ABB AC500 V3 Ethernet example features at a glance

OPC UA server

Data connectivity

OPC UA, Unified Architecture, is a protocol for

information exchange for industrial communica

tion. This means that OPC UA is a standardized

vendor-independent Ethernet protocol, scalable

for a lean data access between a client and server.

OPC UA is widely adopted in many different

industries like automotive, food and beverage,

utilities and infrastructure.

OPC UA fulfills the requirements of IoT and

Industry 4.0. Security is established based on

certificates. AC500 V3 supports the OPC UA

services “Data access”, “User management” and

“Alarm and conditions”.

MQTT

Cloud connectivity

MQTT is a TCP/IP messaging protocol mainly

used for lightweight messaging to the cloud.

In the environment of MQTT, edge devices like

controllers act as clients and communicate with

a broker situated in the cloud.

They publish data based on events using topics.

Other clients like SCADA systems or monitoring

applications can subscribe to these topics and

receive data as they arrive. This enables the easy

and low-bandwidth connection of many devices.

AC500 V3 uses TLS encryption to establish secure

communication.

Secure connectivity

Remote units

AC500 works as edge-gateway and is directly

connected to the cloud. Security is established

through TLS encryption.

• No additional gateway required

• Low latency

Application:

Small systems with non-critical data transfer.

Network security

Connection of the whole AC500 network to the

cloud using a separate gateway. Enhanced

security is provided through additional firewall

and/or VPN.

• Advanced level of security

• Easy integration of many edge devices

Application:

Large systems with many devices which need

higher protection.