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bl4s200 digital input

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I am using bl4s200. I try to use the contact from a relay to bring digital input to my bl4s200. The digital input is in J1, and I set JP1 to 5-6 (pull down to 0V). I am able to engage relay and reading is good. but when I degage relay, my program is frozen. Anybody know what is going? Even I use 5VDC, I have the same problem. the connection is followed:

DIO ---> one terminal of contact ---->another terminal of contact --> +12VDC.
asked Jan 6, 2015 in Rabbit Software by yang New to the Community (3 points)

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2 Answers

0 votes
Where is it freezing in your program? Can you attach the code to this question?
answered Jan 7, 2015 by trooper2 Veteran of the Digi Community (589 points)
0 votes
What version of Dynamic C are you using?
answered Jan 7, 2015 by MargaretK Veteran of the Digi Community (545 points)