diff --git a/api/apibasic/reg_index.cpp b/api/apibasic/reg_index.cpp
index 81a046d..fbe174d 100644
--- a/api/apibasic/reg_index.cpp
+++ b/api/apibasic/reg_index.cpp
@@ -147,6 +147,8 @@ static reginfo_t table[] = {
     REG_ITERM(kreg_step_motor_enable_enc),
     REG_ITERM(kreg_step_motor_dzero_pos),
     REG_ITERM(kret_step_motor_pos_devi_tolerance),
+    REG_ITERM(kret_step_motor_io_trigger_append_distance),
+    
 
     REG_ITERM(kreg_mini_servo_pos),
     REG_ITERM(kreg_mini_servo_limit_velocity),
diff --git a/api/apibasic/reg_index.hpp b/api/apibasic/reg_index.hpp
index 788f59e..68377e1 100644
--- a/api/apibasic/reg_index.hpp
+++ b/api/apibasic/reg_index.hpp
@@ -145,6 +145,7 @@ typedef enum {
   kreg_step_motor_enable_enc                   = 10190,  //
   kreg_step_motor_dzero_pos                    = 10191,  // 驱动器处于调试模式
   kret_step_motor_pos_devi_tolerance           = 10192,  // 位置偏差容忍度
+  kret_step_motor_io_trigger_append_distance   = 10193,  // 移动到IO时，会在原点触发的边沿，稍稍里面移动一点，用来保证IO稳定触发
 
   /***********************************************************************************************************************
    *                                                     step_motor                                                      *