2~7 dagen

4-Port Isolated RS-422/485 Module

● High-profile Module
● 2500 vrms Isolation
● Serial Port with ±4kV ESD Protection
● Internal 128-byte Hardware FIFO for each Port
● Baud Rate of up to 115200 bps
● LED Indicators for TxD, RxD and Power Status
● Built-in Self-Tuner or Auto-Direction Control
● Low power consumption
● Made from fire retardant materials (UL94-V0 Level)

The ICPDAS Communication Module I-8144iW provides 4-isolated RS-422/485 serial ports. It is equipped with 128 bytes hardware FIFO for each port, offers speed up to 115.2 K bps and supports RS-422 full-duplex communication.


In the harsh industrial environment, the on board ESD protection devices can divert this potentially damaging charge away from sensitive circuitry and protect the ICPDAS Communication Module I-8144iW from permanent damage.


With different communication interface, the I/O modules can be classified to high communication speed (Parallel bus) 8K series modules and low communication speed (serial interface) 87K series modules.


There are two types of I/O modules, Parallel and Serial. The parallel modules (I-8 Series) are high-speed modules and support MCU (Main Control Unit) only.
Item I-87K Series
Communication Interface Parallel Bus
Protocol -
Communication Speed Fast
DI with Latched Function -
DI with Counter Input -
Power On Value -
Safe Value -
Programmable Slew-rate for AO Module -



High Profile VS Low Profile

With different form factor, I/O modules can be classified to high profile and low profile. Basically, high profile and low profile modules that with same item number also have same I/O channel number.

For example: I-8054 and I-8054W both has 8 DI and 8 DO.

Except I/O channel number, other specifications could be different. You have to double check whether the specifications suit your application.

For example: For I-8054W, its DI logic high level is +10 ~ +50V. But for I-8054, it is +3.5 ~ +30V



Meer informatie
Number of Ports 4
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. 1200 m for speed 9.6 Kbps; Max. 400 m for speed 115.2 Kbps
Supports Max Devices Maximum of 256 devices. in a single RS-485 network without using a repeater
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
Interrupt Driven Software Library
VxCOM Library
LED Indicators
1 LED Power Indicator
4 LEDs Communication (TxD) Indicators
4 LEDs Communication (RxD) Indicators
Power Consumption
Without Resistor 0.35 [email protected] V, ±5%
With 2 Resistors, 0.25 Watt, 120 Ω 5% 0.6 [email protected] V, ±5%
Dimensions (w x l x h) 30 x 85 x 114 mm
Operating Temperature -25 °C ~ 75 °C
Storage Temperature -30 °C ~ 80 °C
Humidity 10 ~ 95% RH, non-condensing
Mijn vraag gaat over: ICPDAS I-8144iW
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