Product pictures Product Overview: B&R 7IF321.7 Parameter Specification Manufacturer B&R Industrial Automation Model 7IF321.7 Product Series 2003 Series PLC System Device Type Serial communication interface module Interface Type 1× RS485 / RS422 serial port Application & Fault Scenarios Typical Uses: Adds RS485/RS422 serial communication capability to B&R 2003 Series PLC systems. Connects to serial devices such as barcode scanners, weighing scales, temperature controllers,