Raul Posted August 5, 2011 Report Share Posted August 5, 2011 I am very new to PLCs, but I have learned a lot during the past few weeks and I finally managed to program the routine I need except for the loadcells. I have read and re-read every single help topic and example available regarding loadcells. I have also consulted the new and old forums but I'm still stucked with this issue. I can place the loadcell calibration FB along with the scan, tare, zero and write to eeprom commands. I do get readings but unfortunately I'm afraid those readings are not being converted to actual grams. For some reason the read zero is not working for me. Also I have no idea on how to linearize the variable I'm using on the HMI. I know the Y range is 0-1000 grams but I have no clue regarding what should be set on the X range. The loadcells are 2.2 lbs made by FUTEK model LRF400. they have an RO of 2mV/V nom. and a zero balance of + - 3% of the RO. I'm not sure if I need to set the gain and offset for the LC, the reading between +SG and -SG is 0.1mV AC. I would really appreciate your help in order to finish this project. Quote Link to comment Share on other sites More sharing options...
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