min: Raw,
+    pub ev_soc_g_gy: Voltage,
+    pub ev_soc_gy_y: Voltage,
+    pub ev_soc_y_yr: Voltage,
+    pub ev_soc_yr_r: Voltage,
+    pub emodbus_id: Raw,
+    pub emeterbus_id: Raw,
+    pub eib_lim: Current,
+    pub eva_ref_fixed_init: Voltage,
+    pub eva_ref_fixed_pct_init: VoltagePercentage,
+}
+
+impl MpptEeprom {
+    pub fn get_fake() -> Self {
+        Self {
+            ev_absorp: Voltage::from_u16(0x0000),
+            ev_float: Voltage::from_u16(0x0000),
+            et_absorp: Raw::from_u16(0x0000),
+            et_absorp_ext: Raw::from_u16(0x0000),
+            ev_absorp_ext: Voltage::from_u16(0x0000),
+            ev_float_cancel: Voltage::from_u16(0x0000),
+            et_float_exit_cum: Raw::from_u16(0x0000),
+            ev_eq: Voltage::from_u16(0x0000),
+            et_eqcalendar: Raw::from_u16(0x0000),
+            et_eq_above: Raw::from_u16(0x0000),
+            et_eq_reg: Raw::from_u16(0x0000),
+            et_batt_service: Raw::from_u16(0x0000),
+            ev_tempcomp: Tempcomp::from_u16(0x0000),
+            ev_hvd: Voltage::from_u16(0x0000),
+            ev_hvr: Voltage::from_u16(0x0000),
+            evb_ref_lim: Voltage::from_u16(0x0000),
+            etb_max: Raw::from_u16(0x0000),
+            etb_min: Raw::from_u16(0x0000),
+            ev_soc_g_gy: Voltage::from_u16(0x0000),
+            ev_soc_gy_y: Voltage::from_u16(0x0000),
+            ev_soc_y_yr: Voltage::from_u16(0x0000),
+            ev_soc_yr_r: Voltage::from_u16(0x0000),
+            emodbus_id: Raw::from_u16(0x0000),
+            emeterbus_id: Raw::from_u16(0x0000),
+            eib_lim: Current::from_u16(0x0000),
+            eva_ref_fixed_init: Voltage::from_u16(0x0000),
+            eva_ref_fixed_pct_init: VoltagePercentage::from_u16(0x0000),
+        }
+    }
+}
+
+impl Display for MpptEeprom {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        write!(
+            f,
+            "ev_absorp: {}
+ev_float: {}
+et_absorp: {}
+et_absorp_ext: {}
+ev_absorp_ext: {}
+ev_float_cancel: {}
+et_float_exit_cum: {}
+ev_eq: {}
+et_eqcalendar: {}
+et_eq_above: {}
+et_eq_reg: {}
+et_batt_service: {}
+ev_tempcomp: {}
+ev_hvd: {}
+ev_hvr: {}
+evb_ref_lim: {}
+etb_max: {}
+etb_min: {}
+ev_soc_g_gy: {}
+ev_soc_gy_y: {}
+ev_soc_y_yr: {}
+ev_soc_yr_r: {}
+emodbus_id: {}
+emeterbus_id: {}
+eib_lim: {}
+eva_ref_fixed_init: {}
+eva_ref_fixed_pct_init: {}",
+            self.ev_absorp.to_string_v(),
+            self.ev_float.to_string_v(),
+            self.et_absorp.to_string_v(),
+            self.et_absorp_ext.to_string_v(),
+            self.ev_absorp_ext.to_string_v(),
+            self.ev_float_cancel.to_string_v(),
+            self.et_float_exit_cum.to_string_v(),
+            self.ev_eq.to_string_v(),
+            self.et_eqcalendar.to_string_v(),
+            self.et_eq_above.to_string_v(),
+            self.et_eq_reg.to_string_v(),
+            self.et_batt_service.to_string_v(),
+            self.ev_tempcomp.to_string_v(),
+            self.ev_hvd.to_string_v(),
+            self.ev_hvr.to_string_v(),
+            self.evb_ref_lim.to_string_v(),
+            self.etb_max.to_string_v(),
+            self.etb_min.to_string_v(),
+            self.ev_soc_g_gy.to_string_v(),
+            self.ev_soc_gy_y.to_string_v(),
+            self.ev_soc_y_yr.to_string_v(),
+            self.ev_soc_yr_r.to_string_v(),
+            self.emodbus_id.to_string_v(),
+            self.emeterbus_id.to_string_v(),
+            self.eib_lim.to_string_v(),
+            self.eva_ref_fixed_init.to_string_v(),
+            self.eva_ref_fixed_pct_init.to_string_v()
+        )
+    }
+}