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 5e17e23..606fe54 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 f5f944d..16ad282 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 6a8f6ed..a45957c 100644
--- a/source/app/app_common.c
+++ b/source/app/app_common.c
@@ -93,7 +93,7 @@ void Lu_register_init()
 	G.ccmd_slaver_info[2].reg = 0x03;
 	G.ccmd_slaver_info[2].regnum = 0x01;
 	G.ccmd_slaver_info[2].bytes = G.ccmd_slaver_info[2].regnum * 2;
-	G.ccmd_slaver_info[2].buf = (U8*)&G.flowStarted;
+	G.ccmd_slaver_info[2].buf = (U8*)&G.flowStartVal;
 	G.ccmd_slaver_info[2].mask = 0;
 	
 	G.ccmd_slaver_info[3].slaver = SLAVER_TCP_SERVER_ID;	//服务�?
@@ -107,9 +107,9 @@ void Lu_register_init()
 	G.modbusstmp = 0;
 	G.authed = 0;
 	G.flowStarted = 0;
+	G.flowStartVal = 1;
 
 	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 eb9d57e..8e480ed 100644
--- a/source/app/app_common.h
+++ b/source/app/app_common.h
@@ -202,12 +202,12 @@ typedef struct printer_maintenance_global
 	vU32 modbusstmp;
 	U16 authed;
 	U16 flowStarted;
+	U16 flowStartVal;
 	
 	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_gm35.c b/source/app/app_task_gm35.c
index 91fc301..942a8db 100644
--- a/source/app/app_task_gm35.c
+++ b/source/app/app_task_gm35.c
@@ -372,6 +372,17 @@ void L2_task_gm35_flow_handle(struct _s_task_gm35_gprs_ *s)
 		}
 
 	TTSS_Task_step(TTSS_TASK_GM35_FLOW_CIPSTART_SUCCESS)
+		if(1 == g_at_send_status.conn_ok)	
+		{
+			//连续20s没有收到数据，断线重连
+			if(s_nos_tick.t_1s - g_at_send_status.tcp_last_recv_stmp >= 60)	//20
+			{
+				L0_uart0_uc('D');
+				L0_uart4_sendstr(AT_INS_CLOSED);
+				g_at_send_status.conn_ok = 0;	//等待收到close 自动关闭
+			}
+		}
+
 		if(0 == g_at_send_status.conn_ok)	
 		{
 			//L0_uart4_uc(0x1a);	//关闭send
diff --git a/source/app/app_task_tcp.c b/source/app/app_task_tcp.c
index e84e4fb..5dd4efb 100644
--- a/source/app/app_task_tcp.c
+++ b/source/app/app_task_tcp.c
@@ -30,7 +30,7 @@ void L3_task_tcp_handle(TS_tcp *s)
   TTSS_Task_init();
 		L2_task_go(D_task_tcp_constructor_modbus_pkg);
 		
-	TTSS_Task_step(D_task_tcp_constructor_modbus_pkg)
+	TTSS_Task_step(D_task_tcp_constructor_modbus_pkg)	//构造包
 		if(G.ccmd_slaver_info[s->slaverIndex].mask > 0)
 		{
 			s->pkglen = L3_pack_ccmodbus(&s->loopPkg,G.ccmd_slaver_info + s->slaverIndex);
@@ -43,53 +43,60 @@ void L3_task_tcp_handle(TS_tcp *s)
 			L2_task_go(D_task_tcp_switch_next_slaver);
 		}
 		
