@JoelHaggar @phildunlap @mihairosu @przemom thanks for you all.. I could establish communication between raspberry pi and PLC using raspberry pi GPIO pins and MAX232 board after lot of efforts. now mango can detect node. i had to change baud rate , parity of PLC as compatible with Raspberry pi.
now everything seems fine. but still i don't know about system reliability.
Thank you

@phildunlap @JoelHaggar there is no any nodes found even it is goes to 100%

@phildunlap I can't detect Nodes when i run mango in raspberry pi. i think it is occurred due to problem of usb serial communication. because when i use that cable for my laptop i had to install usb drivers manually.

I'm doing project using mango, raspberry pi and PLC .My mango software is running on raspberry pi 3 model B computer. PLC is connected to raspberry using USB serial cable. I access raspberry pi using Putty software which is running on my laptop.(Rsapberry pi is connected to my laptop through router). when i run mango on raspberry pi it is working properly. but when I scan node using Mango interface (I accessed mango interface by using ip and port ) there is no any node detected. (but when i run mango on my laptop it is working properly and Mango can detect nodes).
there is three ports are automatically detected by mango when it run on raspberry pi. they are /dev/ttyUSB0 , /dev/ttyAMA0 and /dev/ttyS0.

can anyone help me ?

Thank you

Solved.. Thank you all

is it possible to host my SCADA system in 24 hours online server ? (ex:- web site) . if it is possible can I monitor and control my SCADA system via internet browser ?

Thank you all. so now i know the problem.. I will try to overcome it.

@JoelHaggar yes i can access mango in local network. i want to access it in globally. but i mean i want access mango via internet. not via wi-fi . i mean can you access my graphical interface by using my ip and port ?

@JoelHaggar yes i changed port to 8082. I use dongle to connect to internet . therefore i didn't have static ip . is it problem? because i have free version of mango. i think it will support only for 3 ip addresses. or is i need to do port forwarding ?

I'm engineering undergraduate. I'm doing project as design and implementation of web browser based SCADA system for sluice gate. I have used mango automation software for my project.I have done following things so far

1. I have established communication between PLC and mango automation software (I can read and write memory coil of PLC using mango software. but still couldn't read analog signals )
2. I have created graphical interface using graphical view module
   3 I can read and write memory coils of PLC using graphical interface at the moment.
   so now i want to access my graphical interface from another computer web browser via internet. I tried this with my Ipv4 address and port 8082(mango software port). but I couldn't access. how to do that ?is there any special module ? or I want to connect mango server or any other method?