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. Bihl+Wiedemann offers a wide range of gateways for common fieldbus interfaces:
| The device communicates via the standard ASi-3 and/or ASi-5. | 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. | Access to ASi master and safety monitor via own software from Bihl+Wiedemann using the diagnostic interface (e.g. USB, RJ45, RS232). For certain devices with Ethernet-based fieldbus (PROFINET, EtherNet/IP), there is also the option of diagnostics and configuration directly via the fieldbus 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. |
|---|---|---|---|---|---|---|---|---|---|---|
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Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 8 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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, REST API
|
ASi-3 compatible, ASi-5 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, REST API
|
ASi-3 compatible, ASi-5 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 8 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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, REST API
|
ASi-3 compatible
|
2 ASi networks, 2 ASi-3 Masters
|
yes, max. 8 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
yes
|
yes
|
optional
| BWU4957 ASi-3 EtherNet/IP™ + Modbus TCP Gateway in stainless steel, 2 ASi-3 Masters |
 |
Gateway
|
EtherNet/IP, Modbus/TCP, OPC UA, REST API
|
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, REST API
|
ASi-3 compatible
|
1 ASi network, 1 ASi-3 Master
|
yes, max. 8 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
yes
|
yes
|
optional
| BWU4958 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
|
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, REST API
|
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. Bihl+Wiedemann offers a wide range of gateways for common fieldbus interfaces:
| The device communicates via the standard ASi-3 and/or ASi-5. | 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. | Access to ASi master and safety monitor via own software from Bihl+Wiedemann using the diagnostic interface (e.g. USB, RJ45, RS232). For certain devices with Ethernet-based fieldbus (PROFINET, EtherNet/IP), there is also the option of diagnostics and configuration directly via the fieldbus 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 | Safe inputs can be configured as 1-channel or 2-channels depending on the desired application or PL and SIL level.
| Suitable for applications up to category 4/PLe/SIL 3. | 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, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
Safe Link
|
3 x 2 channels, 6 x 1 channel
|
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, 6SI/6SO |
 |
Gateway with integrated ASi-5/ASi-3 Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, optimized for 2 x NEC class 2 power supplies
|
Ethernet diagnostic, Ethernet fieldbus
|
Safe Link
|
3 x 2 channels, 6 x 1 channel
|
6 release circuits, 6 x electronic safe outputs
|
yes
|
yes
|
optional
| BWU3947 ASi-5/ASi-3 EtherNet/IP + ModbusTCP Gateway with integrated ASi-5/ASi-3 safety monitor, 2 ASi-5/ASi-3 masters, 6SI/6SO |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA, REST API
|
ASi-3 compatible, ASi-5 compatible
|
2 ASi networks, 2 ASi-5/ASi-3 Masters
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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, REST API
|
ASi-3 compatible, ASi-5 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
Safe Link
|
3 x 2 channels, 6 x 1 channel
|
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, 6SI/6SO |
 |
Gateway with integrated Safety Monitor
|
EtherNet/IP, Modbus/TCP, OPC UA, REST API
|
ASi-3 compatible, ASi-5 compatible
|
1 ASi network, 1 ASi-5/ASi-3 Master
|
yes, max. 4 A/ASi network
|
Ethernet diagnostic, Ethernet fieldbus
|
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 |
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 |