MIDI Triggers

The easiest way would be to use MIDI Show Control if the Roland supports it.

Then you set the MSC Device IDs to match, enable MSC Transmit from Eos and it will send "Goto Cue x" every time a cue is run, so you can easily match cue numbers in the Roland.

The MIDI ACN IDs in Eos and the Show Control Gateway are used to identify which MIDI port should be used to send the MIDI data - you can think of them as MIDI 'virtual cable' numbers.

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There's a page in the Wiki that gives more details: Understanding the MSC Commands Eos Family Receives/Transmits