The Gemotech RemoDAQ-8520B User Manual provides setup, pin assignments, jumper settings, and wiring instructions for extending a serial port.
The RemoDAQ-8520B is a serial‑port expansion module that converts a single RS232/485 port (Com1) into two additional channels (Com2 and Com3), giving three configurable ports that can each operate in RS232 or RS485 mode. It is intended for applications that need extra serial interfaces while maintaining isolation and flexible power options.
The manual describes the module’s functions, pin assignments, jumper configurations for selecting work mode, and detailed wiring diagrams for both RS485 and RS232 operation. It also includes contact information for technical support and a brief copyright notice.
| Speed | Self tuner inside |
|---|---|
| Baud rate range | 300 ~ 115200 bps |
| Serial port work mode | Supports RS232/485, selectable by switch |
| Power supply voltage | +10V ~ +30V DC |
| Isolated voltage | 3000 VDC |
It extends one RS232/485 port (Com1) into two additional channels (Com2 and Com3), giving a total of three configurable serial ports.
Use jumper JPA1,JPA2: set switches 1,2 ON and 3,4 OFF for RS232 mode, or set 1,2 OFF and 3,4 ON for RS485 mode.
The module operates from a DC supply of +10 V to +30 V.