EtherNet/IP + Modbus/TCP Fieldbus system
What is EtherNet/IP?
EtherNet/IP (Ethernet Industrial Protocol) is an open, CIP-based fieldbus standard developed by Rockwell Automation and ODVA (Open DeviceNet Vendor Association). The standard is primarily used in automation technology. It is employed in various industries to control and monitor production processes. EtherNet/IP allows devices from different manufacturers to communicate with each other without the need for special interface adaptations.
What is Modbus TCP?
Modbus TCP is an open fieldbus standard for industrial communication via Ethernet. The widely used standard is mainly used in automation technology and enables devices from different manufacturers to communicate without any special interface adaptations. Modbus TCP is available in different operating modes for data exchange via serial interfaces. The operating modes supported are RTU, ASCII, and TCP. Modbus was originally developed by the company Gould-Modicon.
![[Translate to Englisch:] EtherNet/IP + Modbus/TCP](/fileadmin/_processed_/6/0/csm_ethernet-ip-modbus-tcp_be249764fb.webp "[Translate to Englisch:] EtherNet/IP + Modbus/TCP")
EtherNet/IP + Modbus/TCP Gateways
EtherNet/IP + Modbus/TCP ASi Gateways
EtherNet/IP + Modbus/TCP ASi gateways in stainless steel provide an interface for an EtherNet/IP + Modbus/TCP fieldbus. The certified ASi Gateways are available in different versions with IP20 protection class, e.g., with integrated decoupling, OPC UA interface and integrated web server for easy diagnostics and maintenance.
EtherNet/IP + Modbus/TCP ASi
| Figure | Model |
Communication interface between fieldbus and gateway: interfaces for standardized fieldbus systems in industrial automation. PROFIBUS ASi gateway: interface for a PROFIBUS fieldbus
PROFIBUS ASi Basic gateway: interface for a PROFIBUS fieldbus PROFIBUS ASi IP65 gateway: interface for a PROFIBUS fieldbus EtherNet/IP+ Modbus TCP ASi gateway: interface for an EtherNet/IP+ ModbusTCP fieldbus BACnet/IP ASi gateway: interface for a BACnet/IP fieldbus Compact-/MicroLogix ASi gateway: interface for the Compact-/MicroLogix fieldbus POWERLINK ASi gateway: interface for an POWERLINK fieldbus OPC UA server: interface for the OPC UA communication
| ASi-5/ASi-3 | Standard devices"Single Master": 1 ASi network, 1 ASi-5/ASi-3 Master. 1 ASi network, 1 ASi-3 Master. 2 ASi networks, 2 ASi-5/ASi-3 Masters. 2 ASi networks, 2 ASi-3 Masters. Safety devices "Single Master" : 1 ASi network, 1 ASi-5/ASi-3 Master. 1 ASi network, 1 ASi-3 Master. 2 ASi networks, 2 ASi-5/ASi-3 Masters. 2 ASi networks, 2 ASi-3 Masters. | " yes, max. 4 A/ASi network ": Data decoupling integrated in the gateway. Cost-effective power for 2 ASi networks with 1 power supply (optionally supply of multiple Single Gateways by 1 power supply). Operation with short cable lengths with standard 24 V power supply possible.
Data decoupling integrated in the gateway. Cost-effective power for 2 ASi networks with 1 power supply (optionally supply of multiple Single Gateways by 1 power supply). Operation with short cable lengths with standard 24 V power supply possible.
Data decoupling integrated in the gateway. Optimized for use with 2 x UL certified 30 V/3 A power supplies with power limitation <100 W (BW4223). In combination 2 separate NEC Class 2 compliant ASi circuits are created.
1 ASi power supply per ASi network. Gateway is powered in normal operation from one of the two ASi power supplies. Should one ASi power supply fail, switching to the other ASi power supply allows all the diagnostics functions to be maintained and the unaffected ASi network continues to operate.
1 ASi power supply per ASi network. | "USB": Access to ASi Master and Safety Monitor with Bihl+Wiedemann proprietary software by using the USB interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface or Ethernet fieldbus interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet fieldbus interface or by using an adapter cable via RS 232 interface.
Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using an adapter cable via RS 232 interface.
