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Entry type: Download Entry ID: 109743555, Entry date: 06/18/2021

SIPROTEC 4 – 7SJ66 – Device Driver

  • Entry
  • Associated product(s)
Firmware and device driver for 7SJ66 V4.35 and previous versions

SIPROTEC 7SJ66 Device Driver and Firmware 

  • Device Driver
 Registrierung notwendig  7SJ66 V4.35 / DIGSI 4.92 and higher (4,0 MB)
  • Firmware
 Registrierung notwendig  Setup 7SJ66x V4.35.01 (4,2 MB)
  • Product Information
SIPROTEC 7SJ66 Product Information
  • Manuals
7SJ66 Multi-Functional Protective Relay with Local Control
SIPROTEC 7SJ66 relevant Manuals

 SHA2 Checksum for verifying integrity of the provided firmware files (Navigate to Downloads > Software > File Integrity Verification)

SIPROTEC 7SJ66 Protocols


 Registrierung notwendig  7SJ66_DNP_Serial_us.pdf (1,2 MB)


 Registrierung notwendig  7SJ66_DNP_IP_us.pdf (1,0 MB)

IEC 61850

 Registrierung notwendig  7SJ66_IEC_61850_Mapping.pdf (1,7 MB)
 Registrierung notwendig  7SJ66_PIXIT_A2_V041001_us.pdf (477,5 KB)

Modbus RTU

  Com_Modbus_7SJ66_us.pdf (1,6 MB)


 Registrierung notwendig  7SJ66_PRP_PIXIT_us.pdf (902,6 KB)

Installation Remarks

A detailed description of firmware and configuration updates can be found here:

Service Information for Device Driver Update (PDF)
Service Information for DIGSI 4 and FW Update (PDF)

Previous Versions

Please note respective disclaimer in section "Terms of Use" below.

V4.34 Firmware  Registrierung notwendig  Setup 7SJ66x V4.34.02 (4,2 MB)
V4.33 Device Driver  Registrierung notwendig  7SJ66 V4.33 with help / DIGSI 4.92 and higher (15,7 MB)
 Firmware  Registrierung notwendig  Setup 7SJ66x V4.33.00 (4,1 MB)
 Readme OSS  Registrierung notwendig  ReadmeOSS-SIPROTEC4_7SJ66_V4.33.html (75,5 KB)
V4.32 Device Driver  Registrierung notwendig  7SJ66 V4.31 with help / DIGSI 4.92 and higher (15,2 MB)
 Firmware  Registrierung notwendig  Setup 7SJ66x V4.32.00 (4,1 MB)
  Registrierung notwendig  Setup 7SJ66x V4.31.01 (4,1 MB)
 Readme OSS  Registrierung notwendig  ReadMeOSS-SIPROTEC4-7SJ66-V4.31.html (69,1 KB) 

SHA2 Checksum for verifying integrity of the provided firmware files (Navigate to Downloads > Software > File Integrity Verification)

DIGSI 4 Full Version (incl. Service Packs & released Device Drivers)

Previous firmware versions

Terms of Use

Reservation regarding future software downloads

The Software offered for download is currently provided free of charge. For the future, Siemens reserves the right to provide the Software against payment of a royalty fee.

General License Conditions

General License Conditions Software

Third Party Software - Terms of License and Copyright

Open Source Software:
Among other things, this product contains Open Source Software that was developed by third parties. The Open Source Software included with this product and the relevant Open Source Software license agreement can be found in Readme_OSS. The Open Source Software program is protected by copyright. You are permitted to use the Open Source Software according to the Open Source Software license agreement.
You can download the Readme_OSS file here:
 Registrierung notwendig  ReadmeOSS-SIPROTEC4_7SJ66_V4.35.html (126,8 KB)

Special Information for Resellers

The information and the license terms in the Readme_OSS file must be passed on to the purchasing party to avoid license infringements by the reseller or purchasing party.

Disclaimer regarding use of previous software versions

Siemens’ products and solutions undergo continuous development to remain leading in many fields of technology and to represent the state of the art. Siemens strongly recommends to apply product updates as soon as available and to always use the latest product versions.

Use of product versions that are no longer supported, and failure to apply latest updates may increase customer’s exposure to system degradation. By downloading unsupported product version the customer confirms that he operates this outdated product version at his own risk and responsibility and with full awareness of potential risks and consequences and confirms his conscious decision to abandon the enhancements available only with the current version as listed in [1]. The customer has read that he should actively plan the upgrade of his installed base to the latest supported product versions.

The Customer hereby explicitly agrees and accepts that Siemens does not cover any warranty or liability, explicitly or implicitly, regardless of any legal reason, for any damages or losses caused directly or indirectly by the use of outdated/unsupported product versions.
The Customer shall indemnify and hold Siemens harmless against any third-party claims existing or arising in this connection.

[1] Further information about Siemens ProductCERT and Siemens CERT

Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit
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