LG G3F-AD4A User manual

User’s Manual
LG Programmable Logic Controller
LG Industrial Systems
G3F-AD4A
G3F-AD4B
G4F-AD2A

Be sure to read carefully the safety precautions given in data sheet and user’s manual before operating the module
and follow them.
The precautions explained here only apply to the G3F-AD4A , G3F-AD4B and G4F-AD2A.
For safety precautions on the PLC system, see the GLOFA GM3/4 CPU User’s Manuals and MASTER-
K200S/300S/1000S CPU User’s Manuals.
A precaution is given with a hazard alert triangular symbol to call your attention, and precautions are represented
as follows according to the degree of hazard.
However, a precaution followed with can also result in serious conditions.
Both of two symbols indicate that an important content is mentioned, therefore, be sure to observe it.
Keepthismanualhandyforyourquick reference in necessary.
SAFETY PRECAUTIONS
WARNING
!
If not provided with proper prevention, it can cause death or fatal
injury or considerable loss of property.
CAUTION
!
If not properly observed, it can cause a hazard situation to result
in severe or slight injury or a loss of property.
CAUTION
!
CAUTION
!
Design Precautions
▶Do not run I/O signal lines near to
high voltage line or power line.
Separate them as 100 mm or
more as possible. Oth
erwise,
noise can cause module ma
l-
function.
CAUTION
!
Installation Precautions
▶
Operate the PLC in the environ-
ment conditions given in the
generalspecifications.
▶If operated in other envi
ronment
not specified in the general
specifications, it can cause an
electric shock, a fire, malfunction
or damage or degradation of the
module
▶Make sure the module fixing pro-
jections is inserted into the mo
d-
ule fixing hole and fixed.
▶Improper installation of the mo
d-
ule can cause malfunction, di
s-
order or falling.

CAUTION
!
WiringPrecautions
▶When grounding a FG terminal, be sure to provide class 3 grounding which is dedicated to
the PLC.
▶Before the PLC wiring, be sure to check the rated voltage and terminal arrangement for
the module and observe them correctly.
If a different power, not of the rated voltage, is applied or wrong wiring is provided, it can
cause a fire or disorder of the nodule.
▶
Drive the terminal screws firmly to the defined torque.
If loosely driven, it can cause short circuit, a fire or ma
lfunction.
▶
Be careful that any foreign matter like wire scraps should not enter into the module.
It can cause a fire, disorder or malfunction.
WARNING
!
Test Run and Maintenance
Precautions
▶Do not contact the terminals
while the power is applied.
It can cause malfunction.
▶
When cleaning or driving a term
i-
nal screw, perform them after the
power has been turned off
▶Do not perform works while the
power is applied, which can
cause disorder or malfunction.
CAUTION
!
▶
Do not separate the module from
the printed circuit board(PCB), or
do not remodel the module.
They can cause disorder, mal-
function, damage of the module
ora fire.
When mounting or dismounting
the module, perform them after
the power has been turned off.
▶
Do not perform works while the
power is applied, which can
cause disorder or malfunction.
CAUTION
!
Waste Disposal Precautions
▶When disposing the module, do it as an industrial waste.

◎
CONTENTS
◎
Chapter1. INTRODUCTION
1.1 Features·································································································································································1-1
1.1.1 G3F-AD4A/G3F-AD4B ··································································· 1-1
1.1.2 G4F-AD2A ············································································ 1-1
1.2 Glossary·································································································································································1-2
1.2.1 A-Analog Value ········································································ 1-2
1.2.2 D-DigitalValue ········································································· 1-2
1.2.3 Analog / DigitalConversion Characteristics ·················································· 1-3
Chapter2. SPECIFICATIONS
2.1 General Specifications ··································································································································2-1
2.2 Performance Specifications ·······················································································································2-2
2.3 Names of Parts and Functions ··················································································································2-3
2.3.1 G3F-AD4A ············································································ 2-3
2.3.2 G4F-AD2A ············································································ 2-5
2.3.3 G3F-AD4B ············································································ 2-6
2.4 I/O Conversion Characteristics ·················································································································2-7
2.4.1 G3F-AD4A I/OCharacteristics ··························································· 2-8
1) Voltage Input Characteristics ······························································ 2-9
2) Current Input Characteristics ····························································· 2-10
3) Simultaneous Voltage andCurrent Input Characteristics ········································2-11
2.4.2 G4F-AD2A I/OCharacteristics ··························································· 2-12
1) Voltage Input Characteristics ····························································· 2-12
2) Current Input Characteristics······························································ 2-14
3) Simultaneous Voltage andCurrent Input Characteristics ······································· 2-15
2.4.3 G3F-AD4B I/OCharacteristics ··························································· 2-16
1) Voltage Input Characteristics ····························································· 2-17
2) Current Input Characteristics······························································ 2-17
3) Simultaneous Voltage andCurrent Input Characteristics ······································· 2-18
4)The connection between Analog input and Digital output ······································· 2-18

