Time string to double integer

[doannhat0507]

Hi All,
Now i get a problem about converting from Time string to double integer. I used FC37 to convert it but after converting it, DINT value got value 0. (variable: "M_Start_Timestamp" to "M_Start_Timestamp_DINT")
Can somebody help me about that?

p/s: i'm using Simatic S7300 for programming.
Thanks All!!!

 

[microdesigns2000]

fc37 is string conversion. Time is not a string datatype. It is Time datatype or S5Time datatype.

You can use instruction T_Conv to convert from Time datatype to Int datatype. Then convert from Int to Dint if you need.

 

[doannhat0507]

fc37 is string conversion. Time is not a string datatype. It is Time datatype or S5Time datatype.

You can use instruction T_Conv to convert from Time datatype to Int datatype. Then convert from Int to Dint if you need.

Dear,
can u show me where i can get block "T-Conv" in Step7?

 

[microdesigns2000]

https://support.industry.siemens.co...sing-the-data-types-dt-and-dtl?dti=0&lc=en-WW

 

[boneless]

TIME is in the same format as DINT, in ms resolution. So you can just move the TIME into a DINT using a MOVE instruction.

 

[doannhat0507]

TIME is in the same format as DINT, in ms resolution. So you can just move the TIME into a DINT using a MOVE instruction.

Dear,
i know what u mean but in my logic, "M_start_Timestamp" was a String variable (please view attached file).
i tried to convert it but it cant work, can you help me about this?
http://www.mediafire.com/view/69gps2grk4n1ebe/stringtodint.jpg

 

[boneless]

Gotya,

Now I understand why the T_Conv was mentioned. Your string is similar to a DT (date and time) format.

How are you expecting the DINT?

I think you will have to extract every part (Y-M-D-etc) from your string.