三段式状态机问题

sync_proc

ROCESS(RST,CLK)BEGIN
   IF RST = '0' THEN
  current_state<=idle_state;
  ELSIF CLK'EVENT and CLK='1' THEN
   current_state<=next_state;
  END IF;
  END PROCESS sync_proc;
  comb_proc
       
ROCESS(current_state,counter0)
BEGIN
next_state<=current_state;
CASE current_state IS
  WHEN idle_state =>     --idle stage
     next_state <= start_state;
  WHEN start_state =>    --start stage
     IF counter0 = 2400 THEN --M2 run after M1 forwarding 2400 steps
      next_state <= work_state;
     ELSE
     next_state <= start_state;
     END IF;
  WHEN work_state =>     --work stage     
     next_state <= work_state;
  WHEN others =>
     next_state <= idle_state;
END CASE;   
END PROCESS comb_proc;

COUNTER:process(CLK1,next_state)begin
  if(CLK1'event and CLK1='1') then
  if next_state = start_state then
   if counter0 < 2400 then
    counter0 <= counter0+1;
   else
    counter0 <= 2400;
   end if;
  end if;
end if;
end process COUNTER;

SPEED_CTRL:process(CLK,next_state)
  begin
  if CLK'event and CLK='1' then
  case next_state is
  when idle_state =>
    ...
  when start_state =>
    ...
  when others =>
    ...
  end case;
  end if;
  end process SPEED_CTRL;

三段式状态机，在start_state延时2400个脉冲进入work_state，但是在第三段的输出信号时，在work_state中无输出信号，是因为状态机不能进入work_state的原因吗？我这样用counter0控制状态机进行状态转移可行吗？请高手指教，非常感谢

rst信号查查看

BEGIN<br>
&nbsp; &nbsp;&nbsp;&nbsp;next_state&lt;=current_state;这句去掉看看

三段式状态机，在start_state延时2400个脉冲进入work_state，但是在第三段的输出信号时，在work_state中无输出信号，是因为状态机不能进入work_state的原因吗？我这样用counter0控制状态机进行状态转移可行吗？请高手指教，非常感谢