| Number of Ports |
I-8142iW = 2; I-8144iW = 4 |
| Interface |
Isolated RS-422/485 (The RS-422 and RS-485 cannot be used simultaneously)
RS-422: TxD+, TxD-, RxD+, RxD-, GND
RS-485: Data+, Data-, GND |
| 2-wire Cabling/4-wire Cabling |
Belden 8941 (2P twisted-pair cable)/ Belden 8942 (4P twisted-pair cable),
When different cables are used, the transmission distance may change |
| Transfer Distance |
Max. 1,200m for speed 9.6K bps; Max. 400m for speed 115.2K bps |
| Supports Max Devices |
Maximum 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. |
| Interrupt |
Shared Interrupt |
| Bus |
Parallel I/O Module |
| 4kV ESD Protection |
Yes, Contact for each port |
| Intra-module Isolation, Field to Logic |
2500 Vrms |
| Connector |
Removable 20-pin Terminal Block |
| Software |
| Support interrupt driven software library |
| Support VxCOM library |
| LED Display |
| I-8142iW |
I-8144iW |
| 1 LED as Power Indicator |
1 LED as Power Indicator |
| 2 LEDs as Communication (TxD) Indicators |
4 LEDs as Communication (TxD) Indicators |
| 2 LEDs as Communication (RxD) Indicators |
4 LEDs as Communication (RxD) Indicators |
| Power Consumption |
| I-8142iW(Without Resistor) |
0.3 A @ 5 V ,¡Ó 5 % |
I-8142iW
(With 2 Resistors, 1/4 Watt, 120 Ohm 5%) |
0.4A @ 5V ,¡Ó 5 % |
| I-8144iW(Without Resistor) |
0.35A @ 5V ,¡Ó 5 % |
I-8144iW
(With 4 Resistors, 1/4 Watt, 120 Ohm 5%) |
0.6A @ 5V ,¡Ó 5 % |
| Environment |
| Operating Temperature |
-25 ~ 75 ¢XC |
| Storage Temperature |
-30 ~ 80 ¢XC |
| Humidity |
10 ~ 95% RH, non-condensing |
| Dimensions |
| 30mm x 85mm x 114mm (W x L x H) Detail |
