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S7NetCom by Hampel Software Engineering - Toolkit for LabVIEW Download

An open-source LabVIEW implementation of the S7 PLC network protocol using pure TCP/IP primitives, for talking to SIMATIC PLCs (and others) via Ethernet.

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Version	2.0.0.101
Released	Apr 10, 2024
Publisher	Hampel Software Engineering
License	BSD License
LabVIEW Version	LabVIEW>=16.0
Operating System	Windows, Mac, and Linux
Project links	Homepage Documentation Repository Discussion

Description

An open-source LabVIEW implementation of the S7 PLC network protocol using pure TCP/IP primitives, for talking to SIMATIC PLCs (and others) via Ethernet. The original source code was shared by Marc Christenson on NI's Example Program Code Exchange forum (link in the readme).

This is a reference implementation. It might or might not meet traditional production requirements in terms of uptime, security, absence of bugs, etc. Use at your own risk!

In the NI Example Finder, browsing the directory structure, navigate to \Hampel Software Engineering\S7NetCom for examples.

The HSE Dokuwiki holds more information on the protocol and these VIs:
https://dokuwiki.hampel-soft.com/code/open-source/s7netcom
https://dokuwiki.hampel-soft.com/kb/production/s7-communication

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This software is published under a free licence; you can use, modify and extend it as you wish. However, if you need commercial support please contact us.

At Hampel Software Engineering (HSE) we work with our customers to increase the quality of their software through improved development processes. If you are interested in working with HSE or want to learn more about how we can help you please visit www.hampel-soft.com.

Release Notes

2.0.0.101 (Apr 10, 2024)

[FEATURE] Support for reading and writing parameters (addressing mode 0xA2: Drive-ES-Any) (#31)
[FIX] Location of files (#30)
[FIX] Remove connection status (#26, #27)
[FIX] PDU Size for failed connection attempts (#33)

hampel-soft , joerghampel and martin-nohrer were contributors to this release

1.0.2.1 (Sep 29, 2022)

[FIX] Prevent an PLC error (0x06) on S7 PLCs when reading a string with a lenght of 0 bytes.

manuse was a contributor to this release

1.0.1.10001 (Jun 22, 2021)

[FIX] Add missing terminal connector in "API/Write Data - Byte (Array).vi".
[IMPROVEMENT] Set the default PDU size to 960 bytes (the actual PDU size will be negotiated with the PLC).
[IMPROVEMENT] New accessor to read the actual (negotiated) PDU size.

manuse was a contributor to this release

1.0.0.10000 (May 20, 2021)

[FEATURE] Configurable PDU size (240, 480, 960 bytes).
[FEATURE] Single requests can read/write more data than the PDU size (frame segmentation).
[FEATURE] All nummeric read/write functions have an array variant.
[IMPROVEMENT] The "Read String" VI no longer needs the string length.
[IMPROVEMENT] The API is cleaned up and unified.