A&D HV-G Series instruction manual 17.2 RS-422 / RS-485 / Relay output OP-04

Page 58

17.2 RS-422 / RS-485 / Relay output (OP-04)

Replacing RS-232C interface with this option, the RS-422/ RS-485 interface can connect up to 16 scales and control them from a computer.

The RS-422/ RS-485 interface has the following two modes.

Stream mode

Outputs data countinuouslly.

Command mode

Controls the scale using commands from a computer.

It is necessary to set the parameters of the “Baud rate ( f4 )”, “

Output mode (

f5 )”, “Format ( f15 )” in the function table in advance.

Transmission systemEIA RS-422/ RS-485

Transmission

Asynchronous, bi-directional, half-duplex

Data format

Baud rate:2400, 4800, 9600 bps

 

Data:

7 bits

 

Parity:

1 bit, Even

 

Start bit

1 bit

 

Stop bit

1 bit

 

Code

ASCII

 

Terminator

CR LF (CR: 0D[H], LF: 0A[H])

 

 

Address

01 ~ 99

Address parameter ( f10 ) of function table.

 

 

Relay

Solid-state-relay

 

 

 

 

 

 

Maximum voltage

DC50V

 

 

 

 

Maximum current

DC100mA

 

 

 

 

Maximum resistance 8 Ω

 

 

 

Mating connector

TM:BLA9 (of accessory pack)

 

 

 

Pin connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin No.

Signal name

Direction

Description

 

 

 

1

SDA

 

Output

RS-422 transmission A

terminal

 

2

SDB

 

Output

RS-422 transmission B

terminal

 

 

3

RDA

 

Input

RS-422 receive A terminal

 

 

 

 

Input / Output

RS-485 transmission/ receive A

 

 

 

 

 

terminal

 

 

 

4

RDB

 

Input

RS-422 receive B terminal

 

 

 

 

 

Input / Output

RS-485 transmission/ receive B

 

 

 

 

 

terminal

 

 

 

5

TRM -

 

 

120Ω terminator

 

 

 

6

HI

 

Output

Relay output of HI

 

 

 

7

OK

 

Output

Relay output of OK

 

 

 

8

LO

 

Output

Relay output of LO

 

 

 

9

COM -

 

 

Relay common terminal

 

 

HV-G Instruction Manual Page 57

Page 57 Page 59
Image 58
Page 57 Page 59
Contents HV-G Series Contents Page Compliance Compliance with FCC rulesOutline and Features Unpacking Accessories and Options list Type Products AccessoriesOrder code or option name Accessories Options ListPrecautions for Operating the Scale Precautions for Installing the ScalePrecautions for Storing the Scale Installing the Scale Installing the Batteries for Type L Names Display and Symbols OFFPage Switches Page Turning the Scale On/Off & Basic Weighing Basic OperationMemo Type L with Batteries Tare and Net Display Semi-Automatic Tare Input by WeighingOperation and Performance Weighing RangeWeighing Range Products Weighing RangeMode Switch Changing Unit & Mode Counting Mode Storing a Unit MassCounting the number of articles Percentage Mode Storing a 100% MassReading Percentage Accumulation Function Operation and SwitchesFunction table Meaning & Purpose Preparation Setting Parameters Operation and Performance Examples ExampleComparison Condition Comparator FunctionComparator Sign Function table Meaning and PurposeAccumulation function f6 Step If one Has Been selected, press Case Full/Dribble Batch Function Full/Dribble batch sub-function ComparatorHold Parameter and display an item of the full/dribble Switch to display the HI Simple Batch Function Function Table Meaning and purpose Simple batch functionPreparation Setting Parameters Operation and Performance Examples Calibration Adjusting the Scale Gravity Acceleration Table Complete Calibration Procedure Gravity Acceleration CorrectionCalibration of the Zero Point Procedure for Setting Parameters Function Table15.2 Parameter List Display Meaning and purpose Function or full/dribble batch functionPrinting condition when using option OP-06 for type Function to hold the current display value. When 16 RS-232C Serial Data Interface Data Format FormatFormat Stream Mode Preparation and Performance ExamplesCancel of tare Command ModeTare Preset tare Upper limit valueFinal value Preparation Setting Parameters Options Pin connections Pin No Signal name Direction Description17.1 RS-232C / Relay output / Buzzer OP-03 Pin No Signal name Direction Description 17.2 RS-422 / RS-485 / Relay output OP-04Installing OP-04 Communication Format Zero Lower limit valueAccumulation count output Reset of Accumulation data and numberAccumulation data output Final valueInternal Printer for Type V OP-06 SpecificationConsumables Disassembly InstallationPerformance Check Specifications HV-G seriesDimensions Page Repair MaintenanceCheck Points Before Calling Maintenance This situation Confirm these items
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