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Product Overview
The ABB CM574-RS 1SAP170400R0201 Communication Module is a high-performance serial communication interface designed to extend the communication capabilities of ABB AC500 series PLC systems. The CM574-RS module provides two serial ports (RS-232/RS-485/RS-422) that allow seamless integration of third-party serial devices — such as drives, barcode scanners, operator panels, sensors, and legacy equipment — into modern automation environments.
This compact yet powerful module offers flexibility for a wide range of industrial communication protocols, including Modbus RTU/ASCII, free ASCII, and user-defined protocols. Designed for rugged and industrial-grade environments, the CM574-RS is an ideal solution for enhancing communication options within machine automation, process control, and factory automation systems.
Engineered by ABB, one of the global leaders in automation and electrification, the CM574-RS meets high standards for reliability, ease of integration, and long service life. Its compact DIN-rail mounting and compatibility with ABB AC500 CPUs ensure a smooth setup and a consistent communication backbone for complex automation networks.
Product Specifications
| Parameter | Value |
|---|---|
| Model | CM574-RS (1SAP170400R0201) |
| Product Type | Communication Module |
| System Compatibility | ABB AC500 PLC |
| Serial Interfaces | 2 Ports (RS-232, RS-485/RS-422 switchable) |
| Supported Protocols | Modbus RTU/ASCII, Free ASCII, User-defined |
| Baud Rate | 1,200 bps to 115.2 kbps |
| Data Bits | 7 or 8 bits |
| Stop Bits | 1 or 2 |
| Parity | None, Odd, Even |
| Isolation | 500 V Galvanic isolation |
| Diagnostics | LEDs for TX, RX, status |
| Hot Swap Support | No (requires power cycle for change) |
| Mounting Type | DIN-rail mount |
| Operating Voltage | 24 VDC nominal |
| Power Consumption | < 3 W |
| Operating Temperature Range | -25 °C to +60 °C |
| Storage Temperature Range | -40 °C to +85 °C |
| Relative Humidity (non-condensing) | 5% to 95% RH |
| Certifications | CE, cULus |
| EMC Compliance | EN 61000-6-2, EN 61000-6-4 |
| Dimensions (W × H × D) | 62 × 135 × 28 mm |
| Weight | 0.095 kg |
| Mean Time Between Failures (MTBF) | > 600,000 hours |
Applications
The ABB CM574-RS Communication Module is a flexible tool for enabling serial communication across various industrial automation platforms:
-
Factory Automation
Integrating legacy RS-232/RS-485 equipment into new control architectures. -
Machine Automation
Communication with drives, operator panels, barcode scanners, RFID readers. -
Building Automation
Serial communication with HVAC controllers, energy meters. -
Oil & Gas
Monitoring and control of remote pipeline instruments, serial SCADA devices. -
Water & Wastewater
Linking flow meters, analyzers, and instrumentation into centralized SCADA systems. -
Transportation
Railways, airport baggage systems, vehicle control systems. -
Renewable Energy
Communication with inverters, data loggers, and weather stations.
Product Advantages
-
Flexible Protocol Support
Supports Modbus RTU/ASCII and user-defined serial protocols, allowing integration with a wide range of devices. -
Dual Port Interface
Offers two serial ports that can be independently configured (RS-232/485/422). -
High Reliability
Galvanic isolation protects both module and PLC from voltage surges and ground loops. -
Compact Design
Slim 45 mm width fits easily into crowded control cabinets. -
Global Certifications
CE and UL approvals ensure compliance with international standards. -
User-Friendly Diagnostics
LED indicators for TX, RX, and module status simplify troubleshooting. -
Industrial Hardened
Designed for operation in demanding environments with wide temperature range and high EMC immunity. -
Seamless Integration
Fully compatible with ABB AC500 CPU series, supported by ABB Automation Builder engineering suite. -
High MTBF
Designed for over 600,000 hours of operational life — reduces maintenance needs. -
Future-Proof
Helps extend life of legacy equipment by connecting older serial devices to modern PLC platforms.
Frequently Asked Questions (FAQ)
-
How many serial ports does the CM574-RS module provide?
It offers two independently configurable ports (RS-232/RS-485/RS-422). -
Is this module compatible with non-ABB devices?
Yes, it is commonly used to communicate with 3rd-party devices such as drives, meters, and sensors. -
Does it support Modbus RTU?
Yes, Modbus RTU/ASCII is natively supported. -
Can I use different baud rates on the two ports?
Yes, each port can be configured independently. -
Does this module support hot-swapping?
No, changes require a power cycle of the PLC system. -
What level of isolation is provided?
500 V galvanic isolation is provided between field and control circuits. -
Is it suitable for outdoor installation?
It is designed for indoor industrial environments. For outdoor use, proper enclosures should be used. -
What software is used to configure the CM574-RS?
ABB Automation Builder software is used for configuration and programming. -
Does it support user-defined protocols?
Yes, the module can be programmed to handle custom ASCII-based protocols. -
Can it be used in redundant PLC architectures?
The CM574-RS module itself does not offer built-in redundancy, but can be used within redundant AC500 PLC systems.
Related Models from the Same Series or Categor
| Model | Product Type | Ports | Protocol Support | Dimensions (W×H×D) | Weight |
|---|---|---|---|---|---|
| CM574-RS | Communication Module | 2 | Modbus RTU, User-defined | 45×100×75 mm | 0.18 kg |
| CM578-CN | Communication Module | 1 | CANopen | 45×100×75 mm | 0.18 kg |
| CM579-PNIO | Communication Module | 1 | PROFINET IO | 45×100×75 mm | 0.18 kg |
| CM577-DP | Communication Module | 1 | PROFIBUS DP | 45×100×75 mm | 0.18 kg |
| CM589-PDP | Communication Module | 1 | PROFIBUS DP Slave | 45×100×75 mm | 0.18 kg |
| CM592-BDP | Communication Module | 1 | PROFIBUS DP (redundant) | 45×100×75 mm | 0.18 kg |
Popular Models from ABB Product Line
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|---|---|---|---|---|
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