Description
The NI-9871 is a 4-Port RS422/RS485 Serial Module designed for industrial communication interfaces, bearing the part number 779892-01. This module is equipped with four 10P10C-DE9 cables measuring 1 meter in length, ensuring robust connectivity options for a variety of industrial applications.
The serial interface supports both RS485 and RS422 protocols, making it versatile for different communication needs. It boasts a maximum baud rate of 3.6864 Mbps, allowing for high-speed data transmission. Additionally, the module offers ±15 kV of data line ESD protection, safeguarding against electrostatic discharge damages.
With a maximum cable length of 1.2 km (4,000 ft.), the NI-9871 facilitates extended connectivity across large industrial setups. Power efficiency is also a hallmark of this module, with a maximum active power consumption of 0.5 Watts and a standby/sleep power consumption of just 50 µWatts. It requires an external power supply of 3.5 Watts (max) from +8 to +28 VDC, ensuring operational efficiency and reliability.
For enhanced safety and durability, the module features port-to-earth ground isolation of 60 VDC continuous and can withstand isolation up to 1000 Vrms. The connector type includes a four-position, female pigtail alongside a DB-9 male front panel connector, providing flexible and secure connection points for various industrial communication needs.
| Specification | Detail |
|---|---|
| Part Number | 779892-01 |
| Category | Industrial Communication Interfaces |
| Model | NI-9871 |
| Description | 4-Port RS422/RS485 Serial Module W/ Qty. 4 10P10C-DE9 Cables 1m |
| Serial Interface | RS485/RS422 |
| Maximum Baud Rate | 3.6864 Mbps |
| Data Line ESD Protection | ±15 kV |
| Maximum Cable Length | 1.2 km (4,000 ft.) |
| Power Consumption (Active) | 0.5 Watts (max) |
| Power Consumption (Standby/Sleep) | 50 µWatts (max) |
| External Power Supply | 3.5 Watts (max) from +8 to +28 VDC |
| Port-to-Earth Ground Isolation | 60 VDC continuous |
| Withstand Isolation | Up to 1000 Vrms |
| Connector Type | Four-position, female pigtail; DB-9 male front panel connector |