The latest version of the device description file of the gateway/gateway with integrated safety monitor (GSD, GSDML, EDS, etc.) is available in the "Downloads" section of the respective device. | Detects whether the same address has been assigned to two ASi nodes. Frequent error when using a handheld addressing device. | Checks the ASi line for interference effects such as noise, external voltages, ... | Using a C-program offers the possibility to run mini-PLC functions with a gateway. | Article No. |
|---|---|---|---|---|---|---|---|---|---|---|
  |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
yes
|
yes
|
optional
| BWU3851 ASi-5/ASi-3 EtherNet/IP+ModbusTCP Gateway in Stainless Steel, 2 ASi-5/ASi-3 masters |
 |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 8 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
yes
|
yes
|
optional
| BWU4258 ASi-5/ASi-3 EtherNet/IP + Modbus TCP Gateway in Stainless Steel, 2 ASi-5/ASi-3 masters |
 |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus
|
yes
|
yes
|
no
| BWU3849 24 Volt ASi-5/ASi-3 EtherNet/IP + Modbus TCP Gateway in Stainless Steel, 1 ASi-5/ASi-3 master |
|
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 8 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
yes
|
yes
|
optional
| BWU4019 ASi-5/ASi-3 EtherNet/IP + Modbus TCP Gateway in Stainless Steel, 1 ASi-5/ASi-3 master |
 |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus
|
yes
|
yes
|
optional
| BWU3736 ASi-3 EtherNet/IP+ModbusTCP Gateway in Stainless Steel, 2 masters |
|
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
no, max. 8 A/ASi network, redundant supply
|
Ethernet fieldbus
|
yes
|
yes
|
optional
| BWU3735 ASi-3 EtherNet/IP+ModbusTCP Gateway in Stainless Steel, 2 masters |
 |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-3 compatible
|
1 ASi network, 1 ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus
|
yes
|
yes
|
no
| BWU3822 24 Volt ASi-3 EtherNet/IP + Modbus TCP Gateway in Stainless Steel, 1 ASi-3 master |
|
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-3 compatible
|
1 ASi network, 1 ASi-3 Master
|
no, max. 8 A/ASi network
|
Ethernet fieldbus
|
yes
|
yes
|
optional
| BWU3734 ASi-3 EtherNet/IP+ModbusTCP Gateway in Stainless Steel, 1 master |
 |
Starter Kits
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus
|
yes
|
yes
|
-
| BW4229 Small Starter Kit ASi-5/IO-Link via EtherNet/IP |
Safety, EtherNet/IP + Modbus/TCP ASi Gateways
The certified ASi gateways with integrated safety monitor are available in different versions with protection class IP20. All gateways feature the Safe Link technology, which makes it possible to connect different system components easily and flexibly. Some product variants offer integrated CIP Safety communication for easy integration of the safe signals into the safe Rockwell PLC.
Safety, EtherNet/IP + Modbus/TCP ASi
| Figure | Model |
Communication interface between fieldbus and gateway: interfaces for standardized fieldbus systems in industrial automation. PROFIBUS ASi gateway: interface for a PROFIBUS fieldbus
PROFIBUS ASi Basic gateway: interface for a PROFIBUS fieldbus PROFIBUS ASi IP65 gateway: interface for a PROFIBUS fieldbus EtherNet/IP+ Modbus TCP ASi gateway: interface for an EtherNet/IP+ ModbusTCP fieldbus BACnet/IP ASi gateway: interface for a BACnet/IP fieldbus Compact-/MicroLogix ASi gateway: interface for the Compact-/MicroLogix fieldbus POWERLINK ASi gateway: interface for an POWERLINK fieldbus OPC UA server: interface for the OPC UA communication
| ASi-5/ASi-3 | Standard devices"Single Master": 1 ASi network, 1 ASi-5/ASi-3 Master. 1 ASi network, 1 ASi-3 Master. 2 ASi networks, 2 ASi-5/ASi-3 Masters. 2 ASi networks, 2 ASi-3 Masters. Safety devices "Single Master" : 1 ASi network, 1 ASi-5/ASi-3 Master. 1 ASi network, 1 ASi-3 Master. 2 ASi networks, 2 ASi-5/ASi-3 Masters. 2 ASi networks, 2 ASi-3 Masters. | " yes, max. 4 A/ASi network ": Data decoupling integrated in the gateway. Cost-effective power for 2 ASi networks with 1 power supply (optionally supply of multiple Single Gateways by 1 power supply). Operation with short cable lengths with standard 24 V power supply possible.
