Re: Query: Protocol & Module Recommendations for 500k-Point Waveform Data Integration into EPICS

[Érico Nogueira Rolim via Tech-talk <tech-talk at aps.anl.gov>]

Hi!

As an answer to both of your questions, I think you could take a look at https:// mdavidsaver.github.io/pscdrv/

I'm a big fan of network protocols due to avoiding custom drivers or complicated hardware interaction, and for enabling decoupling between devices and servers (location, architecture, hardware features, etc). For occasionally reading from a ~4MB device buffer, GigE should be fast enough (1/30 of a second... how often are you planning on transmitting that waveform?).

Cheers,

Érico

On 1/16/26 6:39 AM, lvhh--- via Tech-talk wrote:

Dear all,

We have a custom device generating 500k-point waveform data (float32/float64 arrays) and need to convert it to EPICS PVData for system integration. We seek guidance on two key points:

1.What communication protocol should the custom device support? Given the large waveform size, we prioritize high throughput, low latency, and structured data (to bundle waveform + metadata like timestamps/units). We wonder which standard industrial protocols are suitable? (e.g. VISA, GigE)

2. Which EPICS modules/tools simplify communication?

The data does not require real-time monitoring. Our local device has a cache, and data can be retrieved from the cache to be stored as EPICS PVs.

Any  documentation references are greatly appreciated!

Best regards,

Huihui

---

lvhh at sari.ac.cn

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