diff --git a/si4/soft_gsm_main.si4project/soft_gsm_main.sip_sym b/si4/soft_gsm_main.si4project/soft_gsm_main.sip_sym
index 6f18835..789c675 100644
Binary files a/si4/soft_gsm_main.si4project/soft_gsm_main.sip_sym and b/si4/soft_gsm_main.si4project/soft_gsm_main.sip_sym differ
diff --git a/si4/soft_gsm_main.si4project/soft_gsm_main.siwork b/si4/soft_gsm_main.si4project/soft_gsm_main.siwork
index b32481a..1e8d4e8 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_common.c b/source/app/app_common.c
index 1afd5fa..6a8f6ed 100644
--- a/source/app/app_common.c
+++ b/source/app/app_common.c
@@ -109,6 +109,7 @@ void Lu_register_init()
 	G.flowStarted = 0;
 
 	G._keyled = G._rfid = 0;
+	G.tcpLastRecvStamp = 0;
 }
 
 void L3_protocol_handler_uart4_fun(U8 *pPara)
diff --git a/source/app/app_common.h b/source/app/app_common.h
index 1a4c210..eb9d57e 100644
--- a/source/app/app_common.h
+++ b/source/app/app_common.h
@@ -200,13 +200,14 @@ typedef struct printer_maintenance_global
 	CCMD_SLAVER_INFO ccmd_slaver_info[CCMD_SLAVER_INFO_MAX];
 	
 	vU32 modbusstmp;
-	U8 authed;
-	U8 flowStarted;
+	U16 authed;
+	U16 flowStarted;
 	
 	U8 ccid[21]; //保存ccid卡号空间 20+'\0'
     TS_BoardStatus boardstatus;
 	U8 _keyled;
 	U8 _rfid;
+	U32 tcpLastRecvStamp;
 }PMGlobal;
 
 
diff --git a/source/app/app_task_tcp.c b/source/app/app_task_tcp.c
index 17ca18a..af4fbfb 100644
--- a/source/app/app_task_tcp.c
+++ b/source/app/app_task_tcp.c
@@ -47,10 +47,14 @@ void L3_task_tcp_handle(TS_tcp *s)
 		L0_uart0_sendArray((U8*)&s->loopPkg,s->pkglen);
 		L3_gm35_send((U8*)&s->loopPkg,s->pkglen);
 		s->sendStamp = s_nos_tick.t_5ms;
+		if(G.ccmd_slaver_info[s->slaverIndex].mask == 1)
+		{
+			G.ccmd_slaver_info[s->slaverIndex].mask = 0;
+		}
 		L2_task_go(D_task_tcp_wait_modbus_ack);
 		
     TTSS_Task_step(D_task_tcp_wait_modbus_ack)
-		if(s_nos_tick.t_5ms - s->sendStamp >= 20)
+		if(s_nos_tick.t_5ms - s->sendStamp >= 300)
 		{
 			if(s_uart4_tcp_rec.ok)
 			{
@@ -60,17 +64,12 @@ void L3_task_tcp_handle(TS_tcp *s)
 				if(s->pAckPkg->slaver == G.ccmd_slaver_info[s->slaverIndex].slaver)
 				{
 					s->ackFlag = 1;
-					if(G.ccmd_slaver_info[s->slaverIndex].mask == 1)
-					{
-						G.ccmd_slaver_info[s->slaverIndex].mask = 0;
-					}
-					
+					G.tcpLastRecvStamp = s_nos_tick.t_1s;
 					if(s->pAckPkg->oper == MODBUS_OPER_WRITE_M)
 					{
 						U16 reg = (U16)(s->pAckPkg->buf[0]) << 8 | (U16)(s->pAckPkg->buf[1]);
 						if(reg == G.ccmd_slaver_info[0].reg)
 						{
-							//收到认证包ack
 							G.authed = 1;
 						}
 						else if(reg == G.md_slaver_info[2].reg)
diff --git a/source/app/app_task_tcp_control.c b/source/app/app_task_tcp_control.c
index 2361d61..c62030c 100644
--- a/source/app/app_task_tcp_control.c
+++ b/source/app/app_task_tcp_control.c
@@ -15,6 +15,7 @@ void L3_task_tcp_control_init(void)
 }
 
 #define D_task_tcp_control_01 0x51
+#define D_task_tcp_control_02 0x52
 
 void L3_task_tcp_control_handle(TS_tcp_control *s)
 {
@@ -51,8 +52,17 @@ void L3_task_tcp_control_handle(TS_tcp_control *s)
 			ts_tcp_control.tcp_send_stmp = s_nos_tick.t_1s;
 		}
 		
-		L2_task_go(D_task_tcp_control_01);
+		L2_task_go(D_task_tcp_control_02);
 		
+	TTSS_Task_step(D_task_tcp_control_02)
+		if(g_at_send_status.conn_ok)
+		{
+			if(s_nos_tick.t_1s - G.tcpLastRecvStamp >= 20)
+			{
+				g_at_send_status.conn_ok = 0;
+			}
+		}
+		L2_task_go(D_task_tcp_control_01);
 	TTSS_Task_end();
 }