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产品介绍： RS-232转RS-485模块（隔离RS-232）
产品特点：
- True RS-485 Star Wiring Hub
- Power and data flow indicator for troubleshooting
- Easy-to-use rotary switch for fixed baud rate setting, 1200 ~ 115200 bps
- Power Input, +10 ~ +30 VDC
- Independent RS-485 driver for each channel
- Automatic RS-485 Direction Control
- 120 Ω termination resistor for each channel
- Operating Temperatures, -25 °C ~ +75 °C
- DIN-Rail
产品规格：
| Interface | |
| Input | 1 RS-232 Channel: TxD, RxD and GND |
| Output | 4 RS-485 Channels: Data+, Data- |
| Transfer Distance | Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps (Belden 9841 2P twisted-pair cable, if different cables are used, the transmission distance may change) |
| Self-Tuner Asic Inside | Yes |
| Speed | 300 ~ 115200 bps via Self-Tuner mode; 1200 ~ 115200 bps via Fixed Baud Rate mode |
| ESD Protection | Yes |
| 2500 VDC Three Way Isolated Protection | Yes |
| Connection | Removable 10-Pin Terminal Block x 1; 9-Pin Female D-Sub x 1 |
| LED Indicators | |
| Power/Communication | Yes |
| Power | |
| Input Voltage Range | +10 VDC ~ +30 VDC (Non-isolated) |
| Power Consumption | 1.2 W |
| Mechanical | |
| Casing | Plastic |
| Flammability | Fire Retardant Materials (UL94-V0 Level) |
| Dimensions (W x H x D) | 72 mm x 118 mm x 35 mm |
| Installation | DIN-Rail |
| Environment | |
| Operating Temperature | -25 °C ~ +75 °C |
| Storage Temperature | -30 °C ~ +75 °C |
| Humidity | 10 ~ 90% RH, non-condensing |
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