How to access bit of word S7-1200

I am trying to write a function for S7-1200 CPU1214.

There is Inout Word type parameter of function and I want to use the bits of this word wişth contact and coils.

It can access the bits in S7-200 by L1.3 but in S7-1200 this syntax gives an error.

Please help me about that.
Thanks in advance.

Kind Regards.

hmm

I don't know the 1200 CPU's, but I guess they are similar to S7-300 CPU'S ?
If so, then try:
Your word is the In Out parameter.
Tempword is a declared word in the temp area of the function.
Q0.0 will be high when bit 1.3 in Yourword is high.

An other method is filtering:

L #Yourword
L #0000000000001000
AW
= Q0.0


These are untested pieces of code, I'm just thinking what's possible in an S7-300 CPU.


Regards,
Gerry

outofservis said:

I am trying to write a function for S7-1200 CPU1214.

There is Inout Word type parameter of function and I want to use the bits of this word wişth contact and coils.

It can access the bits in S7-200 by L1.3 but in S7-1200 this syntax gives an error.

Please help me about that.
Thanks in advance.

Kind Regards.

Click to expand...

Combo, no stl on s7-1200. Also no SCL. Only LAD and FBD.

You can do it in addressing in the 1200

I have done it

Will have a look, cant remember what i did and i have had too much red wine to focus tonight ;-)

Unfamiliar with S7-1200 but move the word to a MW and then use the individual bits of the MW for your contacts/coils.

The manual states that local data can only be referenced symbolically.

Omg

Oh My God,

I never want to use 1200 then. Even a 200 PLC has IL.
Why they sell PLC's that only can be programmed in LAD or FBD ?
U even need to buy new software...
These are only good for extreme small applications then ?

In a recent project I need to control 20 valves. I'm doing this with an ET200S (IM151-8) CPU and Burkert 3/2 valves.
The panel is a basic panel, normally used together with the S7-1200 I think. But they work on other Siemens PLC's too. They only have 256 tags, no archiving, but good for the job.

I prefer ET200S CPU's. No new software, STL, SCL and graph, all possible...

Thanks guys for all your help.
It's done by moving local word to global word.

an example please...

504bloke said:

You can do it in addressing in the 1200

I have done it

Will have a look, cant remember what i did and i have had too much red wine to focus tonight ;-)

Click to expand...

Hello there .... I am completely new to this PLC stuff.. !!!..
I have finally built up three "count up" counters in my S7-1200 system..
Now how - do I read and display the values of the CV registers, or for that matter output them through a RS232 comms link....
...WHEN THERE IS NO SCL..???....

Kindest Regards
Cardac (Spencer)....