Bug in PTO Max Speed limit

[Sime]

Hello!
I would just like to share the finding here... it might help someone.
There is a bug in PTO FB used with UID-0808THS module.

When defining HS block functionality you set Pulse/Units ratio and Min/Max velocity.
Min/Max Velocity is defined in user units.


In ladder, you have PTO function block (PTO Change Units) where you can change Pulse/Units ratio.

Example of the bug:
- Max velocity of HS Block1 on the photo is set to 300 (200pulses x 300  = 60.000 pulses per second so 60kHz) .
- In ladder PTO Target Velocity set to 300. Request PTO move is sent. PTO will run correct .
- In ladder we use "PTO Change Units" function block and change Pulse/Unit ratio to 201 : 1 
- In ladder PTO Target Velocity set to 300.  Request PTO move is sent. PTO won't start. - Target Velocity Setting did not violate Max velocity setting at HS Block1

After ladder Pulse/Units ratio change (201 : 1) PTO output Frequency (at Target velocity value 300) is 60,3kHz (201pulsesx300) which is higher than default setting in HS block1 (60kHz) - PTO won't start.
If Max Velocity in HS Block1 is adjusted to 302 (200 pulses x 302 = 60.4kHz), PTO will run normally with new pulse ratio 201:1.

Bug : PTO Max Velocity frequency is not updated (internally) when Pulse/Units ratio is changed in ladder FB.
 

[Rivka]

Dear @Sime,

We've opened a ticket on that matter.

We hope to fix it soon

Thanks for pointing this out to us

Best Regards,

Rivka

[Rivka]

Hello,

This issue had been fixed and will appear on next version release.

Best regards,

Rivka