Excellent PLC
Product Introduction
The Yokogawa ACM71 Ethernet Communication Module is an advanced communication interface module designed for use with Yokogawa’s STARDOM and CENTUM series control systems. It provides a robust and flexible Ethernet communication interface that enables high-speed data exchange between controllers, supervisory systems, and external devices. The ACM71 supports various industrial Ethernet protocols and allows seamless integration within distributed control and monitoring architectures.
This module is engineered for real-time data communication in mission-critical industrial automation systems. It ensures reliable information transfer across multiple network topologies, including star, ring, and redundant configurations. Its modular design allows easy installation and maintenance within Yokogawa’s system racks, improving overall system scalability and connectivity.
The ACM71 plays a key role in process automation, data acquisition, and remote monitoring applications, ensuring reliable and secure communication between field devices, controllers, and plant networks. Its robust performance, combined with Yokogawa’s proven reliability, makes it an essential component for modern industrial control networks.
Technical Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Yokogawa Electric Corporation |
| Model Number | ACM71 |
| Product Type | Ethernet Communication Module |
| Supported Systems | STARDOM FCN/FCJ Controllers, CENTUM VP Systems |
| Communication Interface | 10BASE-T / 100BASE-TX Ethernet |
| Supported Protocols | Modbus/TCP, EtherNet/IP, TCP/IP, UDP, SNTP |
| Number of Ethernet Ports | 2 (redundant ports supported) |
| Transmission Speed | 10 / 100 Mbps (auto-negotiation) |
| IP Address Assignment | Static or DHCP configurable |
| Network Redundancy | Yes (dual Ethernet redundancy supported) |
| Maximum Connections | Up to 64 concurrent connections |
| Diagnostics Function | Built-in self-diagnostics, LED network indicators |
| Data Transfer Rate | Up to 1,000 packets per second (depending on system load) |
| Internal Memory | 16 MB flash memory |
| Configuration Interface | Web-based or engineering tool configuration |
| Isolation | 1500 Vrms between Ethernet and system backplane |
| Power Supply Voltage | 24 VDC (supplied from base unit) |
| Power Consumption | 4.5 W (typical) |
| Operating Temperature | 0°C to +55°C |
| Storage Temperature | -20°C to +70°C |
| Relative Humidity | 5% to 95% RH, non-condensing |
| Mounting Type | Plug-in module (mounted on base unit) |
| Dimensions (W × H × D) | 180× 55 × 100 mm |
| Weight | 0.5 kg |
| Certifications | CE, UL, CSA, RoHS compliant |
Applications
The Yokogawa ACM71 Ethernet Communication Module is widely used in automation systems where stable, high-speed data communication is required. It supports integration between distributed control systems and plant information networks, enabling unified data management. Typical applications include:
-
Process automation systems – Facilitates real-time control and monitoring of industrial plants.
-
Power generation and utilities – Ensures fast and reliable communication between control nodes.
-
Oil and gas industries – Used in wellhead monitoring, pipeline control, and distributed systems.
-
Chemical and petrochemical plants – Provides seamless data transfer between process units.
-
Water treatment and environmental monitoring – Enables remote data acquisition and diagnostics.
-
Manufacturing and assembly automation – Integrates with production control networks for better efficiency.
By supporting multiple communication protocols and redundant Ethernet connections, the ACM71 enhances the availability and stability of industrial network infrastructures.
Product Advantages
-
High-Speed Data Transmission – Supports fast Ethernet communication with up to 100 Mbps transfer speed.
-
Flexible Network Configuration – Compatible with star, ring, and redundant Ethernet topologies.
-
Wide Protocol Support – Offers Modbus/TCP, EtherNet/IP, and general TCP/IP communication for interoperability.
-
Integrated Redundancy – Dual Ethernet ports provide seamless switchover in case of network failure.
-
Advanced Diagnostics – Equipped with LED indicators and built-in self-diagnostic functions for maintenance efficiency.
-
Simple Configuration – Easy setup via web interface or Yokogawa engineering tools.
-
Strong Electromagnetic Immunity – Designed for stable operation in harsh industrial environments.
-
High Reliability – Backed by Yokogawa’s proven industrial control technology.
-
Modular Structure – Facilitates quick replacement and minimizes system downtime.
-
Secure Communication – Built-in IP filtering and diagnostic options improve network security.
FAQ
1. What Ethernet standards does the ACM71 support?
It supports both 10BASE-T and 100BASE-TX Ethernet standards with auto-negotiation for optimal performance.
2. Can the ACM71 operate in redundant network configurations?
Yes, it supports dual Ethernet redundancy for seamless communication in case of a network path failure.
3. Which communication protocols are compatible with the ACM71?
It supports Modbus/TCP, EtherNet/IP, TCP/IP, UDP, and SNTP for time synchronization.
4. How is the IP address assigned to the ACM71?
The IP address can be assigned manually (static) or automatically through DHCP configuration.
5. What diagnostic functions are available in the ACM71?
It includes built-in self-diagnostics, error logging, and LED indicators for link status and activity.
6. How many simultaneous Ethernet connections can the ACM71 handle?
It can manage up to 64 concurrent connections depending on network configuration and controller load.
7. Does the ACM71 provide electrical isolation between the Ethernet ports and the system?
Yes, it provides 1500 Vrms isolation between Ethernet circuitry and the system backplane.
8. How is the module configured during installation?
Configuration can be performed through Yokogawa’s engineering software or via a browser-based interface.
9. Can the ACM71 synchronize system time with external NTP servers?
Yes, it supports the SNTP protocol for automatic time synchronization across the network.
10. What happens if one Ethernet port fails during operation?
The module automatically switches communication to the redundant port without data loss or system interruption.
Related Models (Same or Compatible Series)
| Model | Description |
|---|---|
| ACM11 | Serial Communication Module for STARDOM systems |
| ACM12 | Dual Communication Interface Module |
| ACM21 | RS-485 Communication Interface Module |
| ACM72 | Gigabit Ethernet Communication Module |
| F3LC11 | STARDOM Controller CPU Module |
| F3BU04 | Base Unit for ACM and CPU Modules |
Popular Yokogawa Models (Same Brand)
| Model | Description |
|---|---|
| AAI141 | Analog Input Module, 16 channels |
| AAI543 | Analog Output Module, 8 channels |
| ADM12C | Digital Input Module, 16 channels |
| ANB10D | Communication Bus Node Interface |
| CP451-10 | CPU Module for CENTUM VP System |
| PW482-10 | Power Supply Module for Yokogawa DCS Systems |
