501 upload trouble

mcginnis535

Member
Join Date
Oct 2008
Location
woodville
Posts
7
Hello newbie to the plc board



I am trying to upload a program from a new to me machine



(hyd press special built). It's running a 501 with 1k mem



I am able to communicate with the processor (rslinkx works and



I can see the processor name) but a can't



look at or upload the ladder logic. when I try the upload



I get a compiler error and a file open / file corrupt /



or user does not have access error.



PLC is in the run mode and operation good/ok.



This 501 has no key switch on the processor



I have created a file with the same processor and name



but it still will not upload the ladder logic



Any help would be greatly appreciated



Thanks

McGinnis535
 
Do you need the program? you can reset the CPU but you will loose the program...

You should be able to create a new file by using system coms/ then upload
 
I didn't receive a copy of the program with the press

so I don't want to reset the processor. I have a hard copy

but I really do not want to rewrite the ladder if at all possible





Thanks

McGinnis535
 
it will usually prompt on a password. You stated the machine is running so I need to ask what cable are you using, I've seen this on two types of problems bad communications or actual corrupted program have you tried RSwho go online? instead of via the program defaults?
 
it will usually prompt on a password. You stated the machine is running so I need to ask what cable are you using, I've seen this on two types of problems bad communications or actual corrupted program have you tried RSwho go online? instead of via the program defaults?

I didn't get a password prompt



Try the second one down??

I do not have a copy of the program offline



Is there a chance that they installed a password??

There maybe a password but I haven't seen a prompt



I've been using a USB to DH485 converter. I used the setup on a

503 yesterday and all was well.



I will retry the processor and check out the documentation.

it may have been programmed with other than AB software
I think I tried the rswho online. I will try it again


Thanks for he replies

McGinnis535
 
mcginnis535 said:
I've been using a USB to DH485 converter. I used the setup on a

503 yesterday and all was well.

Not that you are... but just incase

You can not use a USB with a 501, you will need a PIC and a real serial port

This is a prodedure that I wrote for our PIC cables but it will/should work with any...

http://www.plctrainer.net/PICDriverAllenBradley.pdf
 
or the 1747-UIC converter for AB if you do not have a serial port

Edit the protocal handshaking for the DH+ does not work well with most standard 485 converters
 
Last edited:
If this is an older, used machine, it may have been programmed with the old AI DOS-based programming software. If so, the attachment lists one of the potential problems that cause this error.
 
Hi There:
Have you checked to see if there is a jumper on the side of the processor that limits future access. Also the processor may have been password protected.
 
I tried my pic and it didn't work on the press
I have an old 501 so I hooked it up with the pic
and it communicated just fine and I was able to upload
the program into a new file.

also I looked at the hard copy documentation and it was generated by rockwell software in 1996.

BTW no jumpers inside


If this is an older, used machine, it may have been programmed with the old AI DOS-based programming software. If so, the attachment lists one of the potential problems that cause this error.
This may solve the problem but I will have to rewrite the logic
and then try your suggestion ,seems like a long shot
but it may come to that

any other suggestions????

Thanks
McGinnis535
 

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