2.4.4 The connection between Offset/ Gain Setting andDigital OutputValue ··························· 2-19
1) Resolution ··········································································· 2-19
2) Relations between Maximum Resolution and Digital Output Value ······························· 2-19
3) Offset/ Gain Setting ··································································· 2-20
(1) Offset/G ain Setting of the G3F-AD4A ················································· 2-20
(2) Offset/G ain Setting of the G4F-AD2A ·················································· 2-22
2.5 A/D Conversion Characteristics················································································································2-24
2.5.1 FilterProcessing ······································································ 2-24
2.5.2 Sampling Processing (Instantaneous Value) ················································ 2-25
2.5.3 Average Processing ··································································· 2-25
Chapter3. INSTALLATIONANDWIRING
3.1 Installation ··························································································································································3-1
3.1.1 Installation Ambience ···································································· 3-1
3.1.2 Handling Precautions ··································································· 3-1
3.2 Wiring ···································································································································································3-2
3.2.1 Wiring Precautions ····································································· 3-2
3.2.2 Wiring Examples ······································································· 3-2
1) G3F-AD4A ············································································ 3-2
2) G4F-AD2A ············································································ 3-3
3)G3F-AD4B ············································································ 3-4
Chapter4.FUNCTIONBLOCK
4.1 Insertion of theFunctionBlock for the A/D Conversion ModuleontheGMWIN ················4-1
4.2 LocalFunction Block ·····································································································································4-2
4.2.1 Module Initializ ation(G3F-AD4A: AD4INI, G4F-AD2A: AD2INI, G3F-AD4B: AD4BINI) ················ 4-2
4.2.2 Module Reading -Array Type (G3F-AD4A:AD4ARD,G4F-AD2A:AD2ARD, G3F-AD4B:AD4BARD) ····· 4-3
4.2.3 Module Reading -Single Type (G3F-AD4A:AD4RD,G4F-AD2A:AD2RD, G3F-AD4B:AD4BRD) ········ 4-3
4.3 Remote Function Block ································································································································4-4
4.3.1 Module Initialization (G3F-AD4A: AD4RINI, G4F-AD2A: ADR2INI, G3F-AD4B: ADR4BINI) ············ 4-4
4.3.2 Module Reading (G3F-AD4A: ADR4RD, G4F-AD2A: ADR2RD, G3F-AD4B: ADR4BRD) ·············· 4-5
4.4 Errors onFunction Block ····························································································································4-6
Chapter5. GM PROGRAMMING

5.1 Programming for Distinction of A/DConversion Value····································································5-1
5.2 Programming for Display of A/DConversion Value and Error Code on BCD Display ········5-7
5.3 Programming for Loading the A/DConversion Module onRemoteI/O Station ················5-10
Chapter6. BUFFER MEMORYCONFIGURATIONANDFUNCTION
6.1 Buffer Memory Configuration ····················································································································6-1
6.1.1 G3F-AD4A ············································································ 6-1
6.1.2 G 3F-AD4B ············································································ 6-2
6.1.3 G4F-AD2A ············································································· 6-4
6.2 Buffer Memory Functions·······························································································································6-5
6.2.1 Available ChannelSpecificationArea ······················································· 6-5
6.2.2 Input Used Type Specification Area ························································· 6-5
6.2.3 DataOutput Type SpecificationArea ······················································· 6-6
6.2.4 Filter Processing Enable/Disable SpecificationArea ··········································· 6-6
6.2.5 Filter ConstantSetting Area ······························································ 6-7
6.2.6 Average Processing Enable/Disable SpecificationArea ········································ 6-8
6.2.7 Number/Time Average Processing Area ···················································· 6-9
6.2.8 AverageNumber/Time ConstantSetting Area ··············································· 6-10
6.2.9 SET Data Specification Area ···························································· 6-10
6.2.10 Digital Value O utput Area ·······························································6-11
6.2.11 Channel Operation Data Storage Area ·····················································6-11
6.2.12 ErrorCode Display Area ································································6-11
Chapter7.SPECIAL MODULE COMMAND (Buffer Memory READ / WRITE)
7.1 Local Command ···············································································································································7-1
7.1.1 Internal Memory Read -GET,GETP ························································ 7-1
7.1.2 Internal memory Write -PUT, PUTP ························································· 7-2
7.2 Remote Command ··········································································································································7-3
7.2.1 BufferM emory Read –RGET ····························································· 7-3
7.2.2 BufferM emory Write –RPUT ····························································· 7-4
Chapter8.MK PROGRAMMING

