产品特点：
- Incorporate Serial Devices in an Ethernet network
- "Virtual COM" Extend COM Ports
- Virtual COM on Windows NT 4.0, 2000/XP/2003 and Vista32
- Powerful Programmable Device Server
- Watchdog Timer suitable for use in harsh environments
- Power Reverse Polarity Protection
- Serial Port +/-4 kV ESD Protection Circuit
- Self-Tuner ASIC Controller on the RS-485 Port
- 5-digit LED Display (for versi*** with a display)
- RoHS Compliant with no Halogen
- Built-in High Performance MiniOS7 from ICP DAS
- 10/100 Base-TX Ethernet, RJ-45 Port
(Auto-negotiating, auto MDI/MDI-X, LED indicator) - ODM Service Is ***ailable
- Low power c***umption
- Palm-Sized with multiple Serial Ports
- Made from fire retardant materials (UL94-V0 Level)
规格：
| CPU | 80186-80 MHz or compatible | ||
| SRAM | 512 KB | ||
| Flash Memory | Flash ROM: 512 KB ; Erase unit is one sector (64 KB) ; 100,000 erase/write cycles | ||
| EEPROM | 16 KB; Data retention: 40 years; 1,000,000 erase/write cycles. | ||
| Built-in Watchdog Timer | Yes | ||
| Communication Interface | |||
| Non-isolated | COM1 | RS-232 (TxD, RxD, RTS, CTS,GND) | |
| COM2 | RS-485 (D2+, D2-,GND) | ||
| COM3 | RS-232 (TxD, RxD, RTS, CTS,GND) | ||
| COM4 | RS-232 (TxD, RxD, RTS, CTS,GND, DSR, DTR,DCD,RI) | ||
| Ethernet | 10/100 Base-TX, RJ-45 port (Auto-negotiating, auto MDI/MDI-X, LED indicator) | ||
| PoE | - | ||
| Data Bit | 7, 8: for COM1 and COM2 5, 6, 7, 8: for COM3 ~ COM4 | ||
| Parity | None, Even, Odd, Mark, Space | ||
| Stop Bit | 1, 2: for COM1 ~ COM4 | ||
| Baud Rate | 115200 bps Max. | ||
| LED Indicators | |||
| 5-digit 7 Segment | Yes, only for "D" versi*** | ||
| System | Red | ||
| PoE | - | ||
| Protection | Power Reverse Polarity Protection | ||
| Required Supply Voltage | +10 VDC ~ +30 VDC (non-regulated) | ||
| Power C***umption | PDS(M)-742D: 2.7 W | |
| Flammability | Fire Retardant Materials (UL94-V0 Level) | ||
| Dimension (W x H x D) | 72 mm x 123 mm x 35 mm (88 mm x 123 mm x 28 mm for "M" versi***) | ||
| Installation | DIN-Rail or Wall mounting | ||
| Casing | Fire Retardant Plastic (Metal for "M" versi***) | ||
| Environment | |||
| Operating Temperature | -25 ~ +75 °C | ||
| Storage Temperature | -40 ~ +80 °C | ||
| Humidity | 5 ~ 90% RH, non-condensing | ||