Skip to Content

Register Login

Default Header

(header konnte nicht geladen werden)

Navigation

Reading Pulses Problem

Created by: David.D at: 7/27/2012 2:37 AM (1 Replies)

Rating (0)

Thanks 0

2 Entries

7/27/2012 2:37 AM	Rate (0)
David.D Posts: 1 Rating: (0)	Hi everyone, I am new to this forum. I am using the ET200S of the PLC. I am having a problem counting correctly the number of pulses that I am receiving through an input. I have tried using the PLC's input pulses to test the outcome but I am not receiving the same number of pulses as I should be getting. For example, in one minute, I am suppose to get 60 puleses if I send a pulse of 1 per/sec. I am checking for falling and raising edges but one input or pulse increased a count variable that I have placed on the output by more than 10. I did however used a counter to get the correct counts but then I am measuring the count increases at 10 per/sec. The faster the pulse, the higher the error increases. It is like the PLC is not reading correctly the number of pulses. Have anyone incountered this? Any fix at all would help please? Thanks, Dav D.
David.D Posts: 1 Rating: (0)
Suggestion To thank Quote Answer

7/31/2012 2:45 PM	Rate (0)
Cicero Gold Member Joined: 10/10/2005 Last visit: 1/29/2025 Posts: 1940 Rating: (138)	Hello, it is possible that you have an overflow in refer to the limit of counter. See the following examples with counters in the FAQs: http://support.automation.siemens.com/WW/view/de/24536567 http://support.automation.siemens.com/WW/view/de/640451 With best regards Cicero

Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on