communication between c185 and M800 ECU

Hello,
Now I have a C185 Dash manager and a M800 ECU ,but I have some problems in sending CAN messages from C185 to M800 ECU.
How can I set up my C185 and ECU? Thanks!
Now I have a C185 Dash manager and a M800 ECU ,but I have some problems in sending CAN messages from C185 to M800 ECU.
How can I set up my C185 and ECU? Thanks!