S120 Central Disconnect / connect DM_EVT_DISCONNECTwill occur

[Charles]

Hi~ Sir: I test S120 connect with S110 have problem ,test methods are as follows

1. S120 connect with S110 ,function ok.
2. S110 Power Off and On, the interval time about 1-2sec
3. S120 will connect again with S110, but S120 DM_EVT_DISCONNECTION was occur after 5s How to avoid it? thanks

[run_ar]

Which softdevice versions and what applications are you testing with?
Any way you could provide a sniffer trace?

[Charles]

1. S120 softdevice: nrF51_2.1.0
2. ble_app_uart_c s120 master / S110 nus