Yokogawa ALP121-S01 Advanced PROFIBUS-DP Master Communication Module for CENTUM VP Distributed Control Systems
Yokogawa ALP121-S01 Advanced PROFIBUS-DP Master Communication Module for CENTUM VP Distributed Control Systems
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Brand:Yokogawa Electric Item No.:Yokogawa ALP121-S01 Product Origin:Japan Product Dimensions:98 × 32 × 220 mm Product Weight:0.30 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Yokogawa ALP121-S01 is a high-performance PROFIBUS-DP master communication module engineered for Yokogawa’s CENTUM VP distributed control systems. It provides reliable connectivity between the DCS controller and PROFIBUS-DP field devices such as remote I/O systems, PLCs, drives, and intelligent instrumentation.
Designed for demanding industrial automation environments, the module enables deterministic and high-speed data exchange across the PROFIBUS network while maintaining strong electrical isolation between the field network and control system. This architecture helps ensure stable communication performance in complex industrial plants.
With support for high-speed communication and flexible network integration, the ALP121-S01 is commonly used in large-scale process industries where centralized monitoring and precise field device control are required. It also supports redundant configurations to improve system availability and minimize downtime in critical automation systems.
Technical Specifications
Parameter
Specification
Model
ALP121-S01
Product Type
PROFIBUS-DP Communication Module
Communication Role
PROFIBUS-DP Master
Communication Interface
PROFIBUS-DP
Physical Layer
EIA-RS-485
Communication Port
1 × D-Sub 9-pin (female)
Transmission Speed
9.6 kbps – 12 Mbps
Maximum Transmission Distance
Up to 1.2 km (at 9600 bps)
Maximum Slave Devices
Up to 125 devices
I/O Data Capacity
1000 words per module
Communication Definitions
Up to 200
Operating Voltage
24 V DC
Maximum Current Consumption
0.7 A
Compatible Systems
CENTUM VP, AFV30 / AFV40 FCS
Dimensions (L × W × H)
98 × 32 × 220 mm
Weight
0.30 kg
The module connects field devices to the control system using PROFIBUS-DP communication and can also interface with PROFIBUS-PA devices through a DP/PA coupler for extended fieldbus integration.
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Applications
The ALP121-S01 is widely used in industries requiring stable and high-speed industrial communication networks.
Typical applications include:
Distributed Control System (DCS) field network communication
PROFIBUS-DP remote I/O integration
Industrial production and manufacturing automation
Process control systems in oil & gas plants
Power generation and utility automation
By enabling centralized controllers to communicate with multiple field devices simultaneously, the module helps maintain efficient plant operations and accurate process control.
Advantages
High-Speed Industrial Communication
Supports communication rates up to 12 Mbps, ensuring fast data transmission across PROFIBUS networks.
Large Device Connectivity
One module can communicate with up to 125 PROFIBUS-DP slave devices, enabling scalable system expansion.
Reliable Signal Isolation
Electrical isolation between the control system and field network protects equipment and improves system reliability.
Redundant Network Support
Supports dual-module redundancy, allowing automatic switchover if one module fails, ensuring continuous system operation.
Flexible Integration with Yokogawa Systems
Fully compatible with CENTUM VP architecture and integrates easily with existing Yokogawa automation infrastructure.
Technical FAQs
1. What is the main function of the ALP121-S01 module?
It enables PROFIBUS-DP communication between Yokogawa DCS controllers and field devices.
2. What protocol does this module support?
The module supports the PROFIBUS-DP industrial communication protocol.
3. What is the maximum communication speed?
Communication speeds range from 9.6 kbps to 12 Mbps.
4. How many communication ports are available?
The module includes one PROFIBUS-DP port.
5. What connector is used for communication?
A 9-pin D-Sub female connector is used for the PROFIBUS interface.
6. What is the maximum network distance?
The communication distance can reach 1.2 km at 9600 bps, depending on cable configuration.
7. Does the module support redundant communication?
Yes. Dual modules can be installed to create a redundant communication network.
8. Which systems are compatible with ALP121-S01?
It is designed for CENTUM VP distributed control systems and compatible field control units.
9. What is the typical power consumption?
The module consumes approximately 0.7 A during operation.
10. What industries commonly use this module?
It is widely used in oil & gas, chemical processing, power generation, and large-scale manufacturing automation.
