Dear Friends,

I hope you all are doing well !!

I am stuck at a place where I have done n number of things but could not find the solution for it.

I have a S7-1214C PLC, CP 1242-7 V2 communication module, HMI KP700 with some IO modules. Client wants that if at all there is a trip condition there are 5 peoples who will recieve the trip sms on their mobile phone.

Problem is that it's a flameproof panel. So, we are not allowed to open the flameproof panel and punch in the phone numbers of the concerned persons. We are supposed to use external pushbuttons and then punch in the phone numbers.

I have made the program to punch the mobile numbers from external pushbuttons but the PLC is not supporting 10 digit numbers. This PLC does not have the datatype LDInt but it has LReal. But, LReal gives a decimal point at the end which I think cannot be removed (For Ex, 9892929292.0).

I tried Val_Strg to remove that decimal point but does not work.

String concatenation works like a charm but I cannot give a IO field in HMI with data type string as it cannot add or subtract a number from a string (as much as I know)

So, my question is how can i get a 10 digit number in a string tag so that I can put this string as input to the TC_CON block (connect parameter)

Thanks,

Irfan khan

Hello,

can you pls again post clear info what comm block you want use? Sry I can't find TC_CON block in TIA help. Post pls screenshot of your code where is your block call.

Update: pls be kind update your topic name to something depended to your problem, not that question name. If you look to list of topics, your topic name isn't good.

Dear All, Thanks for the replies.

Thank you William for liking my idea and for taking the effort to resolve the issue.

I have come up with a solution and I have attached the logic (pdf) for it.

I know that the logic is a little bit memory consuming but it is working very well.

I am attaching the HMI screenshot so that things becomes more clear.

Please let me know if you want any more clarification. I shall upload the logic somewhere else and PM you the link.

 Dear William,

Please don't mind but could you make the same logic in ladder? 

As I am familiar with ladder only.

Thanks & Regards,

Irfan Khan

William_B

irfaneci

I tried Val_Strg to remove that decimal point but does not work.

Hi Irfran,

I like your idea of using an LREAL. See the attached pictures and description to help you.

The first picture shows how the HMI can be configured to not show the decimal point. I guess you have already done so.

The other picture shows possible code to convert from LREAL to the STRING.The status view shows a simulated PLC so that each computation step is more clear.

**

Based on the example application given earlier - - My guess is that you need a STRING[22].

Keep in mind: VAL_STRG needs 10 digits + a sign >> 11 characters for your case. In my code example the size = 22 can be lowered down to 11 but not less. THIS is what gave you problems.

Next you need to move the string to the left. I think you need to include a "+" in the telephone number. (From reading the documentation.) My code example do make provision to include or exclude the "+".

What are your thoughts on the matter?

Dear colleagues.

I cannot compile the project without user authorization.

What is the password for the example project you mentioned above?

https://support.industry.siemens.com/cs/de/en/view/58638283

Hello clockwise,

username: administrator

password: administrator

Please look at the manual at chapter 5.3 - Commissioning (page 56)

regards
CaOd