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.
- High-profile Module
- 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)
| Models |
I-8142iW |
I-8144iW |
| RS-422/485 Interface |
| Number of Ports |
2 |
4 |
| Interface |
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 |
| Transfer Distance |
Max. of 1,200 m at 9.6 kbps; Max. of 400 m at 115.2 kbps |
| 4-wire Cabling |
Max. of 256 devices. in a single RS-485 network without using a repeater |
| Controller |
16C950 Compatible |
| Speed: 115200 bps max. |
| Data Bit: 5, 6, 7, 8 |
| Stop Bit: 1, 1.5, 2 |
| Parity: None, Even, Odd, Mark, Space |
| FIFO: Internal 128 bytes for each port |
| Self-Tuner Asic inside |
Yes |
| Bus |
Parallel I/O Module |
| Connector |
DB-37 (Female) |
| Connector |
Removable 20-Pin Terminal Block |
| Intra-module Isolated, Field to Logic |
2500 Vrms |
| ESD Protection |
+/-4 kV (Contact for each channel) |
| Models |
I-8142iW |
I-8144iW |
| LED Indicators |
| Power |
1 LED |
| TxD |
2 LEDs |
4 LEDs |
| RxD |
2 LEDs |
4 LEDs |
| Power |
| Power Consumption |
1.5 W (Without Resistor) |
1.75 W (Without Resistor) |
| 2 W (With 2 Resistors, 1/4 Watt, 120 Ω 5%) |
3 W (With 4 Resistors, 1/4 Watt, 120 Ω 5%) |
| Mechanical |
| Dimensions (W x L x H) |
30 mm x 102 mm x 115 mm |
| Environment |
| Operating Temperature |
-25 °C ~ +75 °C |
| Storage Temperature |
-30 °C ~ +80 °C |
| Humidity |
10 ~ 95% RH, non-condensing |
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