Denilson Pegaia

Hi,

It is difficult to build a HSC example, because, despite it is very simple (90% is just HW configuration), each one needs one specific solution that a general sample doesn't cover.

Despite of it, I think that should be nice to give an initial step with a very simple example.

TIPs:

Device configuration

The HSC configuration is defined on the Device Configuration, CPU properties, High seepd Counters

In our example, HSC1 was enabled, for simple counting:

High speed counter (HSC)1:

1- Checked: “Enable this high speed counter”

2- If you will work with A/B encoders, you need to change the property "Operating phase" from ‘single phase’ to ‘AB quadrature phase 1x’ (or 4x).

3 -The hardware inputs box will show where the field signals should be connected.

TIP: With CPU FW4 and STEP 7 V13 it is necessary to adjust (minimise) the input filter of the digital inputs

OB1:

1 - You can read the count value (as Dint) directly from the address showed HSC configuration (CPU properties) in the "IO address" / start address (e.g. starts with 1000).

2 – The call of the CTRL_HSC is not necessary to read the HSC value, however you could use it for change the HSC configuration in PLC RUN mode (by user program).

Reset:

You can define in HW enable an input for reset function. If you need to do a reset from a user program, you could call CTRL_HSC like showed in the network 2.

CTRL_HSC:

The main tip for CTRL_HSC block is to address the HSC by the symbolic name (not direct by a number): it is easier, clearer to understand, and avoid future problems (if you change for a new hardware and the number of HSC changes).

Retentive:

The HSC are not retentive (i.e. it looses your values after a power off/on). Despite of it, there is possible with help of the user program to reload the last read value to a HSC. The FAQ http://support.automation.siemens.com/BR/view/en/41995947shows how to do it.

Can i do this on s7-1200 cpu 1214 ac/dc/rly ? 
i need aplications for length of bags with encoder and servo motor can you explane me how can i wiring encoder on my plc . My encoder work on htl and ttl logic. 

If you can me help please ?

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Split from Sample Program: S7-1200 High Speed Counter (HSC).

t0r3r0ss

 Can i do this on s7-1200 cpu 1214 ac/dc/rly ? 

i need aplications for length of bags with encoder and servo motor can you explane me how can i wiring encoder on my plc . My encoder work on htl and ttl logic. 

If you can me help please ?

With you encoder not working in 24V is the biggest challenge.
I suggest to you to have a look at the add-on signal board (SB) that can handle 5V natively at up to 200kHz speed.

(naughty smile) as you have not provided much information THIS will be all I'll say - except maybe: look at the System Manual of the S7-1200 for details.

Greetings.

I have this encoder WDG-40A-500-AB-pt52 you can find datasheet ond this site http://www.samey.is/_pdf/_wachendorff/Catalogue_Encoder_2006s.pdf

Why i cant working with 24V ? 

Can you explane me?

t0r3r0ss

I have this encoder WDG-40A-500-AB-pt52 you can find datasheet ond this site http://www.samey.is/_pdf/_wachendorff/Catalogue_Encoder_2006s.pdf

Why i cant working with 24V ? 

Can you explane me?

pt52?