-	TTSS_Task_step(D_task_tcp_send_modbus_pkg)
+	TTSS_Task_step(D_task_tcp_send_modbus_pkg)			//发送包
 		L0_uart0_sendArray((U8*)&s->loopPkg,s->pkglen);
 		L3_gm35_send((U8*)&s->loopPkg,s->pkglen);
-		s->sendStamp = s_nos_tick.t_5ms;
+		s->sendStamp = s_nos_tick.t_1s;
 		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 >= 300)
+	TTSS_Task_step(D_task_tcp_wait_modbus_ack)			//等待ack
+		if(s_uart4_tcp_rec.ok)
 		{
-			if(s_uart4_tcp_rec.ok)
+			s_uart4_tcp_rec.ok = 0;
+			g_at_send_status.tcp_last_recv_stmp = s_nos_tick.t_1s;
+
+			s->pAckPkg = (TS_PH3_ccmodbus*)(s_uart4_tcp_rec.sp);
+			L0_uart0_sendArray((U8*)s->pAckPkg,s->pAckPkg->num + 3);
+			if(s->pAckPkg->slaver == G.ccmd_slaver_info[s->slaverIndex].slaver)
 			{
-				s_uart4_tcp_rec.ok = 0;
-				s->pAckPkg = (TS_PH3_ccmodbus*)(s_uart4_tcp_rec.sp);
-				L0_uart0_sendArray((U8*)s->pAckPkg,s->pAckPkg->num + 3);
-				if(s->pAckPkg->slaver == G.ccmd_slaver_info[s->slaverIndex].slaver)
+				s->ackFlag = 1;
+				switch(s->slaverIndex)
+				{
+				case 0:
+					G.authed = 1;
+					break;
+				case 2:
+					G.flowStarted = 1;
+					break;
+				default:
+					break;
+				}
+				#if 0
+				if(s->pAckPkg->oper == MODBUS_OPER_WRITE_M)
 				{
-					s->ackFlag = 1;
-					G.tcpLastRecvStamp = s_nos_tick.t_1s;
-					if(s->pAckPkg->oper == MODBUS_OPER_WRITE_M)
+					s->treg = (U16)(s->pAckPkg->buf[0]) << 8 | (U16)(s->pAckPkg->buf[1]);
+					if(s->treg == G.ccmd_slaver_info[0].reg)
 					{
-						U16 reg = (U16)(s->pAckPkg->buf[0]) << 8 | (U16)(s->pAckPkg->buf[1]);
-						if(reg == G.ccmd_slaver_info[0].reg)
-						{
-							G.authed = 1;
-						}
-						else if(reg == G.md_slaver_info[2].reg)
-						{
-							G.flowStarted = 1;
-						}
+						G.authed = 1;
+					}
+					else if(s->treg == G.ccmd_slaver_info[2].reg)
+					{
+						G.flowStarted = 1;
 					}
 				}
+				#endif
 			}
-			if(s->ackFlag || ++s->retryTimes >= MODBUS_SLAVER_RETRY_MAX_TIME)
-			{	
-				L2_task_go(D_task_tcp_switch_next_slaver);
-			}
-			else
-			{
-				L2_task_go(D_task_tcp_send_modbus_pkg);
-			}
+		}
+		if(s->ackFlag == 1 || s_nos_tick.t_1s - s->sendStamp >= 5)	//收到ack或者超时
+		{
+			L2_task_go(D_task_tcp_switch_next_slaver);
 		}
 		
-	TTSS_Task_step(D_task_tcp_switch_next_slaver)
+	TTSS_Task_step(D_task_tcp_switch_next_slaver)		//切换下一个
 		if(++ s->slaverIndex >= CCMD_SLAVER_INFO_MAX)
 		{
 			s->slaverIndex = 0;
diff --git a/source/app/app_task_tcp.h b/source/app/app_task_tcp.h
index 74e050d..4ced5f7 100644
--- a/source/app/app_task_tcp.h
+++ b/source/app/app_task_tcp.h
@@ -15,6 +15,7 @@ typedef struct
 	U32 sendStamp;
 	U8 retryTimes;
 	U8 ackFlag;
+	U16 treg;
 }TS_tcp;
 
 #define U485_TIMEOUT 3	//3 x 100ms = 300ms
diff --git a/source/app/app_task_tcp_control.c b/source/app/app_task_tcp_control.c
index c62030c..98481eb 100644
--- a/source/app/app_task_tcp_control.c
+++ b/source/app/app_task_tcp_control.c
@@ -17,23 +17,26 @@ 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)
 {
-  TTSS_Task_init();
+  	TTSS_Task_init();
 		L2_task_go(D_task_tcp_control_01);
-		
+	
 	TTSS_Task_step(D_task_tcp_control_01)
 		if(s->conn_ok_pool != g_at_send_status.conn_ok)
 		{
 			G.authed = 0;
 			s->conn_ok_pool = g_at_send_status.conn_ok;
 		}
-		
-		if(s->conn_ok_pool)
+		L2_task_go(D_task_tcp_control_02);
+
+	TTSS_Task_step(D_task_tcp_control_02)
+		if(g_at_send_status.conn_ok)
 		{
 			//3s一次发送数据包
 			if(s_nos_tick.t_1s - ts_tcp_control.tcp_send_stmp >= 2)
-			{
+			{	
 				if(!G.authed)
 				{
 					//发送认证包
@@ -48,21 +51,11 @@ void L3_task_tcp_control_handle(TS_tcp_control *s)
 				{
 					G.ccmd_slaver_info[3].mask = 1;
 				}
-			}
-			ts_tcp_control.tcp_send_stmp = s_nos_tick.t_1s;
-		}
-		
-		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;
+				ts_tcp_control.tcp_send_stmp = s_nos_tick.t_1s;
 			}
 		}
 		L2_task_go(D_task_tcp_control_01);
+		
 	TTSS_Task_end();
 }