Hi Dipak,
There is no SAP standard integration from SAP EM to SAP EWM or vice versa.
However you can integrate customer RFC functional call to post and receive events from SAP EWM.
1. Use standard BAPI EH_POST and EVM_MSG to receive data from SAP EWM
2. Use rule set (custom RFC functional module) to post data to SAP EWM system.
It would be little tedious job but It can be achievable. We have already done same path for SAP CRM to SAP EM.
Regards
GGOPII