LG Electronics G3F-AD3A, G4F-AD3A, G6F-AD2A

Chapter 7 Buffer read/write instructions

7 - 9

[ Remote station ] [ Self station ]

Buffer memory

of A/D module CPU module

[ D ] [ S ]

[ D+n2-1 ]

‘n2’

words

[ S+n2-1 ]

‘n2’

words

- Code of remote special function modules are as followings;

Module Code

G3F-AD3A h40

G4F-AD3A hC0

G6F-AD2A h02

( For the codes of other special function modules, please refer

the user’s manual of the related special function module)

- An operation error occurs when [ S + n2 – 1 ] or [ D + n2 – 1 ] is exceeds the range of

specified device.

- Execution conditions

Input condition

RPUT

Executed only once Executed only once

Fnet

remote

module

Fnet

module

Station

No = ‘st’

Contents

Main Safety Precautions WARNING CAUTION CAUTION Safety Precautions Design Precautions CAUTION Installation Precautions Safety Precautions Wiring Precautions CAUTION Test Run and Maintenance Precautions CAUTION CONTENTS Chapter 1. INTRODUCTION Chapter 2. SPECIFICATIONS Chapter 3. INSTALLATION AND WIRING Chapter 4. FUNCTION BLOCK Chapter 5. GM PROGRAMMING Chapter 6. Buffer Memory Chapter 7. Buffer read/write instructions Chapter 8. MK Programming Chapter 9. DIMENSIONS Chapter 1 Introduction 1 Introduction 1.1 Features Chapter 1 Introduction 1.2 Terminology 1.2.1 Analog value : A 1.2.2 Digital value : D Chapter 1 Introduction 1.3 Analog-to-Digital conversion characteristics = 4000 Page 1.3.2 Current input 4000 currentinputMinimumcurrentinputMaximum moduleA/DofResolution = Chapter 2 . SPECIFICATIONS 2.1 General Specifications CAUTION 2.2 Performance Specifications ! ! CAUTION 2.3.1 G3F-AD3A 2.3.2 G4F-AD3A 2.3.3 G6F-AD2A Page REMARK Page 2.4.2 Current Input Characteristics 2.4.3 2.4.4 Analog input and Digital output characteristics 2.5.1 Sampling processing A/D conversion system 2.5.2 Averaging processing A/D conversion system 2.5 Processing specifications Chapter 3 Installation and wiring 3 Installation and wiring 3.1 Installation 3.1.1 Installation ambiance 3.1.2 Handling precautions Chapter 3 Installation and wiring 3.2 Wiring 3.2.1 Wiring precautions 3.2.2 Wiring examples Page CHAPTER 4. FUNCTION BLOCK G4F AD3A G6F AD2A G3F AD3A 4.1 Registration of the Function Block for A/D Conversion Module on the GMWIN 4.2 Function Block for Local Page 4.2.2 Module Reading-Array Type 1) G3F-AD3A, G4F-AD3A REMARK 1) G3F-AD3A, G4F-AD3A 2) G6F-AD2A 4.3 Remote Function Block 4.3.1 Module Initialization 1) G3F-AD3A, G4F-AD3A Page Chapter 4. FUNCTION BLOCK 4 - 8 4.3.2 Module Read ing 1) G3F-AD3A, G4F-AD3A Input REMARK Chapter 4. FUNCTION BLOCK 4 - 9 Input REMARK 4.4 Errors on Function Block 4 - 10 This shows errors and resolutions in accordance with them. Chapter 5. GM PROGRAMMING 5.1 Programming for Distinction of A/D Conversion Value Page Page Page A/D Conversion Value and Error Code on BCD Display Page Page 5.3 Programming for Loading the A/D Conversion Module on Remote I/O Station Chapter 5. GM PROGRAMMING 5 -9 4) Programming example Page Chapter 6 Buffer memory 6 Buffer memory 6.1 The configuration of buffer memory 6.1.1 G6F-AD2A 6 - 2 6.1.2 G3F-AD3A / G4F-AD3A value Remark * All 16-bit data Chapter 6 Buffer memory 6.2 The Contents and description of buffer memory 6.2.1 G6F-AD2A Page Page 6.2.2 G3F-AD3A / G4F-AD3A Page Page Chapter 7 Buffer read/write instructions 7 Buffer read/write instructions 7.1 Buffer read instructions 7.1.1 GET / GETP instruction Page 7.1.2 RGET instructions Page Page Chapter 7 Buffer read/write instructions 7.2 Buffer write instructions 7.2.1 PUT / PUTP instructions Page 7.2.2 RPUT instructions Page Page Page Chapter 8 MK Programming 8 MK Programming 8.1 Basic programming 8.1.1 G6F-AD2A 8.1.2 G3F-AD3A / G4F-AD3A Chapter 8 MK Programming 8.2 Example programming 8.2.1 A program for comparison of A/D converted value Page 8.2.2 Output the analog input value by 7-segment display Page 8.2.3 An A/D module mounted on a remote station