8.1 Basic Programming ········································································································································8-1
8.1.1 G3F-AD4A ············································································ 8-1
8.1.2 G4F-AD2A ············································································ 8-2
8.2 Application Programming ···························································································································8-3
8.2.1 Programming for Distinction of A/DConversion Value ·········································· 8-3
8.2.2 Programming for Display of A/DConversion Value and Error Code on BCD Display ·················· 8-5
8.2.3 Programming for Loadin g the A/DConversion Module on Remote I/OStation ······················· 8-7
Chapter9. TROUBLESHOOTING
9.1 Error Code ··························································································································································9-1
9.1.1 ErrorCode Indicated by RUN LEDFlickering ················································ 9-1
9.2 Troubleshooting·················································································································································9-2
9.2.1 RUN LEDFlickering ···································································· 9-2
9.2.2 RUN LEDOff ·········································································· 9-2
9.2.3 Digital ValueUnreadable from the CPU Module ·············································· 9-3
9.2.4 Sudden DigitalValue Change ····························································· 9-3
9.2.5 Analog and Digital ValueMismatch························································· 9-4
9.2.6 A/D Conversion Module Hardware F ault ···················································· 9-4
Chapter10. DIMENSIONS
10.1 G3F-AD4A, G3F-AD4B Dimensions ····································································································10-1
10.2 G4F-AD2A Dimensions ·····························································································································10-2

Chapter 1. INTRODUCTION
1 -1
Chapter1.INTRODUCTION
The G4F-AD2A, G3F-AD4A and G3F-AD4B are analog/digital conversion modules for use with the GLOFA PLC GM 1/2/3/4
series CPU module and the MASTER-K PLC K300S/1000S Series CPU module. The G4F-AD2A is used on GM4 series
moduleand the K300S series module, and the G3F-AD4A and G3F-AD4B is used on the GM1/2/3 series module and the
K1000S series module. (Hereafter the G4F-AD2A, G3F-AD4A and G3F-AD4B are called the A/D conversion module) The
A/D conversion module is to convert an analog input signal (voltage or current) from external sensors into a 14-bit binary
digitalvalue.
1.1.1 G3F-AD4A/ G3F-AD4B
1)16-Channel analog to digital conversion is possible with a single module.
The G3F-AD4A and G3F-AD4B hav e 16-Channel A/D conversion capacity, with each channel selectable for
voltage or current input.
2) High resolution of 1/16000
High-resolution digital values can be obtained. Resolution setting applies to all channels.
4) The number of the G3F-AD4A used on one base is unlimited.
1.1.2 G4F-AD2A
1)4-Channel analog to digital conversion is possible with a single module.
The G3F-AD2A has 4-Channel A/D conversion capacity, with each channel selectable for voltage or current
input.
2)Highresolutionof1/16000
High-resolution digital values can be obtained. Resolution setting applies to all channels.
3) The number of the G4F-AD2A used on one base is unlimited.
1.1 Features

Chapter 1. INTRODUCTION
1 -2
[Fig 1.1] AnalogValue [Fig 1.2] Transducer
1.2.1 A-AnalogValue
Analog value is a sequentially changing value such as voltage, current, temperature, speed, pressure, flux, etc.
Temperature, for example, is sequentially changing according to the time. Because this temperature is not input
on the PLC through transducer, the same analog value of DC voltage (0 to ±10V) or current (4 to 20 mA) in
accordance with the temperature should be inputted on the PLC.
1.2.2 D-DigitalValue
Digitalvalue is non-sequentially changing value written as the number like 0,
1, 2, 3. The signal of on or off iswritten as digital value of 0 or 1.
There are BCD value and binary value in the range of digital value.
Analog value isn't written directly onto the CPU. For analog input to the
CPU operation, analog converted to digital value has to be inputted onto
the CPU and for analog output, the digital value of the CPU should be
converted toanalog value.
1.2 Glossary
Transducer
Analog input
0 to±10 V or
0 to±20 mA
Analog output
0 to±10 V or
0 to±20 mA
[Fig 1.3] Digital Value
[Fig 1.4] PLC Processing
Time

Chapter 1. INTRODUCTION
1 -3
1.2.3 Analog/ Digital Conversion Characteristics
1)Voltage input
[Fig 1.5] A/D Conversion Characteristics(VoltageInput)
Analog/digital conversion module allows external analog input to be converted to digital value and to be operated
in the CPU. On voltage input, input of –10Vleads to digital value of 0 and 10 Vto 16000.
Input of 1.25 mV is equal to digital value of 1. Therefore, input less than 1.25 mV shouldn't be converted but
ignored.
2)Current input
[Fig 1.6] A/D Conversion Characteristics(Currentinput)
On current input, input of -20mAleads to digital value of 8000 and 20mA to 16000. Input of 2.5㎂is equal to
digital value of 1. Therefore, input less than 2.5㎂shouldn't be converted but ignored.
Analoginputcurrent Current input
Input Voltage
Input Current
Input Voltage