I-9144i CR ICP DAS RS422 RS485 Modules

• Includes 4 Isolated RS-422/485 Ports
• +/-4 kV ESD Protection on Each Port
• Baud Rate of up to 115200 bps
• LED Indicators for TxD, RxD and Power Status
• Internal 128-byte Hardware FIFO for Each Port
• 2500 Vrms Isolation
• Built-in Self-Tuner or Auto-Direction Control
• Low Power Consumption
• RoHS Compliant & Halogen Free
• Fire-retardant Materials Used (UL94-V0 Level)

INTRODUCTION

The I-9144i provides 4 isolated RS-422/485 serial ports. Each port is equipped with a 128-byte hardware FIFO 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-9144i 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.

I/O SPECIFICATIONS

RS-422/485 Interface
Ports: 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
 
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. 1,200 m at 9.6 kbps;
         Max. 400 m at 115.2 kbps
 
4-wire Cabling: A max. of 256 devices in a single RS-485 network without using a repeater
 
Controller: 16C850 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

SYSTEM SPECIFICATIONS

LED Display
System LED Indictors: 1 LED as Power Indicator
I/O LED Indicator: 4 LEDs as TxD Indicators;
         4 LEDs as RxD Indicators
 
Isolation
Intra-module Isolation, Field to logic: 2500 Vrms
 
EMS Protection
ESD(IEC 61000-4-2): ±4 kV Contact for Each Channel
 
Power
Power Consumption: 3 W (With 2 Resistors,1/4 Watt, 120 Ω 5%)
 
Mechanical
I/O Connector: Removable 20-Pin Terminal Block
Dimensions (L x W x H): 144 mm x 31 mm x 133 mm
 
Environment
Operating Temperature: -25 ~ +75°C
Storage Temperature: -40 ~ +85 °C
Humidity: 10 ~ 90% RH, non-condensing