Plate processing installation comprising: a processing device for processing large-format plate-shaped workpieces, at least one stacking station for stacking processed workpieces, arranged in the material flow downstream of the processing device, a control device and an output device (21, 36) which is controlled by the control device and which outputs information for operating the plate processing installation, wherein the control device controls the output device (21, 36) in such a way that it outputs information relating to the desired position and desired orientation at the stacking station for a specific processed workpiece, characterized in that either the control device is integrated into the plate processing installation and determines at least one parameter characterizing a processed workpiece, or in that the control device and optionally also the output device is a device which can be separated from the plate processing installation, for example a personal computer, in that the control device determines the desired position and desired orientation at the stacking station for the processed workpiece dependent on a parameter or parameters characterizing the processed workpiece and an optimization parameter that can be preset by an operator in advance by selection, and in that the preset optimization parameter is at least one from the list: a centre of gravity of a stack of processed workpieces developing at the stacking station, a mass distribution of a stack of processed workpieces developing at the stacking station, a density of a stack of processed workpieces developing at the stacking station, a static stability of a stack of processed workpieces developing at the stacking station, a shape of a stack of processed workpieces developing at the stacking station, a reduction of protrusion of machined workpieces beyond the outline of the stacking station in the formation of a stack of machined workpieces developing at the stacking station, a height of a stack of machined workpieces developing at the stacking station, and a base area size (length and width) of a stack of machined workpieces developing at the stacking station. a processing device for processing large-format plate-shaped workpieces, at least one stacking station for stacking processed workpieces, arranged in the material flow downstream of the processing device, a control device and an output device (21, 36) which is controlled by the control device and which outputs information for operating the plate processing installation, wherein the control device controls the output device (21, 36) in such a way that it outputs information relating to the desired position and desired orientation at the stacking station for a specific processed workpiece, characterized in that either the control device is integrated into the plate processing installation and determines at least one parameter characterizing a processed workpiece, or in that the control device and optionally also the output device is a device which can be separated from the plate processing installation, for example a personal computer, in that the control device determines the desired position and desired orientation at the stacking station for the processed workpiece dependent on a parameter or parameters characterizing the processed workpiece and an optimization parameter that can be preset by an operator in advance by selection, and in that the preset optimization parameter is at least one from the list: a centre of gravity of a stack of processed workpieces developing at the stacking station, a mass distribution of a stack of processed workpieces developing at the stacking station, a density of a stack of processed workpieces developing at the stacking station, a static stability of a stack of processed workpieces developing at the stacking station, a shape of a stack of processed workpieces developing at the stacking station, a reduction of protrusion of machined workpieces beyond the outline of the stacking station in the formation of a stack of machined workpieces developing at the stacking station, a height of a stack of machined workpieces developing at the stacking station, and a base area size (length and width) of a stack of machined workpieces developing at the stacking station.