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gijzelaerr merged 1 commit into from
Oct 13, 2026
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docs: add tested and verified hardware section #947

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6 changes: 6 additions & 0 deletions CHANGES.md
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Expand Up @@ -44,6 +44,12 @@ Unreleased
block (method `0x12`) that real engineering tools send; both previously used the header of a request without data
and an 8-byte parameter block (#942).

### Documentation

* Add a "Tested and Verified Hardware" section to the PLC support matrix, listing the CPUs, firmware versions and
python-snap7 versions the real-PLC acceptance suite has passed on (S7-1200 CPU 1212C V4.7.3, S7-1500 CPU 1511F-1 PN
V2.9.7). (#947)

3.2.1
-----

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43 changes: 43 additions & 0 deletions doc/plc-support.rst
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Expand Up @@ -52,6 +52,49 @@ Supported PLCs
- Full
- Use the :class:`~snap7.logo.Logo` class.

Tested and Verified Hardware
----------------------------

The table lists real CPUs the :doc:`real-plc-testing` acceptance suite has been
run against, with the firmware and python-snap7 version used. Every run reached
the CPU over the classic S7 protocol with PUT/GET enabled and non-optimized
fixture data blocks. A pass means the 13 acceptance scenarios succeeded: five
read-only smoke scenarios (session, canonical fixture read, multi-read,
reconnect, repeated operations) and eight scratch-write round trips (INT, REAL,
BYTE, WORD, DWORD, DINT, CHAR, BOOL), each restored and read back.

.. list-table::
:header-rows: 1
:widths: 20 12 12 14 12 30

* - CPU
- Firmware
- Result
- python-snap7
- Date
- Report
* - S7-1200 CPU 1212C (``6ES7 212-1BE40-0XB0``)
- V4.7.3
- 13/13 pass
- 3.2.1
- 2026-10-04
- `#919 <https://github.com/gijzelaerr/python-snap7/issues/919>`_
(rerun of `#907 <https://github.com/gijzelaerr/python-snap7/issues/907>`_)
* - S7-1500 CPU 1511F-1 PN (fail-safe)
- V2.9.7
- 13/13 pass
- 3.2.0
- 2026-10-01
- `#909 <https://github.com/gijzelaerr/python-snap7/issues/909>`_

Notes:

- On the S7-1200 CPU 1212C, ``upload()`` of a non-optimized DB is refused with
class 0x81, code 0x04 (see Feature Availability below). Block upload and
download were not run on the S7-1500 CPU 1511F-1 PN.
- Administrative scenarios (``--allow-admin``) were not run.
- To add your CPU, follow the result policy in :doc:`real-plc-testing`.

Enabling PUT/GET Access
-----------------------

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