Description
The NI-9870 is a high-performance Serial RS232, 4 Port module designed to integrate seamlessly with CompactRIO systems. This versatile module features 4 RS232 DTE ports, ensuring robust communication capabilities across a wide range of applications. The NI-9870 adheres strictly to the ANSI/EIA/TIA-232 standard, guaranteeing reliable data transmission and conformance to industry norms.
There are two versions of the NI-9870 available: the 779891-02, which is not conformal coated, and the 779891-03, which includes conformal coating for additional protection against environmental factors. Each port on the module boasts a 64 B buffer size, allowing for efficient data processing and handling. Furthermore, the module supports impressive baud rates of up to 921.6 kbit/s per port, facilitating high-speed data communications.
Regarding power requirements, the NI-9870 operates efficiently with a maximum power consumption of 0.5 W during active use and a minimal 50 μW in sleep mode. It requires an external power supply of 8 to 28 VDC, making it suitable for a broad range of industrial applications. The module comes with an included PC-MF4-PT cable, supporting a maximum cable length equivalent to 250 pF, ensuring flexibility in system configuration.
Software compatibility is a key feature of the NI-9870, with support for the NI-RIO driver, as well as popular development environments such as LabVIEW, Visual C#, and Visual C++. This broad compatibility ensures that developers can easily integrate the module into their existing systems without the need for extensive modifications.
The module is lightweight, weighing in at just 5.4 oz, and is designed to operate within a temperature range of -40 °C to 70 °C, with a storage temperature range of -40 °C
| Specification | Details |
|---|---|
| Model | NI-9870 |
| Type | Serial, RS232, 4 Port |
| Compatible Frameworks | CompactRIO |
| Ports | 4 RS232 DTE ports |
| Conformance | ANSI/EIA/TIA-232 standard |
| Versions | 779891-02 (not conformal coated), 779891-03 (conformal coated) |
| Buffer Size | 64 B per port |
| Baud Rates | Up to 921.6 kbit/s per port |
| Power Consumption | Active: 0.5 W max, Sleep: 50 μW |
| External Power Supply | 8 to 28 VDC |
| Included Cable | PC-MF4-PT |
| Maximum Cable Length | 250 pF equivalent |
| Software Compatibility | NI-RIO driver, LabVIEW, Visual C#, Visual C++ |
| Weight | 5.4 oz |
| Operating Temperature Range | -40 °C to 70 °C |
| Storage Temperature Range | -40 °C to 85 °C |
| Vibration | Operating: 5 grms, 5g (10 to 500 Hz) |
Question 1: What is the max baud rate of NI-9870 per port?
Answer 1: Up to 921.6 kbit/s per port.
Question 2: What power supply does NI-9870 need?
Answer 2: 8 to 28 VDC external power supply.
Question 3: Does NI-9870 include a cable?
Answer 3: Yes, includes a PC-MF4-PT cable.
Question 4: What’s the operating temp range for NI-9870?
Answer 4: -40 °C to 70 °C.
Question 5: Is NI-9870 compatible with LabVIEW?
Answer 5: Yes, supports NI-RIO driver and LabVIEW.



