The AS-BADU-204 is a communication adapter module designed as a key component in Schneider Electric’s Modicon Momentum distributed I/O systems. As part of the company’s industrial networking lineup, it enables seamless data exchange between remote I/O stations and central controllers, acting as a translator that converts signals between different communication protocols.
Model AS-BADU-204
Brand Schneider Electric
Type Communication Adapter Module
Protocols Supported Modbus RTU, Modbus Plus
Data Transfer Rate Up to 1 Mbps
Communication Ports 1 x Modbus Plus, 1 x RS485 (Modbus RTU)
Operating Voltage 24V DC
Power Consumption 1.2W typical
Operating Temperature -25°C to 70°C (-13°F to 158°F)
Mounting DIN rail (35mm)
Dimensions 110mm x 90mm x 62mm (W x H x D)
Weight 0.25 kg (0.55 lbs)
Certifications CE, UL, cUL, ATEX
Isolation Galvanic isolation between ports
The AS-BADU-204 is a communication adapter module designed as a key component in Schneider Electric’s Modicon Momentum distributed I/O systems. As part of the company’s industrial networking lineup, it enables seamless data exchange between remote I/O stations and central controllers, acting as a translator that converts signals between different communication protocols.
AS-BADU-204
Its primary role is to extend the reach of control systems by facilitating reliable data transmission over long distances, supporting both Modbus RTU and Modbus Plus protocols. For engineers and integrators, the AS-BADU-204 delivers significant value through its rugged design and flexible configuration options, eliminating the need for complex protocol converters or expensive fiber optic installations. Whether deployed in machine-level networks or large-scale plant-wide systems, this module integrates smoothly with existing infrastructure, reducing setup time while enhancing communication reliability.
AS-BADU-204
Main features and advantages:
The AS-BADU-204 stands out in industrial communication solutions with features engineered for performance and durability in challenging environments. Functionally, it supports data transfer rates up to 1 Mbps, ensuring fast response times even when handling large volumes of I/O data—critical in applications like high-speed packaging lines where split-second decisions depend on real-time sensor data. Its built-in error checking and retry mechanisms minimize data loss, while configurable baud rates allow optimization for different cable lengths and noise conditions.
Hardware design prioritizes resilience and ease of installation. The compact module mounts on standard DIN rails, fitting neatly alongside other Momentum I/O modules in control cabinets or junction boxes. Its rugged construction withstands operating temperatures from -25°C to 70°C, making it suitable for unheated warehouses and outdoor installations. A key advantage is its galvanic isolation between communication ports, preventing ground loops and voltage transients from damaging sensitive controller components—a feature particularly valuable in facilities with multiple power sources.
Compatibility is a strong suit, with seamless integration with Modbus RTU and Modbus Plus networks, as well as Momentum I/O modules like the AS-B814-016 and AS-B824-016. This versatility allows the AS-BADU-204 to serve as a bridge between legacy systems and modern controllers, extending the life of existing infrastructure while enabling connectivity with newer automation components.
Technical specifications:
Model AS-BADU-204
Brand Schneider Electric
Type Communication Adapter Module
Protocols Supported Modbus RTU, Modbus Plus
Data Transfer Rate Up to 1 Mbps
Communication Ports 1 x Modbus Plus, 1 x RS485 (Modbus RTU)
Operating Voltage 24V DC
Power Consumption 1.2W typical
Operating Temperature -25°C to 70°C (-13°F to 158°F)
Mounting DIN rail (35mm)
Dimensions 110mm x 90mm x 62mm (W x H x D)
Weight 0.25 kg (0.55 lbs)
Certifications CE, UL, cUL, ATEX
Isolation Galvanic isolation between ports
In industrial automation systems, where distributed I/O modules are spread across large facilities, reliable communication between remote units and central controllers is the backbone of efficient operation. From automotive plants with robotic cells scattered across the factory floor to mining operations with equipment stationed deep underground, maintaining stable data transmission in harsh environments presents unique challenges. The AS-BADU-204 addresses these challenges head-on, serving as a critical communication interface that ensures seamless connectivity even in settings plagued by electromagnetic interference, long cable runs, or extreme temperature fluctuations.
Consider a beverage bottling plant where filling lines, labeling machines, and palletizers are distributed across a 50,000-square-foot facility. Here, the AS-BADU-204 acts as a bridge between remote I/O modules monitoring bottle counts and pressure levels, and the central PLC coordinating the entire production sequence. It reliably transmits data over extended distances, ensuring the controller receives real-time updates to adjust speeds and prevent bottlenecks. In waste management facilities, where equipment is often exposed to moisture and vibration, this module maintains communication integrity between landfill compactor sensors and the control room, preventing costly downtime due to lost signals. The AS-BADU-204 is essential in industrial automation, providing the robust communication link needed to keep distributed systems synchronized and responsive.
Related products:
AS-BADU-202 – Basic version with Modbus RTU only, ideal for simpler networks not requiring Modbus Plus connectivity.
AS-BADU-304 – Advanced model with Ethernet/IP support, designed to work with the AS-BADU-204 in hybrid networks.
AS-B814-016 – Digital input module whose data is often transmitted through the AS-BADU-204 in remote I/O stations.
AS-B824-016 – Digital output module that receives commands via the AS-BADU-204 in distributed control setups.
AS-B883-200 – Surge protection module recommended for use with the AS-BADU-204 to protect communication lines from transients.
AS-B901-000 – Power supply module that provides stable 24V DC to the AS-BADU-204 in remote enclosures.
AS-B810-002 – Ethernet gateway that pairs with the AS-BADU-204 to extend connectivity to corporate networks.
AS-B808-016 – Analog input module whose sensor data is reliably transmitted using the AS-BADU-204’s error-checking capabilities.
Installation and maintenance:
Before installing the AS-BADU-204, verify that communication cables are rated for industrial use and properly shielded to minimize noise interference—this is especially critical for cable runs exceeding 100 meters. Ensure the module is mounted in a location with adequate ventilation, as ambient temperatures approaching 70°C can affect communication stability. Check that the 24V DC power supply provides clean power with minimal ripple, as voltage fluctuations can cause intermittent communication failures. When connecting to Modbus Plus networks, terminate the bus properly at both ends to prevent signal reflections that degrade data integrity.
For maintenance, inspect the AS-BADU-204’s status LEDs monthly to verify normal operation—flashing error codes indicate issues like baud rate mismatches or bus faults. Clean dust from ventilation slots quarterly using compressed air, particularly in dusty environments like cement plants. Every six months, check cable connections for tightness, as vibration can loosen terminals over time. When updating controller firmware, ensure the AS-BADU-204’s firmware is compatible with the new version to prevent protocol mismatches that disrupt communication.
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