AL1921 - IO-Link Master EtherNet/IP 8-Port IP20 | ifm efector
料号： AL1921 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $480 | $480.00 |
| 10 | $455 | $4,550.00 |
| 50 | $430 | $21,500.00 |
| 100 | $410 | $41,000.00 |
| 500 | $390 | $195,000.00 |
AL1921 概述
An IO-Link master is an industrial gateway device that sits between a higher-level fieldbus or industrial Ethernet network (such as EtherNet/IP, PROFINET, or EtherCAT) and downstream IO-Link sensors and actuators. IO-Link is a point-to-point, low-latency digital communication standard (IEC 61131-9) that replaces traditional analog and discrete wiring with a single 3-wire cable carrying power, process data, and diagnostics. The master handles the master/slave protocol stack, parameterization storage, and cyclic data exchange, exposing each IO-Link port's value to the controller as discrete I/O or mapped process data. In the industrial automation hierarchy, IO-Link masters belong to the field-level network layer, sitting below controllers and above sensors.
Key features of the AL1921 include three Ethernet ports, support for 8 IO-Link channels (Class A), MQTT JSON push for IT integration, EtherNet/IP CIP messaging, and an IP20 control-panel-mount form factor. The module uses pluggable screw terminals for the power and sensor supply, and standard M12 or RJ45 Ethernet ports depending on the variant. It is designed for space-saving small control cabinet installation.
The architecture is based on a dedicated IO-Link stack processor managing the SIO/DI/DO/IO-Link mode switching on each of the 8 ports, plus a separate Ethernet switch handling the EtherNet/IP and MQTT traffic. The IT/automation network separation is implemented through two separate physical Ethernet interfaces, isolating the OT traffic from the IT traffic.
Typical applications include factory automation IO-Link sensor networks, EtherNet/IP cell-level connectivity, IT/OT convergence via MQTT, and machine-building integration panels. The compact DIN-rail housing makes the AL1921 particularly suited to retrofit or upgrade of existing machines that need to bridge new IO-Link sensors into an EtherNet/IP backbone.
When designing with this module, ensure that the control cabinet provides adequate heat dissipation; the IP20 housing is intended for protected panel mounting only, not for direct exposure to dust or moisture. Plan Ethernet topology so that the IT network and the automation network ports are kept on physically isolated switches to honor the OT/IT separation that the device advertises.
直接替换替代料： AL1921 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
AL1920
✅ 直接替换📋 参考替代料（不在目录中）
AL1922
✅ 直接替换📋 参考替代料（不在目录中）
AL1921 规格参数（制造商发布）
| Product Family | IO-Link master with EtherNet/IP interface |
| Manufacturer | ifm efector |
| Model Designation | AL1921 |
| Industrial Ethernet Protocol | EtherNet/IP |
| Secondary Interface | MQTT JSON |
| Number of Ethernet Ports | 3 |
| Number of IO-Link Ports | 8 (Class A) |
| Number of Digital Inputs | 8 |
| Number of Digital Outputs | 8 |
| Operating Voltage (US) | 20 V to 30 V DC |
| 安装类型 | DIN rail (control panel) |
| Protection Class | IP20 |
| Housing Dimensions (W x H x D) | 50 x 105.3 x 125.7 mm |
| Connection Type | Pluggable screw terminals (US, sensor supply, digital I/O) |
| Data Transmission | Process data, diagnostic data, parameter data |
| RoHS 状态 | Compliant |
AL1921 接口与连接器
AL1921 提供制造商发布的以下接口和连接器：以太网。扩展排针引脚定义、连接器引脚编号和电气限值在制造商文档中定义。
| 以太网 | EtherNet/IP |
请参阅 制造商文档 以查看完整的扩展排针引脚和连接器引脚编号。
典型应用
AL1921 适用于 6 应用s: Factory Automation IO-Link Sensor Networks, EtherNet/IP Cell-Level Connectivity, IT/OT Convergence with MQTT, Retrofit of Legacy Machines with IO-Link, Packaging and Assembly Machine Sensor Aggregation, Process Cell Monitoring and Diagnostics.
Factory Automation IO-Link Sensor Networks
The AL1921's 8 IO-Link Class A ports allow direct connection of up to 8 smart IO-Link sensors, replacing parallel discrete wiring and giving the controller access to process data, diagnostics, and parameterization through the EtherNet/IP interface. With 20-30 V DC operation and EtherNet/IP messaging, the module fits into typical 24 V factory-automation cells and supports sensor replacement without manual configuration when paired with IO-Link devices that store parameters in the master. The IP20 DIN-rail housing suits control-cabinet installation in conventional industrial panels.
