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Reply To: Hydros 21 CTD – Losing connection? [SOLVED]

Home › Forums › Environmental Sensors › Hydros 21 CTD – Losing connection? [SOLVED] › Reply To: Hydros 21 CTD – Losing connection? [SOLVED]

2021-06-01 at 10:53 PM #15584
Shannon Hicks
Moderator

    Does your Modbus wingshield do any level shifting of the CTD’s SDI-12 data line?  Is there anything on the wingshield tied to whatever Mayfly pin you’re using for the data line (I’m assuming D7)?