The Yokogawa ALE111-S50 is a high-performance Ethernet communication module designed for the Centum VP and Centum CS 3000 Distributed Control Systems (DCS). This module enables seamless, high-speed data exchange between the Yokogawa DCS and external subsystems such as Programmable Logic Controllers (PLCs), gas chromatographs, and other intelligent electronic devices (IEDs). By supporting various industrial Ethernet protocols, the ALE111-S50 serves as a critical gateway for integrating third-party equipment into the central control architecture.
Product Specifications
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Model Number: ALE111-S50
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Module Type: Ethernet Communication Module
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Communication Speed: 10/100 Mbps (Auto-sensing)
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Number of Ports: Dual-redundant ports (RJ45 connectors)
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Supported Protocols: Modbus/TCP, EtherNet/IP (via specific configuration), and general TCP/IP-based communication
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Maximum Connectable Units: Up to 30 subsystems per module (configuration dependent)
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Redundancy: Supports dual-redundant configuration for mission-critical paths
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Dimensions: 130 mm x 45 mm x 245 mm
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Weight: 0.80 kg
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Country of Origin: Japan
Application Fields
The ALE111-S50 is essential for large-scale integration projects in sectors such as:
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Natural Gas Processing: Integrating flow computer data and gas quality analysis into the main control room.
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Refining: Connecting third-party PLC-based package units (e.g., compressor skids or water treatment units) to the Centum DCS.
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Power Plants: Communicating with substation automation systems and electrical protection relays.
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Chemical Manufacturing: Managing data exchange with automated warehouse systems and specialized laboratory equipment.
Product Usage Instructions
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Module Mounting: Install the ALE111-S50 into a compatible I/O node unit (e.g., ANB10 or ANB11). Ensure the module is firmly locked using the mounting levers to maintain a secure backplane connection.
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Network Wiring: Use Category 5e (or higher) shielded twisted-pair (STP) cables. For redundant setups, connect the two ports to independent network switches to ensure path diversity.
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Software Definition: Use the “System View” software to define the communication parameters (IP address, subnet mask, and gateway). Configure the “Communication Builder” to define the data registers and polling intervals for external devices.
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Diagnosis: Monitor the “RDY” (Ready) and “RCV/SND” (Receive/Send) LEDs on the front panel. A green RDY light indicates the module firmware is running, while flickering RCV/SND lights indicate active data traffic.
Frequently Asked Questions (Q&A)
Q: Does the ALE111-S50 support Modbus/TCP directly? A: Yes, the ALE111 is widely used for Modbus/TCP communication, acting as either a master or a slave to facilitate data exchange with compatible hardware.
Q: Can I replace a failed ALE111 module without stopping the process? A: If the system is configured for dual-redundancy, the standby module will maintain communication. You can hot-swap the faulty module after confirming the “STBY” status on the healthy unit.
Q: What is the maximum distance for the Ethernet connection? A: Standard Ethernet limitations apply (100 meters per segment). For longer distances, a fiber optic media converter or industrial switch should be used.
Q: Is there a limit to how many data points I can map? A: Yes, the capacity depends on the system software license and the specific communication package used. Always refer to the Yokogawa “Communication Module” capacity table in the GS (General Specifications) sheet.
Similar Model Recommendations
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Yokogawa ALE111-S51: Variant with specialized coating for corrosive environments.
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Yokogawa ALF111-S50: Foundation Fieldbus communication module.
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Yokogawa ALR111-S50: Serial Communication Module (RS-232C).
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Yokogawa ALR121-S50: Serial Communication Module (RS-422/RS-485).
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Yokogawa AFV30D: Duplexed Field Control Unit frequently used as the host for ALE111 modules.
