Intelligent Weighing Technology TB Series User's Operation Manual page 8

4 . 6 A C C U M U L A T I O N
When the scale is set to manual accumulation the weight displayed will be
stored in memory when the PRINT key is pressed and the weight is stable.
The display will show "ACC 1" and then the total in memory for 2 seconds
before returning to normal. If the optional RS-232 interface is installed the
weight will be output to a printer or PC.
Remove the weight, allowing the scale to return to zero and put a second
weight on. Press PRINT, the display will show "ACC 2" and then show the new
total. Continue until all weights have been added.
To view the totals in memory press the PRINT key when the scale is at zero.
The display will show the total number of items "ACC xx" and the total weight
before returning to zero. The totals will also be printed via the RS-232
interface.
To erase the memory press PRINT to view the totals and then press the SMPL
key to clear the memory.