Hermod+ not sending midi out trs midi

I am trying to send midi from my hermod+ to my lzx tbc2. With a trs cable i dont seem to be getting any response from the tbc2. In earlier testing i accidentally used a ts cable and the tbc2 was responding to midi messages (sporadically and incorrectly). I have the channel set correctly and the am sending the correct midi cc values. Does anyone have any idea why this is not working?