The Siemens part number 6AV6676-6MB40-0AD0 refers to SIMATIC Modbus/TCP Red—a communication software package that enables redundant Modbus/TCP communication for S7-1200 and S7-1500 controllers.

Function: Supports high-availability (redundant) Modbus/TCP communication using the MB_RED_CLIENT and MB_RED_SERVER instructions in TIA Portal

License Type: Single-user license

Delivery: Download-only (online software delivery)

Compatibility: SIMATIC S7-1200 and S7-1500 CPUs

Net Weight: Approx. 0.001 kg

Export Control: AL: N / ECCN: N

RoHS Compliant: Yes

WEEE Take-Back Obligation: No

Country of Origin: Germany

Lifecycle Status: Active