# Is PIL deprecated?

**URL:** <https://forum.plexim.com/t/is-pil-deprecated/2694>\
**Category:** PLECS\
**Tags:** pil\
**Created:** [November 12, 2025, 10:18am UTC](https://forum.plexim.com/t/is-pil-deprecated/2694 "2025-11-12T10:18:31Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![yang](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@yang](https://forum.plexim.com/u/yang)\
**Post date:** [November 12, 2025, 10:18am UTC](https://forum.plexim.com/t/is-pil-deprecated/2694/1 "2025-11-12T10:18:31Z")

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Hi there, I’m trying to do PIL simulation with my 280039 launch pad. But I found that in the newest version (4.9.8), the PIL block is missing from both the library browser and the documentation. In the old version (4.7.3), the PIL block was present. Is PIL deprecated now? What is the alternative?

By the way, I’m using student license, is this the reason?

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**Author:** ![Bryan\_Lieblick](https://dub1.discourse-cdn.com/flex006/user_avatar/forum.plexim.com/bryan_lieblick/32/10_2.png) [@Bryan\_Lieblick](https://forum.plexim.com/u/Bryan_Lieblick)\
**Post date:** [November 12, 2025, 3:42pm UTC](https://forum.plexim.com/t/is-pil-deprecated/2694/2 "2025-11-12T15:42:15Z")

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PLECS PIL functionality as it existed in PLECS 4.7 has been deprecated.

You have a few options:

1. Use the PLECS Coder to generate code directly from your simulation model.
2. Use a software in the loop (SIL) based approach. This is useful for testing key algorithm development with the same code that can run on your MCU, albeit compiled for your PC instead of the MCU. The limitations are that it cannot use native libraries compiled for your target and you must develop your own behavioral peripheral models (or use the peripheral models from a Target Support Package for offline simulation).
3. Use an older version of PLECS.

Note for commercial users with a legacy PIL license there is still some limited support, available via [support@plexim.com](mailto:support@plexim.com).

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**Author:** ![yang](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@yang](https://forum.plexim.com/u/yang)\
**Post date:** [November 12, 2025, 3:44pm UTC](https://forum.plexim.com/t/is-pil-deprecated/2694/3 "2025-11-12T15:44:04Z")

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Thanks, and sad to hear this message 😢

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**Author:** ![yang](https://avatars.discourse-cdn.com/v4/letter/y/77aa72/32.png) [@yang](https://forum.plexim.com/u/yang)\
**Post date:** [December 12, 2025, 11:55am UTC](https://forum.plexim.com/t/is-pil-deprecated/2694/4 "2025-12-12T11:55:50Z")

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Hi Bryan, I was trying the legacy PIL these days because I found it is very useful. But I met the error message :

" In untitled/PIL: Cannot configure target Target: We can only register 16 override probes"

Is it the designed behavior? How can I use more override probes? That’s the only question I have, could you please answer it here?

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**Author:** ![Bryan\_Lieblick](https://dub1.discourse-cdn.com/flex006/user_avatar/forum.plexim.com/bryan_lieblick/32/10_2.png) [@Bryan\_Lieblick](https://forum.plexim.com/u/Bryan_Lieblick)\
**Post date:** [December 15, 2025, 2:44pm UTC](https://forum.plexim.com/t/is-pil-deprecated/2694/5 "2025-12-15T14:44:22Z")

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Hello Yang, The message indicates the designed behavior.