Are my IP#'s compatible?
Well, the first thing is you should never use 255 as
any of the octets of an IP address (e.g. your 169.254.
255.1). Nor should you ever use 0 as an
ending octet (e.g. 169.254.
255.
0).
Do I need ECOM BOX in RLL?
Yes. However, this may be a complete nightmare for you especially since it is your
"first go at Modbus TCP." It is certainly not straightforward. It requires a bit of studying for first-time users.
I highly recommend you download the
mduserm.PDF (VIEWMARQ manual) from Automation Direct's website if you haven't already, and turn to page 7-76 and study. This is where it tells you how to do this very thing.
I would recommend, if possible, that instead of using a DL06 w/H0-ECOM100, that you use a Do-more BRX-PLC w/built-in Ethernet port. It is much easier to use with the VIEWMARQ (and faster) than your current setup. This is also covered in the same manual.