I have a PLC5 in front of me.
Its a 1785-L30B C
On the side it also has stamped: Series C, Firmware Rev. D.
I believe PanelView's are similiar with Series and Firmware levels.
I have 2 new ControlLogix systems that I will be ordering soon.
The hardware costs (Processor, Rack, PS, modules) will be at least $20K for each system.
What I am thinking about doing is picking up a used processor, rack, PS., dhrio, enbt or enet for testing and customer support in my office. I would also like to be able to do this with the CompactLogix platform.
I picked up on ebay a 1756-ENET module, series A, I now realize that there is also a series B out. I am now sure even if you can still buy the ENET modules from AB, they have since went to the ENBT modules.
Another example is the DHRIO modules. In RS5000, its shows 3 possible types 1756-DHRIO/B, C or D. I will have to do some research and find out what is the difference between the different series.
What I have been trying to determine is if there is a list somewhere that insures me that I am buying a fairly newer module and not some older module with outdated rev and firmware levels.
Thanks for all of the responses so far.