IEC Developer to Q2AS via an A1SJ71UC24-R2

[Colin Carpenter]

I'd like to use an A1SJ71UC24-R2 as a second programming port for a Q2AS plc. I've wired it all up, soldered up the comms cable, set the dip switches but can't get comms. I'm pretty sure that the reason is that IEC Developer V7 only gives me the option of using an A2SJ71QC24-R2, which I think may be different. Has anyone managed to do the above, or am I wasting my time? Thanks.

[panic mode]

that's quite old card but i'm pretty sure you are just facing limitation of the IEC developer. whole point of QnAS CPUs was to reuse all hardware and just upgrade CPU. according to IB_NA_66490-C: "for CPUs other than AnU, AnA model setting is not required since dedicated instructions cannot be used". according to IB_NA_66538-B, "Q2ASCPU, Q2ASHCPU and Q2ACPU cover range of devices"..."range of A2ACPU" according to IB_NA_3511 (page 2-11 System Configuration and applicable functions) you can have up to 6 of those cards on Q2ASCPU etc. Hope this helps.... SH(NA)3511-L 21.15MB PDF Computer Link Module (Com link func_Print Func) Users Manual IB(NA)66583-B 3.73MB PDF AJ71UC24S2 A1SJ71UC24R2S2 A1SJ71UC24R4S2 Users Manual IB(NA)66490-C 227.46KB PDF A1SJ71C24R2 A1SJ71UC24R2 A1SJ71C24PRF A1SJ71UC24PRF Computer Link Module Users Manual (Hardware)

[Colin Carpenter]

Thanks for that .... it looks like it is an IEC Developer issue, although it's a bit scary when you realise that Mitsubishi brought out an A1SJ71QC24-R2, which, when you download the manual, only refers to the QnA range of PLCs .... makes you think that there may be some issues between UC24 and the Q2AS. Incidentally, just to prove a point to myself, I installed the UC24 in a rack with an A1S-S1 and can't even get that to talk through IEC Developer. Reckon that the manuals for the UC24 are about the worst I've ever seen for a Mitsubishi product. The simple one gives clues without going into detail, and the larger only seems to talk about Modbus and other exotica. All I want to do is talk to one Mitsubishi product from another Mitsubishi product using a third Mitsubishi product...... you'd think the manuals would specify how to do the simple things before the difficult things, but I'm afraid not Incidentally, why has the forum started inserting advertising links in posts that I just don't want to be there?

[panic mode]

I think this explains links: http://forums.mrplc.com/index.php?s=&showt...indpost&p=35249 As for software, seams that IEC Developer is developed and tested in Europe. It is hard to see one here, that's for sure. Since it's newer product and in development, it is possible that thing or two don't allways work as expected (see how many things are still not right with non-IEC version, or any other PLC package regardless if Mitsubishi, AB, Siemens or Omron). I think they will have workaround for this anyway. Did you try contacting Tech Support? all serial cards i've been dealing with seam to be pretty much backwards compatible and upgrade path is rather straight forward. maybe this will help: http://forums.mrplc.com/index.php?showtopic=518

[Colin Carpenter]

Ah, that explains the advertising links then ....... I did see the thread and printed off the graphic, made sure I wired the comms cable exactly as you detailed, but still can't get any comms to work. There is a strange reference to CD capable devices in the manual for the UC24, (pin 1 on a 9 pin RS232) which seems to indicate that a bit of software needs to be written if pin 1 is not used, so I tried that and still got nowhere. Wish I knew what the protocols 1-5 meant and which one to use ..... you'd think they might tell us. Tech support in the UK involves phoning a woman at Mitsubishi who then writes down your number and takes it round to one of the techies, who might (repeat might) phone you back if there's an "R" in the month, the phase of the moon is right and it's a Leap Year. There are a couple of good guys who work for the distributors, but they're hard to get hold of as everyone wants to talk to them ...... Ah, well, at least it makes it interesting.