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J-4 junper on a allen bradley cpu card?

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birdly

Electrical
Joined
Jan 14, 2003
Messages
12
Location
US
What does the J-4 jumper on an allen bradley
503 cpu card do?
It has 2 posistions 1 for peogram and 1 for
protect.
 
Thank you very much danielmurray, the site you sent
me to helped me very much with other problems.
 
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