The Allen-Bradley 1404-M405A-RIO module has a remote I/O port for communication which allows for the concurrent use of another communication port (in other words, it allows for dual-port option), and this port is the RS-485 communication port. The remote I/O communication port has various communication features, including 3 rated settings for communication that are 230.3 Kbps, 115.2 Kbps, and 57.6 Kbps, and the Allen-Bradley 1404-M405A-RIO module has a 32-node capacity, 3048-meter (10,000-feet) maximum cable lengths, 11 discrete outputs, 2 discrete inputs, block transfers with minimum update rates of 50 milliseconds, discrete I/O with update rates of 5 milliseconds, all data access for the read/ write block transfer data tables, and a quarter of the rack slave devices.

The Allen-Bradley 1404-M405A-RIO PowerMonitor 3000 module has -RIO at the end of the catalog number that means that the module has a logical quarter rack of I/O, which requires the users to configure the RIO communication rate, RIO rack address, RIO last rack status, and the RIO rack address. The rack address in the scanner module has a range of 0 to 63 decimal values and A default value of 1. The logical group number should correspond to the quarter rack with a range of values of 0, 2, 4, or 6, and the default value is 0. In a PLC-2 bases system, set the last rack value to the highest-numbered group or lack on the channel with a range of 0 to 1 and the default value is 0. Lastly, configure the communication rate with a value of 230 Kbps, 115 Kbps, or 57.6 Kbps, and the default value is 57.6 Kbps. The Allen-Bradley 1404-M405A-RIO module requires an operating temperature range of 0 to 55 degrees Celsius (32 to 131 degrees Fahrenheit) and a storage temperature range of -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit).