Siemens 6ES7960-1AA06-0XA0 SIMATIC S7-400H Synchronization Module

The Siemens 6ES7960-1AA06-0XA0 serves as the primary 6ES7960-1AA06-0XA0 Synchronization Module utilized to execute high-speed data mirroring across SIMATIC S7-400H redundant fault-tolerant controller platforms. This hardware sub-module inserts directly into the dedicated synchronization slots of S7-400H CPU units (such as CPU 41xH) to establish an optical link interface via fiber optic patch cables. The component performs real-time cycle-by-cycle synchronization of the two redundant processing units, enabling immediate bumpless failover orchestration without process interruption upon localized hardware faults.

Hardware Specifications

Deterministic Sync-Bus Routing and Firmware Compatibility

The internal optical transceiver circuitry inside this module maintains high-velocity backplane bus communication across the redundant processor interface link. Operating over Profinet or EtherNet/IP deterministic networks, the synchronization hardware mirrors volatile data tables and internal register status updates concurrently with the CPU operating system cycle. This specialized logic allows continuous I/O density scaling and parallel remote rack expansions without adding software processing overhead. The Version 6 (V6) architecture maintains hardware execution tolerances and total firmware flash compatibility with corresponding S7-400H processors, minimizing jitter across the optical pathway during immediate failover cycles.

Frequently Asked Questions

Q: Is it permissible to perform hot-plug insertion of the 6ES7960-1AA06-0XA0 module while the host CPU is operating?

A: No. Installing or removing the synchronization module while the processor is powered can damage the internal bus interface pins. Power down the specific CPU unit before substituting the module hardware.

Q: What action occurs if the optical connection between the paired sync modules is broken?

A: The system logs a synchronization link loss event. If both CPUs remain functional, they enter a standby/sole processing state to prevent split-brain execution, subject to predefined system voting rules.

Q: Does the module configuration require explicit parameter mapping within Step 7 or TIA Portal?

A: No. The hardware operates seamlessly at the firmware layer. The programming software automatically initializes and coordinates the dual sync channels upon assigning the correct CPU 41xH hardware matrix profiles.

Field Installation Guidelines

• Inspect the optical interface ports for particulate contamination prior to inserting the fiber optic patch cables.
• Align the module retention tabs with the host CPU receiver frame and insert the card squarely until the mechanical seat locks engage.
• Secure the fiber optic patch cabling to dedicated industrial cable management trays to eliminate mechanical strain and bend-radius violations.
• Maintain clean ambient airflow across the cabinet structure to prevent localized thermal accumulation within the host CPU module chassis.