diff --git a/api/apibasic/reg_index.hpp b/api/apibasic/reg_index.hpp
index e983ac6..6348ec0 100644
--- a/api/apibasic/reg_index.hpp
+++ b/api/apibasic/reg_index.hpp
@@ -53,7 +53,6 @@ typedef enum {
   kreg_pipette_capactitance_val = REG_INDEX(40, 0, 1),  // 移液枪电容值
   kreg_pipette_tip_state        = REG_INDEX(40, 0, 2),  // 移动液枪tip状态
 
-
   kreg_pipette_limit_ul                    = REG_INDEX(40, 50, 1),
   kreg_pipette_pump_acc                    = REG_INDEX(40, 50, 2),
   kreg_pipette_pump_dec                    = REG_INDEX(40, 50, 3),
@@ -64,6 +63,8 @@ typedef enum {
   kreg_pipette_lld_pump_vel                = REG_INDEX(40, 50, 8),
   kreg_pipette_lld_motor_vel_rpm           = REG_INDEX(40, 50, 9),
   kreg_pipette_lld_detect_period_ms        = REG_INDEX(40, 50, 10),
+  kreg_pipette_lld_prepare_pos             = REG_INDEX(40, 50, 11),
+  kreg_pipette_lld_prepare_distribut_pos   = REG_INDEX(40, 50, 12),
 
   /***********************************************************************************************************************
    *                                                      光学模组                                                       *