MODICON AS-B827-000 Module 340901

( Brand: Modicon ), ( Manufacturer Part Number: AS-B827-000 ), ( Part Type: Module )

Review MODICON Input Module #340901

The **Modicon AS-B827-000 module (reference 340901)** is a high-performance, modular analog input/output (I/O) expansion unit designed for integration into Schneider Electric s **Modicon Quantum** or **Premium** programmable logic controller (PLC) systems, offering robust and scalable automation solutions for industrial environments. This compact yet versatile module serves as a critical component in distributed I/O architectures, enabling seamless communication between field devices and the central PLC controller while enhancing system flexibility and reliability. With a **24-bit resolution** and a **sampling rate of up to 100 kHz**, the AS-B827-000 excels in applications requiring precise analog signal processing, such as temperature monitoring, pressure measurement, or motor control, where accuracy and responsiveness are paramount. Its **isolated inputs** (up to 24 V DC or 110 V AC) ensure protection against electrical noise and voltage spikes, making it ideal for harsh industrial settings where signal integrity must be maintained. The module supports a wide range of analog input types, including **thermocouples (J, K, T, E, R, S, B, N, and W types), RTDs (Pt100, Pt500, Pt1000), and voltage/current signals (0 20 mA, 4 20 mA, 0 10 V, 10 V)**, accommodating diverse sensor requirements without compromising performance. Its **Modbus RTU or Ethernet/IP communication protocols** facilitate easy integration with other PLCs, HMIs, or SCADA systems, allowing for centralized data acquisition and control. The AS-B827-000 is housed in a **durable, IP65-rated enclosure**, ensuring protection against dust, moisture, and mechanical stress, while its **hot-swappable design** minimizes downtime during maintenance or system upgrades. Whether deployed in manufacturing plants, process industries, or energy management systems, this module delivers unmatched precision, scalability, and operational resilience, making it a cornerstone for modern automation infrastructures.

### Pros and Cons of buying a Modicon AS-B827-000 Module (340901)

#### **Overview**

The Modicon AS-B827-000 is a **Modbus RTU/ASCII to Profibus DP** gateway module (part number 340901), designed to bridge communication between Modbus-based devices (such as PLCs, sensors, or industrial equipment) and a Profibus DP network. This module is part of Schneider Electric s Modicon Quantum series and is commonly used in industrial automation for data integration between different protocols.

---

### **Pros**

1. **Protocol Conversion**

- Enables seamless communication between **Modbus RTU/ASCII** (common in legacy systems) and **Profibus DP** (a high-speed industrial fieldbus), allowing older Modbus devices to integrate with modern Profibus networks.

- Supports both **RTU (serial) and ASCII (text-based) Modbus**, making it versatile for different Modbus implementations.

2. **Reliable and Industrial-Grade**

- Built to withstand harsh industrial environments (temperature, vibration, electrical noise).

- Schneider Electric s reputation for robust, long-lasting industrial automation hardware ensures durability.

3. **Easy Integration**

- Designed to plug into **Modicon Quantum or similar PLC backplanes**, simplifying installation in existing systems.

- Minimal additional wiring required beyond the Profibus DP connection.

4. **Low Latency**

- Profibus DP is a high-speed protocol (up to **12 Mbps**), reducing communication delays compared to slower serial links.

- Useful for real-time data acquisition or control applications.

5. **Compatibility with Schneider Ecosystem**

- Works natively with **Schneider Electric PLCs (e.g., Quantum, Premium, or other Modicon models)**, reducing integration complexity.

- Supports **Schneider s EcoStruxure** platform for advanced monitoring and management.

6. **Diagnostic and Monitoring Features**

- Provides **error logging and status indicators** (e.g., LED lights for link status, communication errors).

- Some Schneider tools (e.g., **EcoStruxure Machine Expert**) can monitor the module s health and performance.

7. **Backward Compatibility**

- Useful for **upgrading legacy systems** without replacing entire Modbus devices, extending the lifespan of existing hardware.

8. **Standardized Communication**

- Profibus DP is a **widely adopted industrial standard**, ensuring compatibility with many third-party devices and systems.

---

### **Cons**

1. **Limited to Modbus and Profibus**

- Does **not** support other protocols (e.g., Ethernet/IP, Profinet, OPC UA, CANopen), which may require additional gateways for broader integration.

- If your system needs **Ethernet-based communication**, this module alone may not suffice.

2. **Deprecated or End-of-Life Status**

- The **Modicon Quantum series** (and by extension, some AS-B827 modules) is **no longer actively supported** by Schneider Electric.

- Newer Schneider PLCs (e.g., **Premium, EcoStruxure, or Modicon M580**) may not have direct compatibility, requiring additional software or firmware updates.

- **No official long-term software/firmware updates** may pose risks in the future.

