Weekly Timers and Simulating

Dear All,

I was wondering,

How can you create a weekly timer to give power in a pule or for a given time frame to be on and then off ,

and if "SIMATIC STEP 7 BASIC V13 SP1" has any way to simulate the program without the actual hardware, like the logo soft v8.0

I am very new to this so please if this sounds like stupid question,please bear with me:D

Thank you In advance 

Le Test !!

Hi!

Have you seen this library:

https://support.industry.siemens.com/cs/document/109479728/library-of-general-functions-for-step-7-(tia-portal)-and-s7-1200-s7-1500?dti=0&lc=en-DE

There is a function called TimerSwitch in it. You need SP1 Upd4 and higher for compatibility.

For simulation you need PLCSIM V13 SP1, it works with S7-1200 FW 4.0 and higher.

For Weekly timers do you need the información of Time of Day my sugestion is the next:

1.- Create a New FC

2.- Define a Local Variabe  with the  data type DTL

3.- Call the instruction RD_SYS_T: Read time-of-day and use your local variable

4.- Now you have information about :

      Year , mount , day ,weekday, hours , minute , second , nanosecond

   Note: Year is data type Uint the rest have data type Usint

5.- Now you can to use a comparator instruction to your Weekly timer

 Dear Kahl , 

Does this 

https://mall.industry.siemens.com/mall/en/WW/Catalog/Product/6ES7822-0AA03-0YA5

Contain the Simulator Or I have to Buy it Separately ? 

Thank you in advance 

Le Test !!

Kahl

Hi!

Have you seen this library:

https://support.industry.siemens.com/cs/document/109479728/library-of-general-functions-for-step-7-(tia-portal)-and-s7-1200-s7-1500?dti=0&lc=en-DE

There is a function called TimerSwitch in it. You need SP1 Upd4 and higher for compatibility.

For simulation you need PLCSIM V13 SP1, it works with S7-1200 FW 4.0 and higher.

 Dear Isoto 

this is a more manual or mathematical way to do it ... but it can work sure , 

Because I am really new to this, I just try to get all the aspects of the software in order so that I can do a nice software to run nicely, and be remotely operated and controlled and all of the above

Thank you In advance

Le Test !! 

lsoto

For Weekly timers do you need the información of Time of Day my sugestion is the next:

1.- Create a New FC

2.- Define a Local Variabe  with the  data type DTL

3.- Call the instruction RD_SYS_T: Read time-of-day and use your local variable

4.- Now you have information about :

      Year , mount , day ,weekday, hours , minute , second , nanosecond

   Note: Year is data type Uint the rest have data type Usint

5.- Now you can to use a comparator instruction to your Weekly timer

Le Test !!

......

6ES7822-0AA03-0YA5

https://mall.industry.siemens.com/mall/en/WW/Catalog/Product/6ES7822-0AA03-0YA5

Contain the Simulator Or I have to Buy it Separately ? 

....

 Hi!

As I know, Step 7 Basic contains also the simulator.

You can start TIA and click on the HELP tab / Installed software .... and then in the lower part of the pop-up click on "Detailed information about installed software" to see what you have.

Hi Le Test

What is your definition of Weekly timer

I understand the next concept

A) You need to start a motor or oven all the monday at 5:00 AM ,

B) You need to Stop a motor or oven all friday at 11:00 PM

C) You need to start or stop device depende of the weekday and the time

If this is your concept of Weekly timer my sugestion work good

But if your concept of Weekly timmer áre the next :

A) You Define a time for example  2 day 8hrs and 23 min and you need to measure this time

Do you need to make your timer with two IEC timer and one counter

Dear Isoto , 

I found a DLL library that had this integrated in one block the weekly timers and yearly timers and e.t.c 

https://support.industry.siemens.com/cs/attachments/78788733/78788733_s7-1200_dtl_timer_v10_en.pdf

here is the PDF , manual , is coded with the old V12 but still I managed to upgrade it , no i need to test it :D if this works out of the box I am in business :D 

Thank you in advance 

Le Test !!

Hi

if You need:

1. a weekly interval (i.e. 7 days apart; regardless of hour): you can use IEC Timer (it covers up to 21ish days)

2. if you want to trigger an event on a specified hour (i.e. monday, 0600hrs):

- read system time and when it is more equal setpoint:

   1. check monday before or at last execution date.
       execute what you wish to do weekly if current date is different

   2. after execution remember the date in a data block

this way you do thing once a week or on first opportunity in given week (i.e. when PLC is OFF

at time of scheduled time)

I did this for data logging in Citect SCADA. Script is below (should be easy to convert to SCL

in S7-1200/1500):

// Function checks if files needs to be moved to C:\OLD_LOGS and makes this happen when needed.
// Files are copied on Monday or first run after last Monday if sustem was not running on Monday
FUNCTION CheckSwapFiles()
INT DateMonday,dd,mm,yy;                        // Date of last Monday
STRING Suffix;                                    // File Name Suffix = "dd_mm_yyyy"

DateMonday = TimeCurrent();                        // Get Current Date. in S7-1200 use SFC to get system time

WHILE (DateWeekDay(DateMonday)<>2) DO            // Check if date points to Monday
DateMonday = DateSub(DateMonday,86400);        // Subtract one day if not
//NOTE: the subtract takes 86400s which is 24hours (one day)
END                                                // While loop gives date of last Monday

dd=DateDay(DateMonday);                            // Day 1..31
mm=DateMonth(DateMonday);                        // Month 1..12
yy=DateYear(DateMonday,1);                        // Year in format yyyy

IF dd<10 THEN
Suffix = "_0"+IntToStr(dd);
ELSE
Suffix = "_"+IntToStr(dd);
END

IF mm<10 THEN
Suffix = Suffix+"_0"+IntToStr(mm);
ELSE
Suffix = Suffix+"_"+IntToStr(mm);
END
Suffix = Suffix+"_"+IntToStr(yy)+".txt";        // Suffix contains "_dd_yy_mmmm.txt"

IF (FileExist("C:\DataLog.txt") AND             // File Rename Done?
NOT FileExist("C:\OLD_LOGS\DataLog"+Suffix)) THEN

CloseLogFiles();                            // Close Log File(s)

IF FileFind("C:\OLD_LOGS",16)="" THEN        // Check if directory exists
Exec("cmd /c mkdir C:\OLD_LOGS");        // Create Directory for Logs
SleepMS(500);                            // Wait for MkDir
END

ErrSet(1);                                    // Prevent fatal error if file deleted

FileRename("C:\DataLog.txt","C:\OLD_LOGS\DataLog"+Suffix); // Rename log file

ErrSet(0);                                    // Resume Error Check

OpenLogFiles();                                // Open / Create / New Log File
END

END

Dear all , 

Things got very complicated very fast :'( , 

Why these people don't just have something similar like in logo 8 , A Weekly timer and that's it ? oufff .. 

I will try to figure it out , Thank you all for the feedback I really appreciate  it :D 

Thank you in advance 

Le Test !!