Please excuse my rant
I did not make those statements to be derogatory to anyone associated with GE, it is just a pet peeve that any PLC maker has a support database with a section for a legacy product but will not include a manual.
I may be a little upset with GE right now because I had to call tech support Friday and they have yet to return my call. I resolved the issue though and closed it.
The sad part is that although I have worked with numerous AB plcs I have actually programmed more GE, AD, and Siemens products. Terry, I assume by TI you are refering to the 505, because many of them were relabeled Koyo; which is slightly different..IMHO. I wish I could find my Softshop software and manuals but have not worked with it in 5 years or so.
The only reason I mentioned the pricing thing is that every once in a while it gets stated that a 90-30 system could be obtained for 10% of the cost of an AB system. I may be wrong but I equate the 90-30 with an SLC 500 and I have never been able to obtain components with that much of a price differential between them. There have been differences because of company relationships with suppliers where a multiplier is involved but I have never seen anyone get 70-80% off of retail. As an example the last time I had to buy RSL500 I also purchased VersaPro, VP was about $300 less but IMO it is not all that great a programming package. It got the job done though.
At this time I have RSL500, VersaPro, Simatic S7, DirectSoft32, and more that I work with. I find RSL the easiest to understand and work with for some reason that I can not explain.