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.

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.

 

More about EtherNet/IP + Modbus/TCP ASi Gateways

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
PROFINET ASi gateway: interface for a PROFINET fieldbus

EtherNet/IP+ Modbus TCP ASi gateway: interface for an EtherNet/IP+ ModbusTCP fieldbus

BACnet/IP ASi gateway: interface for a BACnet/IP fieldbus
DeviceNet ASi gateway: interface for a DeviceNet fieldbus
ControlLogix ASi gateway: interface for the ControlLogix fieldbus

Compact-/MicroLogix ASi gateway: interface for the Compact-/MicroLogix fieldbus
EtherCat ASi gateway: interface for an EtherCat fieldbus

POWERLINK ASi gateway: interface for an POWERLINK fieldbus
CC-Link ASi gateway: interface for a CC-Link fieldbus
CANopen ASi gateway: interface for a CANopen fieldbus
RS 485 Modbus ASi gateway: interface for a Modbus/RTU; RS 485 fieldbus

OPC UA server: interface for the OPC UA communication

 

Fieldbus interface
ASi-5/ASi-3
Standard devices

"Single Master":

1 ASi network, 1 ASi-5/ASi-3 Master.

1 ASi network, 1 ASi-3 Master.

"Double 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.

"Double Master" :

2 ASi networks, 2 ASi-5/ASi-3 Masters.

2 ASi networks, 2 ASi-3 Masters.

"Optional ASi Safety coupling circuit" :
2 ASi networks, 1 ASi-3 Master.

Number of ASi networks, number of ASi Master

" 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.


" yes, max. 8 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.


"yes, optimized for 2 x NEC class 2 power supplies"

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.


"no, max. 8 A/ASi network, redundant supply ":

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.


" no, max. 8 A/ASi network ":

1 ASi power supply per ASi network.

Integrated decoupling, ASi current measurement in the gateway

"USB":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann proprietary software by using the USB interface.

"Ethernet fieldbus"
Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet fieldbus interface.

"Ethernet fieldbus + Ethernet diagnostic":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface or Ethernet fieldbus interface.

"Ethernet diagnostic":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface.

"Ethernet fieldbus + RS 232":

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.


"RS 232":

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.

Diagnostic and configuration interface

Detects whether the same address has been assigned to two ASi nodes. Frequent error when using a handheld addressing device.

Recognition of duplicate ASi addresses

Checks the ASi line for interference effects such as noise, external voltages, ...

ASi fault detector

Using a C-program offers the possibility to run mini-PLC functions with a gateway.

Programming in C
Article No.
BWU3851
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
BWU4258
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
BWU3849
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
BWU4019
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
BWU3736
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
BWU3735
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
BWU3822
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
BWU3734
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
BW4229
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
-

 

 

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
PROFINET ASi gateway: interface for a PROFINET fieldbus

EtherNet/IP+ Modbus TCP ASi gateway: interface for an EtherNet/IP+ ModbusTCP fieldbus

BACnet/IP ASi gateway: interface for a BACnet/IP fieldbus
DeviceNet ASi gateway: interface for a DeviceNet fieldbus
ControlLogix ASi gateway: interface for the ControlLogix fieldbus

Compact-/MicroLogix ASi gateway: interface for the Compact-/MicroLogix fieldbus
EtherCat ASi gateway: interface for an EtherCat fieldbus

POWERLINK ASi gateway: interface for an POWERLINK fieldbus
CC-Link ASi gateway: interface for a CC-Link fieldbus
CANopen ASi gateway: interface for a CANopen fieldbus
RS 485 Modbus ASi gateway: interface for a Modbus/RTU; RS 485 fieldbus

OPC UA server: interface for the OPC UA communication

 

Fieldbus interface
ASi-5/ASi-3
Standard devices

"Single Master":

1 ASi network, 1 ASi-5/ASi-3 Master.

1 ASi network, 1 ASi-3 Master.

"Double 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.

"Double Master" :

2 ASi networks, 2 ASi-5/ASi-3 Masters.

2 ASi networks, 2 ASi-3 Masters.

"Optional ASi Safety coupling circuit" :
2 ASi networks, 1 ASi-3 Master.

Number of ASi networks, number of ASi Master

" 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.


" yes, max. 8 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.


"yes, optimized for 2 x NEC class 2 power supplies"

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.


"no, max. 8 A/ASi network, redundant supply ":

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.


" no, max. 8 A/ASi network ":

1 ASi power supply per ASi network.

Integrated decoupling, ASi current measurement in the gateway

"USB":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann proprietary software by using the USB interface.

"Ethernet fieldbus"
Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet fieldbus interface.

"Ethernet fieldbus + Ethernet diagnostic":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface or Ethernet fieldbus interface.

"Ethernet diagnostic":

Access to ASi Master and Safety Monitor with Bihl+Wiedemann software by using the Ethernet diagnostic interface.

"Ethernet fieldbus + RS 232":

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.


"RS 232":

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.

Diagnostic and configuration interface
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.

Recognition of duplicate ASi addresses

Checks the ASi line for interference effects such as noise, external voltages, ...

ASi fault detector

Using a C-program offers the possibility to run mini-PLC functions with a gateway.

Programming in C
Article No.
BWU3857
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
BWU3958
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
BWU3825
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
BWU3957
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
BWU3866
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
BWU3683
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
BWU3543
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
BWU3544
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
BWU3542
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

 

 

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.

 

More about EtherNet/IP Master Simulators

EtherNet/IP Master Simulator

Figure Type Safety fieldbus Log function of I/O data Sending of acyclic data Article No.
BW4693
EtherNet/IP Master Simulator
CIP Safety
yes
no