Allen Bradley BASIC Modules

bmw_apprentice

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• Sep 25, 2008

• #1

Hi all,

I have been given the task of surveying all of the 'BASIC' modules that we are using around the factory. The only problem is...i dont know what one is. I have been shown what one looks like but id like to know a bit more about them. I believe that the ones we use have a program that deals with the communications to the Eurotherm temperature controllers that we use.
I hope this makes sense. I havent really been given that much information and i havent had much luck with the search engines.

Also is it possible to get a backup copy of the program from within these units?

Cheers

 

fuzzy logic

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• Sep 25, 2008

• #2

On which PLC platforms do you search ?

PLC-5

SLC-500

Rockwell Automation Literature Here search for keyword Basic Module

Hope this helps....

- [font=comic sans ms,sans-serif]fuzzy logic[/font]

 

Brownhat

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• Sep 25, 2008

• #3

If you are talking about the 1771-DB, here is a link to the manual.

http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1771-um113_-en-p.pdf

I've "uploaded" a program from one of these once using windows hyperterminal and a serial cable. Here is a link to the instructions I used.

http://rockwellautomation.custhelp.com/cgi-bin/rockwellautomation.cfg/php/enduser/std_adp.php?p_faqid=16251&p_created=887864400&p_sid=hmeo3Lej&p_accessibility=0&p_redirect=&p_lva=16251&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9NSw1JnBfcHJvZHM9MCZwX2NhdHM9MCZwX3B2PSZwX2N2PSZwX3NlYXJjaF90eXBlPWFuc3dlcnMuc2VhcmNoX25sJnBfcGFnZT0xJnBfc2VhcmNoX3RleHQ9aHlwZXJ0ZXJtaW5hbCAxNzcxLWRi&p_li=&p_topview=1

 

sammie

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• Sep 25, 2008

• #4

If it is SLC 500 download this publication from the AB site.

1746 bas-um004_-en-p.pdf

On your other question you can upload the program using hyperterminal. You need a communication cable, (you can use a null modem cable) and you have to set jumper 4 to program mode.

 

bmw_apprentice

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• Sep 25, 2008

• #5

the second link in your post needs me to log in. is there any chance of getting a copy of the PDF or something similar?
That would be extremely helpful!

Cheers for all the help. i clearly need to brush up on my searching skills.

Cheers.

 

sammie

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• Sep 25, 2008

• #6

The file is too large to send, sorry

 

fuzzy logic

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• Sep 25, 2008

• #7

Just to clear it.... my previous post contains the links that others have indicated later....

Mouse over PLC Names....

The other document you mentioned, needs a valid TechConnect support contract with Rockwell to login and view ...

- [font=comic sans ms,sans-serif]fuzzy logic[/font]

 

bmw_apprentice

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• Sep 25, 2008

• #8

Perfect. Thanks a lot for all the help guys. i will report back when ive read through this information and had a look for some of our units.;

Cheers

 

bmw_apprentice

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• Sep 26, 2008

• #9

Now i understand a little more about these units i have another question.

Is it possible to get the C code embedded into them...out again. We are vunerable from these units falling over and we have no backups of this C code. Anyone got any suggestions?

 

sammie

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• Sep 26, 2008

• #10

I'm not sure what you mean by "embedding the C code into them" The program is battery backed up in the module. If you are losing programs you might want to change the battery.

 

mordred

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• Sep 26, 2008

• #11

Don't you mean Basic code?? and am I correct you widh to backup that basic code?

 

bmw_apprentice

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• Sep 26, 2008

• #12

There are compiled C code modules loaded into the BASIC modules. We have no backups of these programs and desperately need to get hold of them.
The problem is not that we are losing programs but if the unit is to fall over due to a failure in the hardware we have no backups and so will have to start from scratch! not a good situation. i hope i have explained that a little better.

Cheers.

 

sammie

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• Sep 26, 2008

• #13

OK, misunderstood. If you want to have a copy of the programs, which by all means you should, then you can upload the program by using Hyperterminal, save it as a text file, ie notepad or wordpad.
(use copy/paste.) Now you cannot go online like a PLC. you will have to shut down, remove the module, change jumper 4 to program mode, reinstall module,power back up. Do you have a cable? If so attach it to port 1. When you start Hypreterminal the program will upload. The manual explains all this in detail. Be sure to power back down and change the jumper back to run after you have the program saved on the laptop.

Hope this helps

 

sammie

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• Sep 26, 2008

• #14

BMW

One more thing after you have established communication with the module, type the word "list" at the prompt (without the quotes) then enter. This will upload the program.

 

robertmee

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• Sep 26, 2008

• #15

Are you sure that 1771-DBs are all you have? There are also 1771-DMC co-processors that can run BASIC, Compiled C and even assembler. I don't think you would be able to extract the Compiled C routines from these. You would need the original source code.