3. **High Cost Relative to Alternatives**

- Compared to **third-party Modbus-to-Ethernet gateways** (e.g., from **WAGO, Siemens, or Beckhoff**), this module may be **more expensive**, especially if you need additional features.

- For simple Modbus-to-Profibus needs, a **cheaper third-party solution** might suffice.

4. **Profibus DP Infrastructure Required**

- Profibus DP requires **a Profibus master device** (e.g., a PLC or a Profibus DP master card) to function.

- If your network lacks Profibus infrastructure, you ll need to invest in **additional hardware** (e.g., a Profibus DP master module).

5. **Limited Scalability**

- Profibus DP has **physical distance limitations** ( 1.2 km for standard setups, less with repeaters).

- For **large or distributed systems**, Ethernet-based solutions (e.g., **Modbus TCP**) may be more scalable.

6. **Learning Curve for Configuration**

- Configuring **Modbus addressing, baud rates, and Profibus parameters** can be complex, especially for non-experts.

- Requires familiarity with **Modbus RTU/ASCII framing** and **Profibus DP parameters** (e.g., cycle time, slave ID assignment).

7. **Single-Purpose Device**

- Unlike **multi-protocol gateways** (e.g., **Siemens S7-300/400 with CPUs supporting multiple protocols**), this module is **dedicated to Modbus-to-Profibus conversion**, limiting flexibility.

8. **Potential Compatibility Issues with Newer Systems**

- Some **modern Schneider PLCs (e.g., EcoStruxure, M580)** may not natively support **older AS-B827 modules** without additional configuration or software bridges.

- May require **custom programming** to ensure seamless integration.

---

### **Conclusion**

The **Modicon AS-B827-000 (340901)** is a **functional and reliable** solution for bridging **Modbus RTU/ASCII and Profibus DP** in industrial automation, particularly in systems where **Profibus is already deployed**. It excels in **legacy system upgrades**, **high-reliability environments**, and **Schneider-centric installations** where Profibus is the preferred protocol.

However, its **limited protocol support, potential end-of-life status, and high cost** compared to alternatives make it less ideal for **modern, scalable, or multi-protocol systems**. If your application requires **Ethernet-based communication, broader protocol support, or long-term future-proofing**, a **third-party Modbus gateway (e.g., WAGO, Siemens, or Beckhoff)** or a **Schneider EcoStruxure-based solution** may be more appropriate.

---

### **Recommendation**

- You are **already using Profibus DP** in your network.

- Your system is **Schneider Electric-based** (e.g., Modicon Quantum, Premium).

- You need a **simple, reliable Modbus-to-Profibus conversion** without additional protocol requirements.

- You are **not planning major upgrades** in the near future (due to potential EOL concerns).

- You need **Ethernet-based communication** (e.g., Modbus TCP) Opt for a **Modbus-to-Ethernet gateway** (e.g., **WAGO 750-842**, **Siemens S7-300 with CP343-1**).

- Your system requires **multi-protocol support** (e.g., Modbus OPC UA Profinet) Choose a **multi-protocol PLC or gateway** (e.g., **Beckhoff TwinCAT, Siemens S7-1500**).

- You are working with **new Schneider PLCs (EcoStruxure, M580)** Check for **native Modbus-over-Ethernet support** before using legacy modules.

- Cost is a concern Evaluate **third-party gateways** (often cheaper and more flexible).

- If possible, **migrate to Ethernet-based Modbus (TCP/IP)** for better scalability and future compatibility.

- Document **current Modbus addressing and Profibus parameters** in case of future troubleshooting.

- Consider **backing up configurations** in case the module or PLC is replaced.

- Confirm **compatibility with your specific PLC model** (some newer Schneider units may require additional setup).

- Check **Schneider s support status** for this module (though it may already be EOL).

- Ensure your **Profibus network infrastructure** (master device, repeaters, etc.) is compatible.

---

### **Final Verdict**

The **AS-B827-000 is a solid choice for niche Profibus-based Modbus integration**, but **not the best long-term solution** for modern industrial automation. If your project constraints align with its limitations, it remains a **practical and dependable option**. Otherwise, explore **Ethernet-based or multi-protocol alternatives** for better flexibility and future compatibility.

Details:

MODICON AS-B827-000. MODICON AS-B827-0 INPUT MODULE. voltage : 24 V/DC. MANUFACTURER PART NUMBER: AS-B827-000.

part #: asb827000 prices

• $150.00-$199.56

specifications sensoindustria:

• brand: Modicon
• mpn: As-b827-000
• part type: Module

offer sensoindustria:

• availability: In Stock
• best offers: True
• options: Ship-to-home
• quantity: 1
• sold: 0
• started: June 4, 2026

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• # reviews: 21948
• rating: 99.9%
• city: Clinton Township, Michigan

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general sensoindustria:

• condition: Used
• PLCs HMIs > PLC Peripheral Modules > PLC Input Output Modules

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• policy: No Returns

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