The YOKOGAWA ALP121-S00 is a highly specialized PROFIBUS-DP Communication Module, specifically designed to serve as a PROFIBUS-DP master within Yokogawa’s CENTUM VP Distributed Control System (DCS). This module is a core component of the CENTUM VP’s Field Control Station (FCS), seamlessly integrating into the N-IO/FIO system architecture. The primary function of the ALP121-S00 is to establish a robust and reliable communication link between the CENTUM VP controller and PROFIBUS-enabled field devices, which operate as slaves on the network. By bridging this critical gap, the module empowers the CENTUM VP platform to interact with a wide range of third-party PROFIBUS equipment, including remote I/O, variable speed drives, and various intelligent instruments. Its high-speed data handling and durable design ensure that essential process information is transmitted with minimal latency, which is crucial for maintaining the performance and stability of the entire control system. The YOKOGAWA ALP121-S00 is positioned as a key enabler for building integrated and hybrid plant control systems, effectively expanding the reach and functionality of the CENTUM VP platform by incorporating a vast ecosystem of field devices.
Technical Specifications
Main Features and Advantages
The YOKOGAWA ALP121-S00 stands out with its powerful feature set and the significant operational benefits it provides to the CENTUM VP DCS environment. One of its most compelling features is its deep and native integration with the CENTUM VP system. The module plugs directly into the Field Control Station (FCS) and is configured using standard CENTUM VP engineering tools, which streamlines the entire setup process and reduces engineering time. As a PROFIBUS-DP master, the ALP121-S00 can manage up to 125 slave devices on a single network segment, offering exceptional scalability for large-scale industrial projects. A major advantage of this module is its ability to support redundant configurations. When two ALP121-S00 modules are used in a redundant pair, they provide automatic failover in the event of a module or network failure, a critical capability for applications demanding maximum uptime and reliability. The module also supports a full range of standard PROFIBUS baud rates, from 9600 bps up to 12 Mbps, offering flexibility in network design to optimize performance for various application needs. For troubleshooting, the on-board LED indicators provide immediate visual feedback on communication status and potential errors, simplifying diagnostics for maintenance personnel. Furthermore, its compatibility with Yokogawa’s Plant Resource Manager (PRM) via PROFIBUS-PA couplers allows for advanced asset management of field instruments, extending the value of the ALP121-S00 beyond simple communication.
Application Field
The YOKOGAWA ALP121-S00 module is a vital component for any industrial plant or facility that uses the CENTUM VP DCS and requires connectivity to PROFIBUS-DP networks. Its primary applications are found in the continuous process industries, including oil and gas, petrochemicals, chemicals, pharmaceuticals, and power generation, where precise and reliable control of field instrumentation is essential. In these sectors, the ALP121-S00 acts as the crucial communication backbone, allowing the CENTUM VP controller to manage a diverse array of field devices such as smart transmitters, flow meters, and actuators. It is also extensively used in hybrid industries, like food and beverage, and pulp and paper, where a blend of continuous and discrete control is required. The ALP121-S00 module effectively solves the challenge of integrating legacy PROFIBUS devices into a modern DCS without the need for complex, third-party gateways. For instance, in a large chemical plant, the ALP121-S00 could be used to connect the central CENTUM VP system to a network of PROFIBUS-enabled motor control centers and remote I/O units, centralizing control and monitoring. Its robust design and high-availability options make it perfectly suited for mission-critical applications where system integrity and reliability are the top priorities. The YOKOGAWA ALP121-S00 is a cornerstone for building a unified and resilient automation architecture.
Related Products
ALP111: This is an earlier generation PROFIBUS-DP communication module for the CENTUM VP FIO system. The ALP121-S00 is a newer model with enhanced capabilities. ALR111: A serial communication module for the CENTUM VP FIO system, used for protocols like Modbus RTU, which serves a similar role but for a different communication standard than the ALP121-S00. ALF111: This module is a Foundation Fieldbus communication module for the CENTUM VP system, designed to connect field devices using that specific protocol, offering an alternative to the ALP121-S00. ANT101: A Vnet/IP bus interface module that is also part of the CENTUM VP system, providing the main network connectivity. It works in conjunction with modules like the ALP121-S00. AFV30S: This is the Field Control Unit (FCU) for the CENTUM VP system. The ALP121-S00 module is installed directly into this unit, making it an essential companion product. ANB10: An ESB Bus Node Unit that can house the ALP121-S00 module, extending the PROFIBUS communication capabilities from the main Field Control Unit.
Installation and Maintenance
Pre-installation preparation: Before installing the YOKOGAWA ALP121-S00, you must ensure that the CENTUM VP Field Control Station (FCS) is completely de-energized to prevent any damage to the module. Verify that the system software, including the CENTUM VP and its engineering tools, is fully compatible with the firmware of the ALP121-S00. It is crucial to obtain the correct GSD (General Station Description) file for the module to ensure proper configuration within the CENTUM VP engineering environment. The network layout should be planned in advance, and all PROFIBUS cables must be correctly routed and terminated at both ends of the segment to maintain signal integrity. The ALP121-S00 module is designed for easy insertion into a spare I/O slot in the FCS or a compatible node unit.
Maintenance recommendations: Routine maintenance for the ALP121-S00 module is primarily software-based, focusing on network diagnostics rather than physical intervention. Use the CENTUM VP’s built-in monitoring functions to regularly check the communication status and performance of the PROFIBUS network. The on-board LED indicators on the face of the ALP121-S00 provide an immediate visual check of the module’s operational status and any communication errors. In a redundant configuration, the system will automatically switch to the standby unit in case of a failure, but the failed ALP121-S00 should be replaced promptly to restore redundancy. When replacing a module, follow the de-energization procedure and ensure that the configuration data is correctly restored to the new unit. For physical care, avoid using liquid cleaners and use a soft, dry cloth to remove any dust.
Product Guarantee
Yokogawa’s commitment to quality is evident in the comprehensive product guarantee for the ALP121-S00. Each ALP121-S00 module is manufactured to the highest industry standards, backed by Yokogawa’s well-established reputation for producing reliable and long-lasting industrial automation equipment. The product includes a standard warranty that covers manufacturing defects, providing customers with confidence in their investment. Beyond the warranty, customers benefit from access to Yokogawa’s global network of expert technical support, which is available to assist with troubleshooting, configuration, and application-specific questions. This focus on robust after-sales service and technical expertise ensures that users can depend on the performance and durability of the ALP121-S00 to maintain the stability and efficiency of their critical automation systems for years to come.
FALK 2050Y3-L ENCLOSED GEAR DRIVE, NNB
FALK 2050Y2-LD ENCLOSED GEAR DRIVE, NNB
FALK 2050Y3-L0 ENCLOSED GEAR DRIVE, NNB
ALLEN BRADLEY1756-A7 RACK W/ PA72 ; L63 ; CNBR NEW
FALK 2060FZ2A ULTRAMAX CONCENTRIC SHAFT GEAR DRIVE, NNB
ECLIPSE PRJ10018230-RW BURNER UNIT, NEW
ECLIPSE PRJ10018230-RW BURNER UNIT, NEW
ALLEN BRADLEY 6186-M12ALTR VERSAVIEW 1200 MONITOR, NIB
FANUC A06B-6120-H045 ai 45HV POWER SUPPLY MODULE
HERZOG HN-FF MILLING MACHINE
ECLIPSE PRJ10017581-RW BURNER UNIT, NEW