Data decoupling integrated in the gateway. Cost-effective power for 2 ASi networks with 1 power supply (optionally supply of multiple Single Gateways by 1 power supply). Operation with short cable lengths with standard 24 V power supply possible.
Data decoupling integrated in the gateway. Optimized for use with 2 x UL certified 30 V/3 A power supplies with power limitation <100 W (BW4223). In combination 2 separate NEC Class 2 compliant ASi circuits are created.
1 ASi power supply per ASi network. Gateway is powered in normal operation from one of the two ASi power supplies. Should one ASi power supply fail, switching to the other ASi power supply allows all the diagnostics functions to be maintained and the unaffected ASi network continues to operate.
1 ASi power supply per ASi network. | "USB": Access to ASi Master and Safety Monitor with Bihl+Wiedemann proprietary software by using the USB interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface or Ethernet fieldbus interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface. Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet fieldbus interface or by using an adapter cable via RS 232 interface.
Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using an adapter cable via RS 232 interface.
The latest version of the device description file of the gateway/gateway with integrated safety monitor (GSD, GSDML, EDS, etc.) is available in the "Downloads" section of the respective device. | Safety communication | Inputs Safety, SIL 3, Cat. 4 | Outputs Safety, SIL 3, cat. 4 | Detects whether the same address has been assigned to two ASi nodes. Frequent error when using a handheld addressing device. | Checks the ASi line for interference effects such as noise, external voltages, ... | Using a C-program offers the possibility to run mini-PLC functions with a gateway. | Article No. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
CIP Safety over EtherNet/IP + Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3857 ASi-5/ASi-3 CIP Safety over EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 2 ASi-5/ASi-3 masters |
 |
Gateway with integrated ASi-5/ASi-3 Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3958 ASi-5/ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated ASi-5/ASi-3 Safety Monitor, 2 ASi-5/ASi-3 masters |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3825 ASi-5/ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 2 ASi-5/ASi-3 masters |
 |
Gateway with integrated ASi-5/ASi-3 Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3957 ASi-5/ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated ASi-5/ASi-3 Safety Monitor, 1 ASi-5/ASi-3 master |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-5 + ASi-3 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3866 ASi-5/ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 1 ASi-5/ASi-3 master |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
CIP Safety over EtherNet/IP + Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3683 ASi-3 CIP Safety over EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 2 ASi masters |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3543 ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 2 ASi masters |
|
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
no, max. 8 A/ASi network, redundant supply
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3544 ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 2 ASi masters |
|
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP
|
ASi-3 compatible
|
1 ASi network, 1 ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet fieldbus + Ethernet diagnostic
|
Safe Link
|
3 x 2 channels
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3542 ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated Safety Monitor, 1 ASi master |
GE Digital Achilles® Robustness Test (Level 1 and 2, Version No. 3.18)
Ethernet fieldbus interface (PROFINET, EtherNet/IP) and Ethernet diagnostic interface of the ASi-5/ASi-3 gateways are submitted to strict robustness testing via the Achilles Test Software to ensure robustness against vulnerabilities to cyber attacks. The field update capabilities of the gateway enable continuous firmware and security updates to continuously improve the functionality and robustness of the device.
EtherNet/IP Master Simulator
EtherNet/IP Master Simulator software is a simple, universal tool for the exchange of data with EtherNet devices of almost all manufacturers.
EtherNet/IP Master Simulators allow data exchange with many EtherNet/IP devices even without an EtherNet/IP Master. They also support the use of EDS files and allow specific configuration entries to start data exchange with EtherNet/IP devices. Identification, renaming, and address assignment of EtherNet/IP devices is also possible.
EtherNet/IP Master Simulator
| Figure | Type | Safety fieldbus | Log function of I/O data | Sending of acyclic data | Article No. |
|---|---|---|---|---|---|
 |
EtherNet/IP Master Simulator
|
CIP Safety
|
yes
|
no
| BW4693 EtherNet/IP Master Simulator Plus, One-Year License |