I've used the MT8070iH before on Micrologix and made my own cable using this the cable connection guide. I do have 2 different copies of the connection guide, here is a copy of the FX2N Connections from an older Connections Guide, It does show the PLC side as RS422 but has the same pin out on the cables as the first one I sent, Again I am not familiar with Mitsubishi PLC's