Hi, I work program for the mixer of powder adhesives and mortars, capacity is 2 tons, complete mixer is set to weight load cell, the mixer is filled from five silos, scales I set the two points, I set the zero and tare, program works very well .PLC (v570)more I have not installed, all functions of trying on the desk and scales I adjusted in grams to be easier to work with simulations of charging and discharging. So I came to a problem because workers empty mixer in 25 kg bags. In the first case: Mixer can not throw out the entire material, remains undetermined amount of material of less than 25 kg. in the latter case: In a mixer remained quantities of less than 25 kg (23,16,18,5 kg) which is insufficient for filling bags. I'm interested in, in any way solve this problem, because the residual quantity in the mixer affects the recipe of the product. How do automatic "tara" after every discharge mixer. I had some ideas that were not correct. The requirement for "start" I chose to value the balance is enough for about zero I ask for a little help