hi,

Can someone help me with some advice, or a chematic cable  for 6ES7 635-OAAOO-6CAO,  only if I can do it myself  this  cable , to connect the four  (or two ) I / O modules with c 635 touch screen.

And  if  is a function in step 7.5, to program the CPU 316-2DP, so we need every day to switch a relay exactly when the sun rises, so every day I want to have a relay to engage it automatic in a different time.

Thanks for the reply .

Hi mugurelgi.

Maybe you find what your searching in the manual of the C 635:

https://support.industry.siemens.com/cs/ww/en/view/11559312

For your relay: Do you need a variable time or do you have a sensor for beginning daylight?

I think a sensor is easy to handle,

time you need exact time (time synchronization) and to calculate the new time.

For this you can use standard modules.

Regards, JRB28

Thank you for your quick response .

I read manual , and there I found only  the cable's name 6ES7635-0AA00-6CA0 , not the cable scheme .

For the second question

Friday  March 20 the sun rises at 6:58:06 , and March 21 at 6:56:32 .

How can I make the plc work to have a relay connected every time just at the sun rises ? And this every day of the year ?

How can I use step 7.5 and where I must put the time's list of sunrise sunlight?

Is something about astrology ......

Thanks.

Hi mugurelgi.

First, the cable to the extension rack is S7-300 I/O bus.

Your time problem could be solved as follows:

You need actual time and calculated set value for each day.

Then you compare the total time >= the set time, this sets a flag which initiates your action, feedback or time elapsed resets the flag. The the set point time must be changed to next activation time (e.g. +2 min until 06/21 then -2 min).

Hope I could have helped you, regards

JRB28

mugurelgi

 

For the second question

Friday  March 20 the sun rises at 6:58:06 , and March 21 at 6:56:32 .

How can I make the plc work to have a relay connected every time just at the sun rises ? And this every day of the year ?

How can I use step 7.5 and where I must put the time's list of sunrise sunlight?

Is something about astrology ......

Thanks.

 Hello mugurelgi,

Have a look the Oscat library there should be something like Sunrise

www.oscat.de

or you can calculate it by yourself look here