Texas ascii message card

jed

Member
Join Date
Jul 2006
Location
Leeds
Posts
22
I need to modify a texas PLC which uses an ascii message card (500-5022)to send messages to an Allen Bradley DL10 message display. I think the ascii card needs programming as there are two ports on it and there are no rungs in the PLC code that look like they are ascii. I have the Tisoft 6.2.2 programming software but this does not seem to include anything for programming the ascii card, can anyone help? Is there a programming manual available and what software do I need?
 
Sorry, Jed...

I just don't have it at hand right now.

I'll see what I can do... if the others that do TI don't jump in first.
 
Hi Jed

If memory serves me the PLC CPU was a passive element in this ASCII Output Module's operation. You had to use specific module configuration software to get it working. And I don't ever remember seeing this config s/w available for a PC, not even under DOS. The only stuff I ever saw was for the TI VPU-200 programming unit.

There were a couple of stages to configuring the module. First of all was to set up the actual message texts themselves, complete with any embedded memory addresses from the CPU. Then there was identifying the trigger condition (a bit in the CPU) that would cause any given message to be output, and a feedback bit from the module to the CPU to say the message had been done.

The module then just spent all its time monitoring the state of the trigger bits in the CPU. If any one went high, the module would twitch, output the appropriate message, and then write the confirmation bit back to the CPU.

That's my total info I'm afraid - as I re-read this I doubt if any of it has been much use!

Regards

Ken
 
Hello Ken
Thanks for the quick reply.
Your reply has been of use as you have confirmed my suspicions.
This is the first time I have used this web site.

Jed
 

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