ASi EtherNet/IP + ModbusTCP Gateways – Ready for industry 4.0 and ideal for Rockwell PLCs
ASi EtherNet/IP + ModbusTCP Gateways – always equipped with OPC UA and REST API
Our ASi gateways with EtherNet/IP + Modbus TCP interface are available with and without integrated safety monitor. They are ideal for connecting AS-Interface (ASi) to a Rockwell PLC. With the state-of-the-art IT interfaces OPC UA and REST API, you can implement IIoT projects quickly and easily. As an edge device, a single gateway collects data from hundreds of sensors and actuators - and can make it available to cloud-based databases, for example.
All modern ASi-5/ASi-3 gateways can be securely updated in the field and can therefore meet future safety requirements long after commissioning. In addition, ASi already guarantees a high level of cyber security due to its structure. Find out more about IIoT and Industry 4.0 here.
For standard applications:
ASi EtherNet/IP + Modbus TCP Gateways without integrated Safety monitor
We recommend the "Bihl+Wiedemann's Choice" articles BWU3849 and BWU3851 for almost all standard applications. Here you also benefit from our new power supply generation.
![](/fileadmin/_processed_/0/8/csm_3849_83d9f80938.png)
BWU3849
1 ASi circuit, 1 ASi-5/ASi-3 Master
- integrated decoupling
max. 4 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP
- OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
![](/fileadmin/_processed_/5/0/csm_3851_3610c20beb.png)
BWU3851
2 ASi circuits, 2 ASi-5/ASi-3 Masters
- integrated decoupling
max. 4 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
However, if you need more than 4A per ASi circuit, you can also use the ASi EtherNet/IP + ModbusTCP Gateways BWU4019 (for 1 ASi circuit) and BWU4258 (for 2 ASi circuits).
![](/fileadmin/_processed_/6/1/csm_4019_94d7837a78.png)
BWU4019
1 ASi circuit, 1 ASi-5/ASi-3 Master
max. 8 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
- OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
![](/fileadmin/_processed_/2/1/csm_4258_d95dd484b7.png)
BWU4258
2 ASi circuits, 2 ASi-5/ASi-3 Masters
max. 8 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
For Safety applications:
ASi EtherNet/IP + ModbusTCP Gateways with integrated Safety monitor
We recommend the articles BWU3957 and BWU3958 for almost all Safety applications. Here you also benefit from our new power supply generation.
![](/fileadmin/_processed_/3/9/csm_3957_3423ea1270.png)
BWU3957
1 ASi circuit, 1 ASi-5/ASi-3 Master
integrated decoupling
max.4 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
Safety communication via Safe Link
OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
![](/fileadmin/_processed_/0/5/csm_3958_ba486ab4ff.png)
BWU3958
2 ASi circuits, 2 ASi-5/ASi-3 Masters
integrated decoupling
max. 4 A per ASi circuit
Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
Safety communication via Safe Link
OPC UA interface and integrated webserver for easy diagnostics and maintenance
ASi-5 – great data bandwidth, short cycle times
However, if you are dependent on CIP Safety communication – e.g. due to the use of safe Rockwell PLCs – you can alternatively use the ASi EtherNet/IP + ModbusTCP gateway BWU3857 (for 2 ASi circuits). The gateway offers integrated CIP safety communication for easy integration of the safe signals into the safe Rockwell PLC.
![](/fileadmin/_processed_/6/a/csm_3638_00fc4c693d.png)
BWU3857
- 2 ASi circuits, 2 ASi-3 Masters
- integrated decoupling
- max. 4 A per ASi circuit
- Diagnostics and configuration via EtherNet/IP + ModbusTCP or Ethernet diagnostic interface
- Safety communication via Safe Link
- CIP Safety über EtherNet/IP communication integrated
- OPC UA interface and integrated webserver for easy diagnostics and maintenance
- ASi-5 – great data bandwidth, short cycle times