The I-8142iW-G provides 2 isolated RS-422/485 serial ports, while the I-8144iW-G provides 4 isolated RS-422/485 serial ports. It is equipped with a 128-byte hardware FIFO for each port and offers speeds up to 115.2 kbps with support for RS-422 full-duplex communication.
In the harsh industrial environment, the onboard ESD protection devices can divert this potentially damaging charge away from sensitive circuitry and protect the I-8142iW/I-8144iW from permanent damage.
The serial communication modules are designed for use with intelligent devices like bar code readers, serial printers, intelligent sensors, instrumentation equipment, computers, and almost any device with an RS-422/485 port.
Serial Port with +/-4 kV ESD Protection
Baud Rate of up to 115200 bps
Built-in Self-Tuner or Auto-Direction Control
Low power consumption
2500 Vrms Isolation
Internal 128-byte Hardware FIFO for each Port
LED Indicators for TxD, RxD and Power Status
RoHS Compliant & no Halogen
Made from fire-retardant materials (UL94-V0 Level)
Factory, Building and Home Automation
Supports interrupt driven software library
Supports VxCOM library
Number of Ports
Isolated RS-422/485 (The RS-422 and RS-485 can not be used simultaneously)
RS-422: TxD+, TxD-, RxD+, RxD-, GND
RS-485: D+, D-, GND
2-wire Cabling/4-wire Cabling
Belden 9841 (2P twisted-pair cable)/Belden 9842 (4P twisted-pair cable),
If different cables are used, the transmission distance may change
Max. of 1,200 m at 9.6 kbps; Max. of 400 m at 115.2 kbps
Max. of 256 devices. in a single RS-485 network without using a repeater