Thanks Jay Anthony & gtsuport. Is the cable shown in my post is ok? it is CN 226.
Jay Anthony you said Switch 5 is on & Port Settings to 9600, E, 7, 2. So This setting is for CN 226 cable?
What if i use RS232 to USB? Is there different settings for this cable? & By using RS232 to USB, am i able to online Plc & save program file to my PC?