推荐
EtherNet/IP Cell-Level Connectivity
Designed primarily as an EtherNet/IP gateway, the AL1921 acts as a CIP adapter that exposes each IO-Link port as EtherNet/IP assembly instances to the PLC. With three Ethernet ports and built-in CIP messaging, it supports daisy-chained EtherNet/IP topologies while keeping machine data accessible to the controller in real time. This makes the AL1921 a natural fit for cells already running EtherNet/IP masters, where IO-Link logic expansion is needed without changing the existing scanner.
推荐
IT/OT Convergence with MQTT
The AL1921's separate MQTT JSON interface publishes process and diagnostic data directly to IT systems without crossing the OT network, honoring the 'separation between automation network and IT network' design that ifm highlights on the product page. With one port dedicated to IT traffic, the OT network stays isolated, allowing MES or cloud consumers to receive the same machine data that the controller sees. This simplifies IT/OT convergence in mixed-protocol plants.
推荐
Retrofit of Legacy Machines with IO-Link
When retrofitting an existing machine with new IO-Link sensors, the AL1921's compact slim-line format fits DIN-rail spaces typically vacated by older analog input modules, allowing incremental IO-Link sensor migration without redesigning the entire control cabinet. Its 8 digital inputs and 8 digital outputs in addition to the 8 IO-Link ports let it absorb stranded discrete wiring, easing the transition from purely discrete I/O to mixed IO-Link digital topologies.
推荐
Packaging and Assembly Machine Sensor Aggregation
Packaging and assembly machines typically use a mix of photoelectric, inductive, and distance sensors; the AL1921 aggregates these through IO-Link while also exposing 8 DI/DO channels for non-IO-Link discrete devices. The EtherNet/IP uplink allows the packaging line PLC to receive aggregated process data at high cyclic rates, while the MQTT interface pushes the same data to a packaging MES for OEE tracking and predictive maintenance. The 20-30 V DC field power lets it run directly from the typical packaging-line 24 V bus.
推荐
Process Cell Monitoring and Diagnostics
Process cells benefit from continuous health monitoring of field sensors, and the AL1921's diagnostic-data channel over EtherNet/IP and JSON output makes it suitable for centralized cell monitoring. By exposing both process data and sensor health, the module supports predictive maintenance programs that flag degrading photoelectric or inductive sensors before they cause line stoppage. With IP20 control-cabinet mounting and 24 V DC operation, it integrates naturally into process cell MCC panels.
推荐
推荐产品汇总
工程参考数据： AL1921 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | AL1920 | AL1922 |
|---|---|---|---|
| Brand | ifm efector | ifm efector | ifm efector |
| Package / Form Factor | DIN rail IP20, 50 x 105.3 x 125.7 mm | DIN rail IP20 (same family) | DIN rail IP20 (same family) |
关键差异点
- Dedicated MQTT JSON interface for IT/OT convergence （对比 AL1920)
- 8 IO-Link Class A ports plus 8 DI / 8 DO （对比 Generic 4-port IO-Link masters)
- Compact slim-line DIN-rail housing （对比 Larger IO-Link master modules)
设计说明
The AL1921 is rated IP20 and is for control-cabinet mounting only; never mount it in an unprotected enclosure or expose it to dust, washdown, or moisture. Provide adequate DIN-rail space for ventilation and for routing the EtherNet/IP and IT-side Ethernet cables to physically separate switches so that the IT/OT segregation is preserved.
Do not assume the AL1920 is pin-compatible with the AL1921 - ifm explicitly notes that technical data may differ between alternative articles and accessories. When migrating an installed AL1920 to AL1921, verify pinout, accessory compatibility, and EtherNet/IP EDS file before commissioning, and re-import the IODD files for the connected IO-Link sensors.
Use separate physical networks for the automation (EtherNet/IP) port and the IT (MQTT JSON) port; do not bridge them through a shared switch unless an industrial DMZ is in the architecture. Keep the IO-Link sensor cables routed away from VFD drive cables to preserve signal integrity of the IO-Link SIO/DIQ communication.
合规信息
RoHS compliance confirmed in distributor parametric data; CE marking per ifm product page; EU/Singapore origin import surcharge effective from 2025-05-01. No AEC-Q100 (automotive) classification applies - this is an industrial automation module.