Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

Variable Time Value Timer

Created by: Humble at: 4/7/2012 12:20 AM (23 Replies)

Rating (0)

Thanks 1

Result pages:: |; 1 | 2 | 3; |

24 Entries

Entries per page: 10 | 20 | all

4/7/2012 12:20 AM	Rate (0)
Humble Posts: 8 Rating: (0)	I would like to configure a pulse timer which would not have a preset time value rather the value is fed from another control system through an analog output - analog input hardware connection. The AO will reside in other control system, then a 2-wire signal cable will be connected to a S7-300 PLC AI channel. How can I transform the incoming value into a S5 time format and feed in to TV input of a pulse timer?
Humble Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

4/7/2012 5:26 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Humble I would like to configure a pulse timer which would not have a preset time value rather the value is fed from another control system through an analog output - analog input hardware connection. The AO will reside in other control system, then a 2-wire signal cable will be connected to a S7-300 PLC AI channel. How can I transform the incoming value into a S5 time format and feed in to TV input of a pulse timer? Hello , One way, to scale the analog signal to values you want(Result as Real) and check the result to represent "second". Round this value and Multiply this "double integer" value by 1000. Then feed this value to FC40 as shown in attachment Best regards, Hamid Hosseini Attachment convert.zip (1057 Downloads)
	Demo Channel on Youtube
Suggestion To thank Quote Answer

4/11/2012 8:53 PM	Rate (0)
Humble Posts: 8 Rating: (0)	What if I do not use S5 time format rather IEC time format, because my time value will go above 3 hours.
Humble Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

4/12/2012 6:27 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Humble What if I do not use S5 time format rather IEC time format, because my time value will go above 3 hours. Hello again, This is the new scenario: Your converted value "MD100" shoud be converted to TIME data type to be used in IEC timers.In this case, you may remove FC40 in previous solution and simply: [code] L MD100 RND L L#1000 *D T MD200 //PT for e.g SFB5[/code] Best regards, Hamid Hosseini
	Last edited by: hdhosseini at: 4/12/2012 6:29 AM Demo Channel on Youtube
Suggestion To thank Quote Answer

4/17/2012 1:59 AM	Rate (0)
Humble Posts: 8 Rating: (0)	Thanks hdhosseini. I am a novice on this kind of complicated programming. I did work on your advice and coded the software. Could you check the attachment? At some places I could see the addresses showing up in other places the # text showing up. I must be doing something wrong. I did not know how to convert MD 230 to #TIMWRD (a time data type) If you see too many corrections to be made then you can make comment on the attachment and reattach it. Also I need to send back the elapsed time through an AO-AI hardware link, which I am pretty sure I need to convert the time format back to double word. Attachment FC51.pdf (797 Downloads)
Humble Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

4/17/2012 8:12 AM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Hello, Your NW2 is not correct. Should be like this: L MD 220 // this is a real RND // make DI off it L L#1000 //load long int(DI) 1000 *D // multiply T MD 230 // transfer to your Time value Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
Suggestion To thank Quote Answer

4/17/2012 4:11 PM	Rate (0)
Humble Posts: 8 Rating: (0)	Thank you Marcjan for your reply. But that was not my question. mdhossenni had given me the tip on rounding off the real number. But that is part of the fine tuning which I can do later. My question was on thewhole program structure. The KNKD input I just put MW 200 to get out of it, otherwise it wont save. So, I need to put some values in MW 200. How is it done? Then converting the elapsed time #elaptim in to a real number so that that can be sent through AO module. What block will convert the data format? Or, do Ineed to convert at all? What FC function block need to be chosen for a 4..20ma AO signal?
Humble Posts: 8 Rating: (0)
Suggestion To thank Quote Answer

4/17/2012 5:50 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Humble Thank you Marcjan for your reply. But that was not my question. mdhossenni had given me the tip on rounding off the real number. But that is part of the fine tuning which I can do later. My question was on thewhole program structure. The KNKD input I just put MW 200 to get out of it, otherwise it wont save. So, I need to put some values in MW 200. How is it done? Then converting the elapsed time #elaptim in to a real number so that that can be sent through AO module. What block will convert the data format? Or, do Ineed to convert at all? What FC function block need to be chosen for a 4..20ma AO signal? Hello, This is what you want,Sorry it is in STL but i try to convert it to LAD. [code] L MD 100 RND L L#1000 *D T MD 200 //PT for e.g SFB5 CALL "TOF" , DB5 IN:=I0.0 PT:=MD200 Q :=Q0.0 ET:=MD204 L MD 204 DTR L 1.000000e+003 /R T MD 208 CALL "UNSCALE" IN :=MD208 HI_LIM :=MD100 LO_LIM :=0.000000e+000 BIPOLAR:=FALSE RET_VAL:=#ret OUT :=MW212 // to channel output L MW 212 T QW 212 [/code] Best regards, Hamid Hosseini Attachment 1.zip (535 Downloads)
	Last edited by: hdhosseini at: 4/17/2012 6:09 PM //file uploaded Demo Channel on Youtube
Suggestion To thank Quote Answer

4/17/2012 6:17 PM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Hello, Complete thing in fbd attached, another proof stl works faster Regards, Macjan Attachment FC1-forum.pdf (822 Downloads)
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users hdhosseini

4/17/2012 6:34 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 10/26/2024 Posts: 6852 Rating: (1365)	Marcjan Hello, Complete thing in fbd attached, another proof stl works faster Regards, Macjan Hello Marcjan, STL is fast because you type all you want in a Network.You can access SFBs ,just by typing. It is not necessary to search for instructions in the program elements,They are coming to your mind as you brainstorm. Best regards, Hamid Hosseini
	Demo Channel on Youtube
Suggestion To thank Quote Answer

|

Share this page:

Share this page on...

Follow us on