Saravanssk, you keep saying to only respond with the correct cable wiring from PLC to PC, you have the correct wiring.
So, if you don’t want to know what else might be wrong, ignore the rest of this.
Some observation per you photo
• When connecting to a MicroLogix the “Device” needs to be set to “SLC-CH0/Micro/PanelView”
• “Auto-Configure” typically doesn’t work when you’re using a USB to serial adaptor.
• If you don’t know how the PLC’s port is configured you can use the “DCOMM” feature which will force all of the com ports to their default setting
o Here is a video that shows you how to do this:
https://www.youtube.com/watch?v=4fkHj6pSsY8
o The default settings will be a baud rate of 19200, Parity: None, Stop bits: 1, Error checking: CRC and Protocol: Full duplex
• When you have the com port at default set RSLinx to match and you should be able to go online.