Seed CAN-Bus Shield -ECU

I have a Seed CAN-Bus Shield v1.2. I have connected it to a CAN-Bus network. I want to feed some data to the network.

My question is : the CAN-Bus Shield will appears like an ECU in the network.

I am using a PC connected to the network through an ELM 327 device, but the CAN-Bus Shield is not recognized like an ECU.

Thank you.