diff --git a/Core/Src/main.c b/Core/Src/main.c
index 0843de4..1770486 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -345,13 +345,13 @@ static void MX_GPIO_Init(void)
   /*Configure GPIO pins : HVS_OVERLOAD_Pin HVS_OVERHEAT_Pin */
   GPIO_InitStruct.Pin = HVS_OVERLOAD_Pin|HVS_OVERHEAT_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
   HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
 
   /*Configure GPIO pins : HVS_NOLINK_Pin HVS_XRAYON_Pin HVS_READY_Pin */
   GPIO_InitStruct.Pin = HVS_NOLINK_Pin|HVS_XRAYON_Pin|HVS_READY_Pin;
   GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
-  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Pull = GPIO_PULLDOWN;
   HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
 
   /*Configure GPIO pin : HVS_CONN_Pin */
diff --git a/RS485_BSV.ioc b/RS485_BSV.ioc
index 2664a9b..8a9c53e 100644
--- a/RS485_BSV.ioc
+++ b/RS485_BSV.ioc
@@ -86,8 +86,9 @@ NVIC.SVCall_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
 NVIC.SysTick_IRQn=true\:15\:0\:false\:false\:true\:false\:true\:false
 NVIC.USART1_IRQn=true\:0\:0\:false\:false\:true\:true\:true\:true
 NVIC.UsageFault_IRQn=true\:0\:0\:false\:false\:true\:false\:false\:false
-PA10.GPIOParameters=GPIO_Label
+PA10.GPIOParameters=GPIO_PuPd,GPIO_Label
 PA10.GPIO_Label=HVS_READY
+PA10.GPIO_PuPd=GPIO_PULLDOWN
 PA10.Locked=true
 PA10.Signal=GPIO_Input
 PA11.GPIOParameters=GPIO_Label
@@ -110,12 +111,14 @@ PA6.Signal=ADCx_IN6
 PA7.GPIOParameters=GPIO_Label
 PA7.GPIO_Label=I_MON
 PA7.Signal=ADCx_IN7
-PA8.GPIOParameters=GPIO_Label
+PA8.GPIOParameters=GPIO_PuPd,GPIO_Label
 PA8.GPIO_Label=HVS_NOLINK
+PA8.GPIO_PuPd=GPIO_PULLDOWN
 PA8.Locked=true
 PA8.Signal=GPIO_Input
-PA9.GPIOParameters=GPIO_Label
+PA9.GPIOParameters=GPIO_PuPd,GPIO_Label
 PA9.GPIO_Label=HVS_XRAYON
+PA9.GPIO_PuPd=GPIO_PULLDOWN
 PA9.Locked=true
 PA9.Signal=GPIO_Input
 PB3.Mode=Trace_Asynchronous_SW
@@ -140,16 +143,19 @@ PC4.Signal=ADCx_IN14
 PC5.GPIOParameters=GPIO_Label
 PC5.GPIO_Label=HVS_24V
 PC5.Signal=ADCx_IN15
-PC7.GPIOParameters=GPIO_Label
+PC7.GPIOParameters=PinState,GPIO_Label
 PC7.GPIO_Label=HVS_ENABLE
 PC7.Locked=true
+PC7.PinState=GPIO_PIN_RESET
 PC7.Signal=GPIO_Output
-PC8.GPIOParameters=GPIO_Label
+PC8.GPIOParameters=GPIO_PuPd,GPIO_Label
 PC8.GPIO_Label=HVS_OVERLOAD
+PC8.GPIO_PuPd=GPIO_PULLDOWN
 PC8.Locked=true
 PC8.Signal=GPIO_Input
-PC9.GPIOParameters=GPIO_Label
+PC9.GPIOParameters=GPIO_PuPd,GPIO_Label
 PC9.GPIO_Label=HVS_OVERHEAT
+PC9.GPIO_PuPd=GPIO_PULLDOWN
 PC9.Locked=true
 PC9.Signal=GPIO_Input
 PD0-OSC_IN.Mode=HSE-External-Oscillator
@@ -187,7 +193,7 @@ ProjectManager.ToolChainLocation=
 ProjectManager.UAScriptAfterPath=
 ProjectManager.UAScriptBeforePath=
 ProjectManager.UnderRoot=true
-ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_USART1_UART_Init-USART1-false-HAL-true,5-MX_DAC_Init-DAC-false-HAL-true,6-MX_ADC1_Init-ADC1-false-HAL-true,7-MX_UART4_Init-UART4-false-HAL-true
+ProjectManager.functionlistsort=1-SystemClock_Config-RCC-false-HAL-false,2-MX_GPIO_Init-GPIO-false-HAL-true,3-MX_DMA_Init-DMA-false-HAL-true,4-MX_USART1_UART_Init-USART1-false-HAL-true,5-MX_DAC_Init-DAC-false-HAL-true,6-MX_ADC1_Init-ADC1-false-HAL-true
 RCC.ADCFreqValue=12000000
 RCC.ADCPresc=RCC_ADCPCLK2_DIV6
 RCC.AHBFreq_Value=72000000