app/controllers/modbus_controller.rb

@@ -1,17 +1,6 @@
 class ModbusController < ApplicationController
   def index
     @schedule = Schedule.all
-    @modbus_running = Modbus::PollingService.running?
-  end
-
-  def start
-    Modbus::PollingService.start
-    redirect_to modbus_index_path
-  end
-
-  def stop
-    Modbus::PollingService.stop
-    redirect_to modbus_index_path
   end
 
   def schedule_edit

app/services/modbus/polling_service.rb

@@ -2,9 +2,9 @@ module Modbus
   class PollingService
     class << self
       def start
-        return if $modbus_polling_threads.any?(&:alive?)
+        return if @thread&.alive?
 
-        thread = Thread.new do
+        @thread = Thread.new do
           puts "[#{Time.current}] Modbus polling service 시작됨"
           last_logged_hour = nil
           loop do
@@ -32,17 +32,14 @@ module Modbus
             end
           end
         end
-        $modbus_polling_threads << thread
       end
 
       def stop
-        $modbus_polling_threads.each { |t| t.kill if t.alive? }
-        $modbus_polling_threads.clear
-        puts "[#{Time.now}] Modbus polling service 중지됨"
-      end
-
-      def running?
-        $modbus_polling_threads.any?(&:alive?)
+        if @thread
+          @thread.exit
+          @thread = nil
+          puts "[#{Time.now}] Modbus polling service 중지됨"
+        end
       end
     end
   end

app/views/modbus/index.html.erb

@@ -7,8 +7,9 @@
     <%= flash[:alert] %>
   </div>
 <% end %>
+
 <div class="flex flex-col h-full divide-y divide-border-table-border">
-  <div class="flex-1 overflow-y-auto p-4 space-y-4">
+  <div class="flex-1 overflow-y-auto p-4">
     <table class="base-table">
       <thead>
       <tr>
@@ -25,21 +26,6 @@
       <% end %>
       </tbody>
     </table>
-    <div>
-      <div class="flex gap-x-2">
-        <%= button_to "스케쥴러 시작", start_modbus_index_path, method: :post, class: "btn bg-accept" %>
-        <%= button_to "스케쥴러 정지", stop_modbus_index_path, method: :post, class: "btn bg-danger" %>
-      </div>
-
-      <div class="py-4">
-        <span class="font-semibold">스케쥴러 상태:</span>
-        <% if @modbus_running %>
-          <span class="text-accept font-bold">실행 중</span>
-        <% else %>
-          <span class="text-danger font-bold">정지됨</span>
-        <% end %>
-      </div>
-    </div>
   </div>
   <div class="flex p-4">
     <%= link_to "수정", "/modbus/schedule_edit", class: "btn bg-default-slate" %>

app/views/modbus/schedule_edit.html.erb

@@ -1,4 +1,4 @@
-<%= form_with url: schedule_edit_update_modbus_index_path, method: :post, class: 'flex flex-col h-full divide-y divide-border-table-border' do %>
+<%= form_with url: "/modbus/schedule_edit_update", method: :post, class: 'flex flex-col h-full divide-y divide-border-table-border' do %>
   <div class="flex-1 overflow-y-auto p-4">
     <table class="base-table">
       <thead>

config/initializers/modbus_service.rb

@@ -1,5 +1,3 @@
-$modbus_polling_threads ||= []
-
 Rails.application.config.after_initialize do
   Modbus::PollingService.start
 end

config/routes.rb

@@ -14,8 +14,9 @@ Rails.application.routes.draw do
 
   resources :modbus do
     collection do
-      post "start"
-      post "stop"
+      get "start"
+      get "stop"
+      get "status"
       get "schedule_edit"
       post "schedule_edit_update"
     end

db/seeds.rb

@@ -8,6 +8,6 @@
 #     MovieGenre.find_or_create_by!(name: genre_name)
 #   end
 
-(0..23).each do | h |
-  Schedule.create!(hour: h, temperature: 15.0)
+(0..23).each_with_index do |h, index|
+  Schedule.create!(hour: h, temperature: index)
 end