zubair136

thanks all for your great advices. thanks for helping me out. 

Dear Panic Mode thanks for your precious reply.    but can u guide me that how can i do that.  infact flow is around 6 m3/ h . i am making a totalizer . the value of flow for totalizer per second is around 0.0003 then how can i add them in previous total . 

in My case the value in D72 = 0.0003 then value of D500 struck at 8192.000 dont know why . Kindly help me out. you will be a life savour.   

Dear. Can you explain it  please.   

Ladder is simple as   M8013                                    Deadd d72 d500 d500

Dear All, I am facing a problem in FX2n, Infact i am making a totalizer from the flow. everything is fine. but client demands to add some totalizer value to start with totalizer.  the problem is that when i add 50000 value the value of registers stucks. although i am using 32bit float register along with DEADD command for Totalizer. the makes some steady at some place. i dont know why. but i give the totalizer 0 it works fine.  Any Solution regarding this will be help.    Value in the D72 = 0.0003

i am using indusoft web studio for the modbus logging. program runs successfully but after a half day or a day it shows error " error initializing the driver modbu 10.10: invalid serial port "any suggestion will be appreciated.RegardsZubair Ahmed

you can clear the memory after connecting the plc in software .. first use auto check option in " online PLC " then reset the memory

i solved the error. as    in winproladder there is an option " Auto Check" . you should  must click either you know your port or not.  it has resolved my problem as well .

i have a paddle Wheel Floweter of TOkyo Keiso W2000. its frequency is 88 Hz .  Flow Rate  30L/min. i want to connect it with mitsubishi fx3u plc digital input as it is pulse flow meter.    kindly tell me how can i determine its pulses for liters.

hy all. i am having an error while communicating with fatek plc. when i communicate it gives an error. " Com port open fail, plz check if this port is used by other programme when we online the PLC (Fatek/ WinProLadder). kindly Guide me   as it looks like port is already used by another program . and i dont know how to kill that program ..       

further more connection to hmi is to 6 and 9 pin of a db-9 connector   

THANKS guys for your reply..  infact i have manual for my sensor .. and for reference see attachments.  i have done hmi wiring .  i know modbus and its registers for picking values as i am picking values in scada.  its weintek hmi   Data_sheet_VA500_EN.pdf Instruction_Manual_VA_5xx_Modbus_RTU_Slave_Installation.pdf

like what problems share something so that i can give some solutions.

For this purpose read the PID command in FX3u programming manual. there are 26 registers that you should have to known for proportional and Derivative controls for this.. you have to initialize the registers before using the command . for your reference i am attaching the image for it.