1. A conveyance device for use in a mounting system including a mounter configured to perform at least one of applying a viscous fluid to a target board and arranging a member on the target board, the conveyance device comprising:a conveyance robot including a robot-side attachment section arranged at a distal end section of the conveyance robot for mounting a pallet-side attachment section of a pallet which holds the target board; and
a processor configured to control the conveyance robot toconvey the pallet in a mounted state from a loading position to a processing position,
orient the pallet at the processing position so that a forming surface on the target board is horizontal and at a specified height, and
convey the pallet after the processing to a discharge position.