A device information display apparatus comprising: a device information reception unit for acquiring device information of a device (1A to 1E) through a field bus, the device (1A to 1E) being connected to the field bus; a display unit configured to display the device information, which has been acquired by the device information reception unit, on a screen; a display switch unit configured to switch the devices (1A to 1E) of which the display unit displays the device information, switching of the devices being performed according to a predetermined order; and a manipulation unit that comprises a scroll knob that is rotatable to be manipulated, the manipulation unit transmitting an instruction signal depending on a rotation speed and rotation direction of the scroll knob to the display switch unit, and the display switch unit is provided so as to receive the instruction signal and so as to switch the devices (1A to 1E) in one of a forward direction and a reverse direction of the predetermined order based on a direction of the manipulation, which has been received by the manipulation unit; and the display unit is configured to display graphically an order of the devices (1A to 1E) of which the device information is to be displayed; wherein the display switch unit is further configured to: when the rotation speed of the scroll knob, which has been received by the display switch unit, is faster than or equal to a predetermined value, set a scan mode in which the display switch unit switches the displayed device continuously to following devices, and when a device-embedded timer has exceeded a given time or timed up without rotating the scroll knob in the scan mode, release the scan mode. a device information reception unit for acquiring device information of a device (1A to 1E) through a field bus, the device (1A to 1E) being connected to the field bus; a display unit configured to display the device information, which has been acquired by the device information reception unit, on a screen; a display switch unit configured to switch the devices (1A to 1E) of which the display unit displays the device information, switching of the devices being performed according to a predetermined order; and a manipulation unit that comprises a scroll knob that is rotatable to be manipulated, the manipulation unit transmitting an instruction signal depending on a rotation speed and rotation direction of the scroll knob to the display switch unit, and the display switch unit is provided so as to receive the instruction signal and so as to switch the devices (1A to 1E) in one of a forward direction and a reverse direction of the predetermined order based on a direction of the manipulation, which has been received by the manipulation unit; and the display unit is configured to display graphically an order of the devices (1A to 1E) of which the device information is to be displayed; wherein the display switch unit is further configured to: when the rotation speed of the scroll knob, which has been received by the display switch unit, is faster than or equal to a predetermined value, set a scan mode in which the display switch unit switches the displayed device continuously to following devices, and when a device-embedded timer has exceeded a given time or timed up without rotating the scroll knob in the scan mode, release the scan mode. when the rotation speed of the scroll knob, which has been received by the display switch unit, is faster than or equal to a predetermined value, set a scan mode in which the display switch unit switches the displayed device continuously to following devices, and when a device-embedded timer has exceeded a given time or timed up without rotating the scroll knob in the scan mode, release the scan mode.