ZDE ZP592 PCIe to 2 Channel RS485 2 Channel RS232 HAT Expansion Board for Raspberry Pi 5 PCIe to RS485 with Isolation RS232 Long Distance Communication Via RS485

This expansion board adds two RS485 ports and two RS232 ports for Raspberry Pi 5, which can meet your various needs to use Raspberry Pi 5, such as using the Raspberry Pi 5 to make robot to control robotic arm, industrial automation control system, data acquisition and monitoring systems, automotive electronics, etc. ^^ PCIE to 4-way USB 2.0 design, one USB 2.0 for 4-way RS485 RS232 serial port expansion, the other three USB 2.0 leads out through 1.25 mm 4Pin connector, which can extend the CM4 4G Mini module.

^^ Through the USB 2.0 high-speed interface to transfer out four serial ports, adopt the design of two RS232 and two RS485 (with power isolation). The two RS232 can be converted to TTL/CMOS level UART and lead out via 2.54 mm 3Pin pins. The 3Pin pins need to be soldered by yourself. ^^ The baud rate of RS232 can be more than 230Kbps (U0 and U3 can be up to 1.2M bps if carrying out actual measurement); The baud rate of RS485 can be up to 500Kbps (U1 and U2 can be up to 1.5M bps if carrying out actual measurement).

^^ RS232 is suitable for short-distance communication; while RS485 is suitable for long-distance, multi-point communication, supporting multiple devices to communicate over the network. RS485 is a wired transmission protocol, which is widely used in various communication systems due to its feature of long-distance, high-speed and multi-branch structure.