Created Date: November 18,1999

Created by: ericn

I'm trying to create a bilingual display on an OP-420 from a DL-05. What I 've done is set up messages 1-50 as one language (English display), and messages 100-150 for the second language (Spanish display). To toggle between them, I set a bit and use this bit to ADD a value of "100 " to the V-memory location that contains the message number to display. Let's say V2000 is the upper line message, and V2001 is the lower. V2002 contains the "100 " value. When the language toggle bit is on, the output is:

LD V2000, ADD V2002, OUT V2000, LD V2001, ADD V2002, OUT V2001. This is the last line in the program, so it's not being overwritten. The top line message toggles fine, but the bottom line fails to ADD the "100 ". I worked around it by duplicating the display subroutine, modifying the message numbers, and enabling this subroutine when the language toggle is on. Just wondering if anyone had any ideas why my original method didn't work. It's my first time out with the DL-05 (I normally use DL-240s)

Thanks,

Eric Nelson

Created Date: November 19,1999

Created by: Russ

Hi Eric,

That's an interesting problem. I haven't tried the code on an 05 yet, but I can't see any reason why it might behave differently than on a 240. Just out of curiosity, did you try swapping the bottom line and top line calculations? If you did, did the bottom start working and the top stop?

Regards,

Russ O 'Rourke

Created Date: November 19,1999

Created by: ericn

Hi Russ,

Sorry if I inferred that I 've done the same thing on a 240. I haven't. This is my first attempt at bi-lingual with PLC Direct (I 've done it a lot on other brands). Yes, I 've tried making it change the bottom line display ONLY with no luck. It just seemed strange that I can't seem to ADD a value to the bottom message display V-memory location. In reality, I 've got the display mapped to use V3610 as the top line, and V3611 as the bottom line. I don't think that these locations are used for other data in the PLC (like presets for the high-speed counter or something). The system functions fine with my workaround, but I'd just like to figure out why the "easy " method wouldn't work, for my own satisfaction ;o)

Thanks!,

-Eric

Created Date: November 19,1999

Created by: Russ

Eric,

I tried the code you listed in your posting, and it seems to work as expected - when the rung is enabled, an offset value stored in V2002 ( 100 ) is added to and stored in V2000 and V2001. I used a self-resetting stage to ensure this calculation is performed only once - is that how you did it too or did you use a subroutine or PD output contact or a STRPD/STRND differential contact or a self-resetting rung?

Regards,

Russ O 'Rourke

CDS, Inc.

Created Date: November 23,1999

Created by: ericn

Hi again,

Once I find time, I'll invetigate this further. In the meantime, here's the code that "didn't " work:

STR C30 ; Language toggle

LD V3610 ; Top line message

ADD V2030 ; Offset value "100 "

OUT V3610 ; Top line message

LD V3611 ; Bottom line message

ADD V2030 ; Offset value "100 "

OUT V3611 ; Bottom line message

END ; Proof that it's the LAST line of code http://forum1.automationdirect.com/board/wink.gif

I tried different combinations, but no matter what, the bottom line would not "offset ". When I figure it out (and I WILL!), I'll post the solution. As always, it's probably something simple that I overlooked.

-Eric