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Encoder read error

Created by: syd_b at: 1/6/2012 1:07 AM (7 Replies)

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1/6/2012 1:07 AM	Rate (0)
syd_b Bronze Member Joined: 2/3/2011 Last visit: 9/5/2024 Posts: 348 Rating: (10)	Hi, I have a 313c cpu and I have connected an encoder to channel0. The problem I have I when I do tests without material it works fine, but when it starts with material the reading of pulses starts to oscilate. It is a cutting machine. What can be the problem the oscillation orconfiguration on the encoder. Thanks.

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1/6/2012 1:32 AM	Rate (0)
Chehombing Posts: 98 Rating: (4)	Hi, try configure from Hardware. see attachment, What tipe your counter module.? Cheers. Attachment FM.jpg (125 Downloads)
Chehombing Posts: 98 Rating: (4)
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1/6/2012 5:14 PM	Rate (0)
syd_b Bronze Member Joined: 2/3/2011 Last visit: 9/5/2024 Posts: 348 Rating: (10)	Hi, I´m using the inputs from the 313c that has 2 channels for encoder inputs. I attached the configuration for counting. It could be some programming issue? Thanks Attachment config.JPG (105 Downloads)

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1/6/2012 5:24 PM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (152)	what type of encoder do you use? quadrature AB or pulse/direction?

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1/6/2012 11:30 PM	Rate (0)
syd_b Bronze Member Joined: 2/3/2011 Last visit: 9/5/2024 Posts: 348 Rating: (10)	I´m using an incremental encoder with A and B signals connected to the plc inputs.

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1/7/2012 12:14 PM	Rate (0)
Marko Bursic Platinum Member Joined: 9/8/2009 Last visit: 7/17/2023 Posts: 1410 Rating: (152)	Then you have wrong parameter setting impulso/sentido, I thinkit meansimpulse/direction, its different type of encoder that has two signlals one for counting and other giving direction, it has built-in electronic module that converts quadrature signal to impulse/dir. In your case you need to switch to quadrature AB, this is the widest used encoder in automation. You can find some information on internet about different types of encoders.

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1/9/2012 10:21 AM	Rate (0)
gfbemrah Posts: 6 Rating: (0)	check the cables. Once i lived like that.after i changed cables with new one.and everything was normal. first cable had not any problem.i did not understand but it has just working.
gfbemrah Posts: 6 Rating: (0)
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1/23/2012 7:18 PM	Rate (0)
syd_b Bronze Member Joined: 2/3/2011 Last visit: 9/5/2024 Posts: 348 Rating: (10)	I changed the parameter of reading of encoder from pulse/direction to encoder1x and everything works fine. Thanks for help.
	Last edited by: syd_b at: 1/23/2012 7:19 PM
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