looking for hardware and software to monitor rs232 port on a micrologix 1100

edit

As this is a site for an Ethernet/network analyzer tool, it's probably not the best place to ask about serial communications. You might have better luck over at one of the automation sites, like https://www.plcs.net, for instance.

That being said, this has come up before. Lots of good links to point you in the right direction:

https://osqa-ask.wireshark.org/questions/23243/how-do-you-capture-serial-com-communications