[combining DAC outputs]

Would it be safe for the acc59e to combine multiple unipolar DAC outputs together in parallel so as to avoid the expence/ complexity of a switching matrix?

The idea is that normally only one dac channel at a time would be commanded with the others set to zero. I don't want the combined output added just the value of the highest Dac output at any given moment.

[How do I configure Acc-5E JIO bits for output?]

The answer was found in Sina's pdf and associated code

 

"Using ACC-5E I/O through Power PMAC"

 

The only other thing I had to do to configure the gpio ports for output was to set the buffer control bit for the appropriate byte.

 

Where can I find this pdf file?

I'm having the same problem.

I'm sure its in my not setting the buffer chip direction but I can't find the power pmac address for it (acc5e manual only addresses turbo)

[Laser Pulse Control with Power PMAC DSPGATE3]

In design of Power PMAC DSPGATE3, multiple features were specifically added with Laser/PWM control applications in mind. This document briefly covers some of these features and provides sample codes for using them such as:

 

- Pulse Output with Adjustable Frequency and Duty Cycle (PWM)

- Pulse Output with Adjustable Frequency and Duty Cycle using EQU (PWM)

- Burst Pulse Output with Known Count, Frequency and Duty-Cycle

- Equidistance Pulse Output Per Traveled Distance Along the Path

 

I need to do the Equidistance Pulse output per traveled distance along a path using turbo UMAC. Any examples to follow?

Also would it work instead of using position compare on a phantom axis to use the output of an unused acc24e2a axis set up as an open loop stepper motor in follower mode? Could this achieve higher pulse rates?

I'm mostly a hardware guy.

My programming skills are modest.

Examples would help.