The Siemens 6AV2156-0BL01-6AA0 is the SIMATIC WinCC Unified Line Coordination V16, an option for WinCC Unified V16 engineering/runtime software. It comes as a single license, with software and documentation on DVD/CD, and a license key on a USB flash drive, this product has been discontinued 

Product Name: SIMATIC WinCC Unified Line Coordination V16

Software Type: Engineering/Runtime Software

License Type: Single License

Contents: Software and documentation on DVD/CD, license key on USB flash drive

Product Class: Class A

Packaging: 1x DVD + 1x USB

Net Weight: 0.199 kg

Packaging Dimensions: 18.90 x 26.70 x 3.30 cm

Commodity Code: 85234910

Country of Origin: Germany

RoHS Compliance: Yes

WEEE Take-Back Obligation: Yes

Discontinued Date: January 1, 2025

Export Control Regulations: AL: N / ECCN: N

Standard Lead Time: 5 working days (ex-works)