I have an old peristaltic pump with a 9 pin male sub-d socket labeled Gilson Serial Input Output Channel (GSIOC) that connects a master device to devices with RS422A specifications, or RS485 specifications. The GSIOC implements RS422A/RS485 transmitters and receivers.
Could any computer serve as a master device by simply connecting the pump and computer directly through a serial to USB converter with proper specifications?
Building from here could serial commands be written on and sent directly from the computer to the pump in order to control speed/rotor direction...etc? Or am I missing important conceptual understanding on how to remotely control the pump?