subnet, increasing the number of machines that can be controlled and segmenting the machine-level network from the database network and the factory-level network. Network segmentation also reduced cyber-attack risk by limiting access to the different subnets. These controllers sit at the apex of the network architecture and support a variety of control, information, and safety functions, including (Figure 3):
■ Control
■ Up to 32 axes of motion with 250 μs cycle time
■ Servo control with up to 64 axes
Figure 3: NX502 controllers (center) can combine all the functions needed to implement Industry 4.0 automation networks. (Image source: Omron Automation)
■ 80 MB program storage
■ 260 MB variable storage
■ Information
■ Up to 10 x 1 Gbps EtherNet/ IP ports for high‐speed, high‐ capacity communications with expansion unit
Human-machine interface The NA series advanced programmable terminal/HMI provides operators and network engineers reliable and convenient access to Sysmac automation devices and networks. These wide- screen terminals have two Ethernet ports supporting simultaneous access to a control device and maintenance activities. They are programmable, making it simple to implement custom user interfaces.
■ OPC UA provides secure connectivity for manufacturing execution systems (MES) and enterprise resource planning (ERP) systems ■ SQL functionality supports fast and reliable direct access to databases and communication of production data ■ MQTT supports direct connection to the cloud and secure data collection
■ Safety
■ Up to 8 CIP Safety networks for network modularization and safety control across production lines ■ Up to 254 FSoE connections for high speed and high- reliability safety in large production lines
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