Allen-Bradley 1771-HODS Converter ODS Module for PLC-5 By wayne No Comments on Allen-Bradley 1771-HODS Converter ODS Module for PLC-5 2 Min Read Buy the Allen-Bradley 1771-HODS Converter ODS module for PLC-5. Supports RS-232/RS-422, longline option up to 1200 ft, DIN rail mounting.