Zubair Ahmed

hi there. .. i am new to plc programming.. Right now i am having problem related to communication between hmi and plc.. i have HMI WEintek 6070ip and plc mitsubishi FX2n.. i have written a program in gx developer . and communicate it with EASY Builder for HMI. so for now plc is communicating with my program written for hmi on pc. but when i downlaod to hmi and connect plc cable to hmi then hmi shows no plc communication. i am having a problem for communication between hmi and plc. any help will be a life saver. thanks in advance

HI all.  Am in some kind of trouble.. i have a sensor which has modbus RTU 485 . i want to connect it directly on weintek HMI ..    kindly help me out.. 

Hi there .. i am new to plc... i have flow rate in m3/h and i want total flow or totalizer ... what is the formula for that and how can i implement it in gx developer. any kind of help will be a life saver.

Hello all ... i am a new plc user.. i am using D500 for taking value as it is a latched register.  i am taking value for a flow meter. i have two questions. 1. how totalizer is calculated from flow rate as my flow rate is in m3/h. 2. the value of register is gone upto 32000 approximately... i want that this value to go on.. i mean how 32 bit register is declared in plc .. a

EVERY TIME when i change my ladder logic program then this message appears .. what is this mean

i have pressed f2 but problem still exists

any idea about totalflow  

Thanks friend.. you have provided me a lot of help.. you are true life saver.

what is the differnce between 32 bit signed and unasigned number... also the value according to your ladder diagram is signed or unasigned stored in d500  

OK.. JUST FOR knowledge.. 32bit register can store value upto 2(power32) right?  

add d400 d500 d500...  i am making d500 as a total flow that has been read by flow meter. .so d500 should store a alot value.. how can i do that.. i mean d500 as 32bit

you cleared alot .. but i want to know one thing. my values in register in case of total .. for example if we add d10 d12 d12 then d12has total values... when if we add and add .. then i want d12 has to stored more value.. will a 32 bit operation work for me or not..

according to transmitter output i have taken raw value for analog .. the raw or digital value then i compare and insert all values for transmitter to register. i have just limitation to over flow.. when i use d500 as it is a 16bit register.. i just want to use 32 bit register.. and dont know procedure.. also help me out to find totalizer..

ANALOG INPUT 4-20mA

THANKS GAMBIT FOR all the help.. problem is solved . . as weintek is on rs232 while plc port is rs422.  sorry for your suffer.. and thanks for help...

system comport setting

this is my plc cable layout

one more thing i have noticed that on HMI serial port db9 connector it has written over it( com 1 rs232 , com2 rs485)   while on plc port it has writter rs422... what is this means

my laptop has com port 1... my cable is 9pin to plc connector .. when i connect easybuilder to hmi .. it connects and download the program.. same as when i connect plc to gx developer it connects and download the program.. also online simulation in easybuilder it shows plc data.. but when i connect hmi and plc to each other without plc.. then it shows no plc response.  

i am not getting it.. kindly tell me in detail for life saving... :(

i am not using FX2n-232-bd card  

here is on gx developer

here is my hmi configuration for plc

i am connected to the cpu via rs232 (db9 connector)