Module ổn định đường truyền RS-485 ICP DAS tM-SG4

Thương hiệu: ICP DAS | Tình trạng: Còn hàng
Liên hệ

tM-SG4 CR RS-485 Pull-high/Pull-low and Termination Resistor Module (RoHS)

Gọi 0904251826 để được trợ giúp

Module ổn định đường truyền RS-485 ICP DAS tM-SG4

Features

  • Switch-selectable Pull-high/Pull-low Resistors

  • 15-step Switch-selectable Termination Resistor

  • LED Indicator for Power/Termination

  • DIN-Rail mountable

  • Cost-effective

  • Wide Operating Temperature Range: -25 °C ~ +75 °C

Introduction

The tM-SG4 is an optional module that is used to improve the communication of RS-485 network. It provides switch selectable pull-high and pull-low resistors on RS-485 network. It also has 15-step switch selectable termination resistor such that the user can select a proper termination resistor to be connected to the RS-485 network easily. If the RS-485 network is not over 100 meters, the termination resistors are not needed. Otherwise, it may be necessary to insert two termination resistors at both end of the RS-485 network. It is not easy to calculate the value of a termination resistor on the RS-485 network. The best way to do this is to use an oscilloscope to check the RS-485 signal directly. If the impedance match of RS-485 network is OK, the oscilloscope will show a very nice square wave. If these square wave signals are distorted, the user will need to insert two termination resistors at both end of the RS-485 network.

Specification

RS-485 Interface

Pull-high/Pull-low Resistance

1 kΩ, 10 kΩ, 100 kΩ, Switch-selectable

Termination Resistance

15 Steps, 65 ~ 560 Ω

LED Indicators

Power

1 Red LED as Power Indicator

Termination Resistor

1 Green LED as Termination Indicator

EMS Protection

ESD (IEC 61000-4-2)

±4 kV Contact for Each Terminal

Power Requirements

Reverse Polarity Protection

Yes

Powered from Terminal Block

Yes, 10 ~ 30 VDC

Consumption

0.5 W Max.

Mechanical

Dimensions (W x L x H)

52 mm x 87 mm x 27 mm

Installation

DIN-Rail Mounting

Environment

Operating Temperature

-25 ~ +75 °C

Storage Temperature

-40 ~ +85 °C

Humidity

10 ~ 90% RH, Non-condensing

 

 

Termination Resistance Settings

120R

330R

470R

560R

Termination Resistance (Ω)

ON

ON

ON

ON

65

ON

ON

ON

OFF

74

ON

ON

OFF

ON

76

ON

OFF

ON

ON

81

ON

OFF

OFF

ON

99

ON

OFF

ON

OFF

96

ON

ON

OFF

OFF

88

ON

OFF

OFF

OFF

120

OFF

OFF

ON

ON

144

OFF

ON

ON

OFF

193

OFF

ON

OFF

ON

207

OFF

ON

OFF

OFF

330

OFF

OFF

ON

ON

256

OFF

OFF

ON

OFF

470

OFF

OFF

OFF

ON

560

 

Pull-high and Pull-low Settings

1k

10k

100k

RS-485 Data Line Status

OFF

OFF

OFF

No pull-high/pull-low on RS-485 data line

ON

OFF

OFF

1k [ pull-high and pull-low

OFF

ON

OFF

10k [ pull-high and pull-low

OFF

OFF

ON

100k [ pull-high and pull-low

 

Termination Resistance On/Off Switch

OFF

Termination Resistor do NOT work.

ON

Termination Resistor is worked, and TR LED is light

Download

Datasheet

Odering information

tM-SG4 CR

RS-485 Pull-high/Pull-low and Termination Resistor Module (RoHS)

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