This manual provides usage instructions for the Fourstar SC-485A, a miniature unpowered RS232/RS485 converter designed for industrial control equipment.
The Fourstar SC-485A is a miniature unpowered RS232/RS485 converter designed specifically for industrial control equipment such as PLCs, touch screens, and VVVF drives. It features a compact size suitable for tight installation spaces and integrates seamlessly with devices like Siemens S7-1200 PLCs. The converter operates without external power, drawing energy from the RS232 interface lines (TXD, DTR, RTS), and includes surge protection and communication status indicators. This manual is written in Chinese.
| Max Communication Rate | 230Kbps |
|---|---|
| Max Communication Distance | 1200m at 115.2Kbps |
| Max Nodes | 64 |
| Dimensions | 16mm x 34mm x 36mm |
| Operating Temperature | -40 to +85 C |
No, it is unpowered and draws electricity from the RS232 interface lines (TXD, DTR, RTS).
Set the switch to ON for the two nodes at the ends of the bus, and OFF for all intermediate nodes.
The maximum distance is 1200 meters at 115.2Kbps and 2000 meters at 9.6kbps.