The Siemens 6ES5923-3UA11 is a specialized coordinator module designed for multi-processor configurations within the Simatic S5-135U and S5-155U automation systems. This module acts as a central hardware arbitrator, managing bus access and inter-processor communication for systems utilizing between two and four CPUs. By facilitating high-speed synchronization and preventing bus contention, the module ensures deterministic performance in critical industrial applications such as power generation and large-scale manufacturing.
Features
Multi-Processor Arbitration: Dynamically manages bus mastership to prevent data collisions during simultaneous memory access by multiple CPUs.
High-Speed Communication: Provides 2048 inter-processor communication bit memories for efficient flag status exchange between parallel processors.
Compact Design: Occupies a single slot in the central rack, optimizing space for additional I/O or processing modules.
Hardware-Level Control: Executes arbitration logic directly at the backplane level for minimal latency and high reliability.
Applications
This module is essential for complex automation tasks requiring parallel processing power. Common applications include high-speed automotive assembly lines, chemical process control, and power plant management where multiple CPUs must share a single backplane bus without compromising system timing or data integrity.
Technical Specifications
Model
6ES5923-3UA11
Series
Simatic S5-135U / S5-155U
Module Type
Coordinator Module
Slot Requirement
1-Slot
CPU Capacity
2 to 4 CPUs
Bit Memory
2048 bits
Power Consumption
1.5 A at 5 VDC (from backplane)
Operating Temperature
0 to 60 deg C
Storage Temperature
-40 to 70 deg C
Installation Guidelines
Power Off: Always disconnect power from the S5 rack before inserting or removing the coordinator module to prevent electrical damage.
Slot Alignment: Ensure the module is properly aligned with the backplane connector pins before applying pressure to seat the board.
ESD Handling: Use standard electrostatic discharge (ESD) precautions, including a wrist strap, when handling the module to protect sensitive internal logic.
Environment: Ensure the cabinet provides adequate ventilation to maintain operating temperatures within the specified 0 to 60 deg C range.
FAQ
Does this module require a programming device port?
No, the 6ES5923-3UA11 does not feature an onboard programming device port. It operates as a dedicated hardware arbitrator for the backplane bus.
Can this module be used in any S5 rack?
This module is specifically engineered for the Simatic S5-135U and S5-155U series racks to manage multi-processor synchronization.
