encoder --> s7-1200

[Jirrr]

The CPU stores the current value of each HSC in an input (I) address...
HSC1 - ID1000,HCS2 - ID1004......

In HSC configuration You can generate interuption for these events - CV=PV: 6 max.
or Direction changed: 6 max. or External reset: 6 max.,
But read it again....it is writen there and more You must read about interuptions as well.

 

[sordfich]

yea i just cant find out how to get the output out of the HCS and into the acual program. anyone know how?

greetz sord

 

[Jirrr]

IF "ID1000" = 180 THEN "Q.0.0" (*for exampe*) := true;
END_IF;

or set output or whatever You want to do in interrup OB You generated before...

 

[sordfich]

aha ok but thats in code line how do i get this to work in LAD?

PS: working at a company new to all this and where all learning about this here right now dont mind our stupidness XD

greetz sordfich

 

[Jirrr]

Use comparator but better will be to put Your code into interruption OB...

 

[sordfich]

yes and my question has been for about 3 posts now HOW i do that XD not with what or why just HOW XD

so how do i get:

IF "ID1000" = 180 THEN "Q.0.0" (*for exampe*) := true;
END_IF;

this into a LAD and working what kinda function do i need for a S7-1200 in step 7?

greetz sord

 

[sunilpawar333]

Hello ,

Basically encoder will give u pulses for one rotation say 360 pulses for 1 rotation then you calculate how much is the displacement occur in 1 rotation.say 5 mm then 360 pul = 5 mm

ok
now you want displacemrnt of 40mm then calculate and

in high speed compare inst give that pulses .please see format of high spd compare inst for details.

 

[sordfich]

sorry to say sunil but i know what you are saying i am asking for the FUNCTION in STEP 7 i need to use to get the ID1000 to work.

greetz sord

 

[Jirrr]

Compararor operations --- for examle Cmp== Equal then compare ID1000 to some value...but First of all You must enable Your counter in Cpu hardware configuration,choose a mode of counter and so on...if You want to use interuruptions generate them... Watch table can be used to monitor HSC...

 

[sordfich]

ok i have the hcs enabled and everything set up in my program i have a comp>= to compare the id1000 to 1 but i am getting no response from the counter and i cant check its counting value in anywhere anyone have any tips?

edit: colegeus just showed me that you can monitor the hcs and it isent moving.

greetz sord

 

[Jirrr]

To explain it simply...You do not need any program to monitor HSC...Use Watch table with ID1000 /HSC1/ , display format DEC signed,monitor/go online/,put some pulses on Input or inputs You see in configuration/do need to connect incremental,use any pushbutton/.....by the way,I hope You put the configuration in Your CPU...You have choosen right type of HSC and You connect incremental with right outputs type....

 

[sordfich]

yea i have the right outputs from the encoder its just that the counter isent moving i am geusing its just something random i forgot just gonna browse the program for a while and see if i can get any flaws. thx for the help btw.

greetz sord

 

[sordfich]

hi i think i found a fault.

the HCS is giving of the 80A1 fault code. siemens's book of evil tells me that the hcs identifier does not adress a hcs but what dus this mean and how do i solve it?

greetz sord

 

[tim2]

I think you get this if you don't convert the hardware identifier to hex.

In the HSC Properties you have a hardware identifier, for example, I have one that's 262.

On the CTRL_HSC instruction's HSC pin I have W#16#106. The 106 is just the hex value for a decimal 262.

For the start address of ID1000, if you want to see it in the program, just use a move command. Put ID1000 into the left hand side and just use a currently unused memory double word (i.e. MD100)on the other side of the move command. You'll be able to see the output of the HSC when you monitor the block.

 

[sordfich]

ok yea ive got everything set up right now but i am not seeing a counting value it stays on 0 whatever i do with the encoder. forwards backwards dusent matter. all the id's avalible for this HCS are staying on 0 (ID1000-ID1003).
anyone have any idea what this can be. and why are these things so dificult to set up? arent there far more easy ways?

greetz sordfich

edit: if anyone has a sample program for an incremental encoder i would love to see it.