The Allen-Bradley 1403-NENET is an Ethernet communication card that is microprocessor-controlled. The communication card is meant to be interfaced with the Powermonitor II module, adding 3 communication ports to the Powermonitor module. The 1403-NENET card is capable of connecting to SLC-5/05 and PLC-5 Ethernet processors. Additionally, the 1403-NENET has a communication rate of 10 megabytes per second, it is software-configured, and it accommodates user-supplied network routers and bridges. The 1403-NENET has built-in capabilities for accessing the internet. The web capabilities are accessed through a browser by feeding the address of the Powermonitor II module (IP address) in the address box.

The 3 communication ports on the 1403-NENET card are a 10BaseT port, a 10Base5 port, and an RS-232 port. For the proper functioning of the Ethernet communication card,  the Internet Protocol (IP), Physical Ethernet Port (PEP), Subnet Mask, and Gateways must be provided and configured correctly using the Master Module. The 1403-NENET features four LED indicators (RDY, LK, RX, TX) which assist in troubleshooting and monitoring. While handling the 1403-NENET, the electrostatic discharge should be properly compensated for to avoid physically damaging the master module and the card. As with other Ethernet communication cards, the 1403-NENET can be configured using the RS-232 port on the card or by using the display module. The RS-232 serial port is used to connect the 1403-NENET to a computer after which the hyper terminal or any other communication application is run aiding in the setting up of the baud rate of 38,400, 8 data bits, and a single stop bit. The parity and flow control parameters are left blank. An RJ-45 cable is used to interface the 1403-NENET with an Ethernet hub through the 10BaseT port.