Description of serial port/CAN port
COM/CAN interface adopts 2*4P spring terminal, and RS232/RS485/RS422 can be selected.

The pins of SX58 are defined as shown in the figure below:
| Pin | RS232/CAN | RS422/CAN | RS485/CAN |
| 1 | CAN_1_H | CAN_1_H | CAN_1_H |
| 2 | RXD | TX+ | DATA+ |
| 3 | CAN_1_L | CAN_1_L | CAN_1_L |
| 4 | TXD | RX+ | - |
| 5 | VCC | VCC | VCC |
| 6 | - | TX- | DATA- |
| 7 | GND | GND | GND |
| 8 | - | RX- | - |