Equipment Command (ECD) segment — HL7v2 v2.5.1.
Contains commands sent to equipment for automation/instrument control.
5 fields per HL7 v2.5.1 specification.
@type t() :: %HL7v2.Segment.ECD{ extra_fields: term(), parameters: term(), reference_command_number: term(), remote_control_command: term(), requested_completion_time: term(), response_required: term() }