diff --git a/si4/soft_gsm_main.si4project/soft_gsm_main.siwork b/si4/soft_gsm_main.si4project/soft_gsm_main.siwork
index 75f0e8c..66280f8 100644
Binary files a/si4/soft_gsm_main.si4project/soft_gsm_main.siwork and b/si4/soft_gsm_main.si4project/soft_gsm_main.siwork differ
diff --git a/source/app/app_task_485.c b/source/app/app_task_485.c
index ddead16..6ac80fc 100644
--- a/source/app/app_task_485.c
+++ b/source/app/app_task_485.c
@@ -72,9 +72,9 @@ void L3_task_485_handle(TS_485 *s)
 					}
 					else if(s->pAckPkg->salver == G.md_slaver_info[4].slaver && s->pAckPkg->oper == MODBUS_OPER_READ)
 					{
-						if(s->pAckPkg->buf[1] != 0 && s->pAckPkg->buf[2] != 0)	//按键不为0
+						if(s->pAckPkg->buf[1] != 0 || s->pAckPkg->buf[2] != 0)	//按键不为0
 						{
-							G.rfid = s->pAckPkg->buf[1] << 8 | s->pAckPkg->buf[2];
+							G.rfid =  (U16)(s->pAckPkg->buf[1]) << 8 | (U16)(s->pAckPkg->buf[2]);
 						}
 					}
 				}