diff --git a/src/config.rs b/src/config.rs
index a58debf..8b2725a 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-use crate::modbus_types::{ModbusRegisterConfig, ModbusCoilsConfig};
+use crate::modbus_types::{ModbusCoilsConfig, ModbusInputRegisterConfig, ModbusHoldingRegisterConfig};
 
 #[derive(Debug, Serialize, Deserialize, Clone)]
 pub struct DefaultConfig {
@@ -46,8 +46,8 @@ pub struct AppConfig {
     pub influxdb: InfluxConfig,
     pub modbus: ModbusConfig,
     pub modbus_coils: Option<Vec<HashMap<String, ModbusCoilsConfig>>>,
-    pub modbus_input_register: Option<Vec<HashMap<String, ModbusRegisterConfig>>>,
-    pub modbus_holding_register: Option<Vec<HashMap<String, ModbusRegisterConfig>>>,
+    pub modbus_input_register: Option<Vec<HashMap<String, ModbusInputRegisterConfig>>>,
+    pub modbus_holding_register: Option<Vec<HashMap<String, ModbusHoldingRegisterConfig>>>,
 }
 
 #[derive(Debug, Default, Clone)]
diff --git a/src/main.rs b/src/main.rs
index 1b6d018..6cb2e5c 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,7 +11,7 @@ mod modbus;
 mod app_state;
 pub mod modbus_types;
 use crate::config::{AppConfig, ModbusValueMaps};
-use crate::modbus_types::{ModbusRegisterConfig, ModbusCoilsConfig};
+use crate::modbus_types::{ModbusInputRegisterConfig, ModbusHoldingRegisterConfig, ModbusCoilsConfig};
 use crate::app_state::AppState;
 
 async fn index(data: web::Data<AppState>) -> Result<HttpResponse> {
@@ -128,7 +128,8 @@ async fn settings_page(data: web::Data<AppState>) -> Result<HttpResponse> {
 #[derive(Serialize, Deserialize, Clone)]
 #[serde(untagged)]
 enum SaveTableRows {
-    Register(Vec<HashMap<String, ModbusRegisterConfig>>),
+    InputRegister(Vec<HashMap<String, ModbusInputRegisterConfig>>),
+    HoldingRegister(Vec<HashMap<String, ModbusHoldingRegisterConfig>>),
     Coils(Vec<HashMap<String, ModbusCoilsConfig>>),
 }
 
@@ -146,14 +147,14 @@ async fn save_table(
     let conf_path = "paramod.yaml";
     match req.table_id.as_str() {
         "modbus_input_register" => {
-            if let SaveTableRows::Register(rows) = req.rows.clone() {
+            if let SaveTableRows::InputRegister(rows) = req.rows.clone() {
                 config.modbus_input_register = Some(rows);
             } else {
                 return Ok(HttpResponse::BadRequest().body("Falscher Typ für input_register"));
             }
         }
         "modbus_holding_register" => {
-            if let SaveTableRows::Register(rows) = req.rows.clone() {
+            if let SaveTableRows::HoldingRegister(rows) = req.rows.clone() {
                 config.modbus_holding_register = Some(rows);
             } else {
                 return Ok(HttpResponse::BadRequest().body("Falscher Typ für holding_register"));
diff --git a/src/modbus.rs b/src/modbus.rs
index c008410..d363210 100644
--- a/src/modbus.rs
+++ b/src/modbus.rs
@@ -1,5 +1,5 @@
 use crate::config::{ModbusValueMaps, ModbusConfig};
-use crate::modbus_types::{ModbusRegisterConfig, ModbusCoilsConfig};
+use crate::modbus_types::{ModbusInputRegisterConfig, ModbusHoldingRegisterConfig, ModbusCoilsConfig};
 use std::collections::HashMap;
 use std::sync::{Arc, Mutex};
 use std::thread;
@@ -12,8 +12,8 @@ use std::net::SocketAddr;
 /// Startet einen Thread, der zyklisch Modbus-Register abfragt und ModbusValueMaps aktualisiert
 pub fn start_modbus_polling_thread(
     modbus_config: &ModbusConfig,
-    input_registers: &Option<Vec<HashMap<String, ModbusRegisterConfig>>>,
-    holding_registers: &Option<Vec<HashMap<String, ModbusRegisterConfig>>>,
+    input_registers: &Option<Vec<HashMap<String, ModbusInputRegisterConfig>>>,
+    holding_registers: &Option<Vec<HashMap<String, ModbusHoldingRegisterConfig>>>,
     coils: &Option<Vec<HashMap<String, ModbusCoilsConfig>>>,
     value_maps: Arc<Mutex<ModbusValueMaps>>,
     poll_interval: Duration,
diff --git a/src/modbus_types.rs b/src/modbus_types.rs
index 64b9fa9..4c2677e 100644
--- a/src/modbus_types.rs
+++ b/src/modbus_types.rs
@@ -9,8 +9,19 @@ pub struct ModbusCoilsConfig {
     pub comment: Option<String>,
 }
 
+
 #[derive(Debug, Serialize, Deserialize, Clone)]
-pub struct ModbusRegisterConfig {
+pub struct ModbusInputRegisterConfig {
+    pub addr: u16,
+    pub r#type: Option<String>,
+    pub factor: Option<f64>,
+    pub mqtt: Option<bool>,
+    pub influxdb: Option<bool>,
+    pub comment: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone)]
+pub struct ModbusHoldingRegisterConfig {
     pub addr: u16,
     pub r#type: Option<String>,
     pub factor: Option<f64>,
diff --git a/static/settings.js b/static/settings.js
index 182b970..9e74e57 100644
--- a/static/settings.js
+++ b/static/settings.js
@@ -44,8 +44,8 @@ async function saveSettings() {
         max_input_addr: parseInt(document.getElementById('modbus_max_input_addr').value, 10) || null,
         max_holding_addr: parseInt(document.getElementById('modbus_max_holding_addr').value, 10) || null,
         modbus_coils: null,
-        modbus_input_register: null,
-        modbus_holding_register: null
+        modbus_input_register: null, 
+        modbus_holding_register: null, 
     };
 
     // MQTT