大多数工业计算机系统提供标准的RS-232串口.尽管被广泛接受，但RS-232的传输速度、范围和联网能力有限.RS-422和RS-485标准通过对数据和控制信号使用差分电压线来克服这些限制，后者透明地将RS-232信号转换为隔离的RS-422或RS-485信号，而不需要改变任何硬件或软件。泓格科技的I-7520/I-7520A允许您使用标准PC硬件轻松地构建一个工业级的远程通信系统。
I-7520和I-7520R/AR之间的隔离设计是不同的。如果用户想从PLC/PC上供电，应该使用I-7520R/AR，否则隔离将被打破。有关详细信息，请参阅I-7000总线转换器手册。
- RS-485自动方向控制
- RS-232/422/485数据线路的ESD保护
- 功率输入，+10~+30V直流电
- 3000 V直流电RS-485侧隔离保护
- 传输速度可达115200 bps
- 操作温度-25°C~+75°C
| I-7520 CR | Isolated RS-232 to RS-485 Converter (RoHS) |
| I-7520A CR | Isolated RS-232 to RS-422/485 Converter (RoHS) |
| I-7520-G CR | Isolated RS-232 to RS-485 Converter (Gray Cover) (RoHS) |
| I-7520A-G CR | Isolated RS-232 to RS-422/485 Converter (Gray Cover) (RoHS) |
| I-7520R CR | RS-232 to Isolated RS-485 Converter (RoHS) |
| I-7520AR CR | RS-232 to Isolated RS-422/485 Converter (RoHS) |
| I-7520R-G CR | RS-232 to Isolated RS-485 Converter (Gray Cover) (RoHS) |
| I-7520AR-G CR | RS-232 to Isolated RS-422/485 Converter (Gray Cover) (RoHS) |
| Models | I-7520 | I-7520R | I-7520A | I-7520AR | |
| Serial Interface | RS-232 | TxD, RxD, GND | |||
| RS-422 | – | TxD+, TxD-, RxD+, RxD The RS-422 and RS-485 cannot be used simultaneously |
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| RS-485 | 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 tran***ission distance may change) |
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| Self-Tuner Asic Inside | Yes | ||||
| Speed | 300 ~ 115200 bps | ||||
| ESD Protection | Yes | ||||
| 3000 VDC Isolation on CH1 ~ CH4 | on RS-232 side | on RS-485 side | on RS-232 side | on RS-485 side | |
| Connection | RS-232 | 9-Pin Female D-Sub | |||
| RS-422/485 | Removable 10-Pin Terminal Block | ||||
| LED Indicators | |||||
| Power/Communication | Yes | ||||
| Power | |||||
| Input Voltage Range | +10 VDC ~ +30 VDC (Non-isolated) | ||||
| Power C***umption | 1.2 W | ||||
| Mechanical | |||||
| Casing | Plastic | ||||
| Flammability | Fire Retardant Materials (UL94-V0 Level) | ||||
| Dimensi*** (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 | ||||