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 df8e79a..0654671 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.sip_xm b/si4/soft_gsm_main.si4project/soft_gsm_main.sip_xm
index 20f8fa1..5bf3baa 100644
Binary files a/si4/soft_gsm_main.si4project/soft_gsm_main.sip_xm and b/si4/soft_gsm_main.si4project/soft_gsm_main.sip_xm differ
diff --git a/si4/soft_gsm_main.si4project/soft_gsm_main.siwork b/si4/soft_gsm_main.si4project/soft_gsm_main.siwork
index b22d730..f6f36de 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_tcp.c b/source/app/app_task_tcp.c
index 2f7281d..533782e 100644
--- a/source/app/app_task_tcp.c
+++ b/source/app/app_task_tcp.c
@@ -44,7 +44,7 @@ void L3_task_tcp_handle(TS_tcp *s)
 		}
 		
 	TTSS_Task_step(D_task_tcp_send_modbus_pkg)
-		//L0_uart0_sendArray((U8*)&s->loopPkg,s->pkglen);
+		L0_uart0_sendArray((U8*)&s->loopPkg,s->pkglen);
 		L3_gm35_send((U8*)&s->loopPkg,s->pkglen);
 		s->sendStamp = s_nos_tick.t_5ms;
 		L2_task_go(D_task_tcp_wait_modbus_ack);
@@ -56,6 +56,7 @@ void L3_task_tcp_handle(TS_tcp *s)
 			{
 				s_uart4_tcp_rec.ok = 0;
 				s->pAckPkg = (TS_PH3_ccmodbus*)(s_uart4_tcp_rec.sp);
+				L0_uart0_sendArray(s->pAckPkg,s->pAckPkg->num + 3);
 				if(s->pAckPkg->slaver == G.ccmd_slaver_info[s->slaverIndex].slaver)
 				{
 					s->ackFlag = 1;