Greetings Snide,
I’m afraid that I’ve reached the end of the line on this one ... specifically, I can’t help you if you can’t help yourself ... please take a look at page 4-2 in
this manual for your 1747-ASB adapter (which I’ve recommended before) ... you will see how switches 1 through 6 on DIP SW1 must (I repeat MUST!) be set in order to work with your 1747-SN scanner module and your SLC-5/05 system ... I had to condense the chart to a size which will fit the forum, and I’ve made some highlights below for your reference ...
the 1747-ASB can be used with MANY different types of PLC systems ... but ... with the system that you’re working with, the ONLY valid rack assignments are circled in red ... and there are ONLY four valid combinations of switch settings - as I’ve highlighted in yellow ...
now then ... you’re telling me that your switches are set for a different pattern ... a pattern that WILL NOT work with your hardware ... so what’s wrong? ... here are some wild guesses ... maybe the person (engineer) who originally specified the settings got them wrong ... or maybe the person (installer) who physically set the switches got them wrong ... or maybe the person (draftsman) who drew the switches got them wrong ... or maybe the person (on the phone?) discussing the drawing with you is describing the settings wrong ... or maybe ... or maybe ... or maybe ...
well ... I can tell you one thing ... SOME body is going to have to get all 24 of those little DIP switches set up right before this system starts working ...
now I’m a strong and patient man - but I know when I’m beaten ... I give up on this one ...
after all that we’ve been through already, you should have taken the personal initiative to double-check all of these DIP switch settings before you reposted them ... if you had, then you would have found that they do NOT correlate with your hardware ... more specifically, I shouldn’t have to keep pointing out your typographical errors in one post after another ... I hate to sound brutal, but you shouldn’t be making it so time-consuming for me (and others) to try to help you - especially since we’re trying to help you for free ...
now you’re probably a very nice person ... and I’m afraid that what I’ve said is going to hurt your feelings ... I’m sorry if that happens - because I’m basically a nice person too ...
in closing I’ll make one more offer ... if you want to send me a Private Message with your phone number, then I’ll give you a call Monday morning and try to talk you through some of this ... if you want to go that route, you’ll need to be near the phone from about 9:00 to about noon ... I’ll be in and out Monday morning but I should be able to call sometime during that period ... I don’t mind helping you solve this problem - but right now, I’m all typed out ... please note that we are now in post #26 of this thread - and we’re no closer to a solution than when we first started ... something has to change with the way we’re handling this ...
right now I have my student training lab set up with a spare SLC-5/05, a spare 1747-SN scanner, a spare 1747-ASB adapter, a spare 1746-NI4 module, and enough spare I/O modules to adequately duplicate your system ... the only things that I don’t have available are the 1746sc-INI4i modules - but I doubt that we’ll need those to solve your Block Transfer problem ... and incidentally, the ASB module has to be used on another project soon so it’s only available through Tuesday of next week ... in other words, if this is going to happen, it needs to happen quick ...
anyway ... the stage is set ... now if I could just get an accurate rundown of how you actually want your system to be configured, then I could EASILY! knock out the Block Transfer rungs that you need for this project ... and post them on the forum ... with a nice red bow around them ... in plenty of time for Christmas ...
so that’s my offer ... regardless of whether you take me up on it or not, I sincerely wish you the best of luck ...
PS edit ... make CERTAIN about the addressing mode required for this system ... your latest post shows a 1/2-slot mode selection ... a one-slot mode is much more common ... my best guess is that the on/off settings for the "mode" DIP switches are reversed ... but then that's just a guess ...