source with a power consumption of 120 milliamperes (mA) at 12 volts and utilizes LED indicators to report its status. Housed in a compact enclosure, the controller is ingress protection (IP) rated at IP67, meaning it is dust-tight and protected against short-term immersion in water. It is rated to operate over a temperature range of -40 to +70°C. The DXMR90-X1 uses standard M12 connectors, with a single male M12 port (Port 0) for power and Modbus RS-485 connections, and a single female M12 port for daisy-
chaining the Port 0 connections. There are also four female M12 ports for the Modbus master connections and a female M12 D-Code Ethernet connector. The controller is coupled to remote sensors via a hub. The Banner Engineering R95C-8B21-KQ is an eight-port IO-Link hub (Figure 4) that offers an easy way to connect non- IO-Link devices to an IO-Link system. It connects two discrete channels to the eight four-pin M12 connector ports, which can be configured as 16 inputs or as 8 inputs and 8 outputs. Data from the channels is connected to an IO-Link master.
Two configurable I/O pins per port support PNP (sourcing) or NPN (sinking) outputs. LEDs that indicate port activity are placed on each side for mounting flexibility. The hub also supports host mirroring, where a selected port input or output discrete signal can be routed to the PLC or the host connection. The hub is rated to operate off 18 to 30 volts DC with a maximum current draw of 400 mA. It can supply a pass-through current of up to 500 mA per port and is protected against reverse polarity and power transients.
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