cc2530 enddevice suddenly cannot send massage to zigbee Coordinator.

Which example is your end device based on? Do you modify anything to the original example?

yes,my example is HomeAutomation Samplelight.and here is my configuration:

In config file:

-DDEFAULT_CHANLIST=0x06108800

-DZDAPP_CONFIG_PAN_ID=0xFFFF

In Enddev config file:

/* Common To All Applications */
-DCPU32MHZ // CC2530s Run at 32MHz
-DROOT=__near_func // MAC/ZMAC code in NEAR

/* MAC Settings */
-DMAC_CFG_TX_DATA_MAX=3
-DMAC_CFG_TX_MAX=6
-DMAC_CFG_RX_MAX=3
-DHAL_KEY=FALSE
-DHAL_LED=FALSE
-DHAL_LCD=FALSE
-DHAL_ADC=FALSE
-DNV_RESTORE
-DNV_INIT
-DPOWER_SAVING

// Define this flag to enable ZNP implementation of the ZCL_KEY_ESTABLISHMENT_ENDPOINT and task.
-DTC_LINKKEY_JOIN

If you use original example, do you still see the issue?

Yes, sometime this problem occur frequently, sometime it works well.

But in case ZDO_STATE_CHANGE: we use
if (zclDevice_NwkState == DEV_NWK_DISC)
{
if(u8_ZDApp_StopJoiningCycleFlag == 0)
{
zclDevice_RejoinCounter++;
AppDevNwkDiscCyCle();
}
}

to contorl beacon request for PM2 saving power. After 30min it stop send beacon requst.Just in here change NWK.

So, you actually modify codes before you test this. My question is that if you don't change anything, does the problem happen? When I was using Z-Stack 2.5.1, I don't see this issue.