Mitsubishi Electronics FX2N-8AD User Manual

USER’S MANUAL

FX2N-8AD Analog input block

Foreword

• This manual contains text, diagrams and explanations which will guide the reader in the correct installation and operation of the FX install or use the unit.

-8AD Analog input block. It should be read and understood before attempting to

• Further information can be found in the FX

/FX1N/FX2N/FX

Series Hardware Manual for connecting main

2NC

unit, and the FX Series Programming Manual(ΙΙ).

• If in doubt at any stage of the installation of FX

-8AD Analog input block always consult a professional

electrical engineer who is qualified and trained to the local and national standards that applies to the installation site.

• If in doubt about the operation or use of FX2N-8AD Analog input block please consult the nearest Mitsubishi Electric distributor.

• This manual is subject to change without notice.

FX2N-8AD Analog input block

-8AD Analog input block

USER’S MANUAL

Manual number : JY992D86001

Manual revision : C

Date : April 2003

FX2N-8AD Analog input block

Guidelines for the Safety of the User and Protection of the FX2N-8AD Analog input block.

This manual provides information for the use of the FX2N-8AD Analog input block. The manual has been written to be used by trained and competent personnel. The definition of such a person or persons is as follows:

a) Any engineer who is responsible for the planning, design and construction of automatic

equipment using the product associated with this manual, should be of a competent nature, trained and qualified to the local and national standards required to fulfill that role. These engineers should be fully aware of all aspects of safety with regards to automated equipment.

b) Any commissioning or service engineer must be of a competent nature, trained and

qualified to the local and national standards required to fulfill that job. These engineers should also be trained in the use and maintenance of the completed product. This includes being completely familiar with all associated documentation for said product. All maintenance should be carried out in accordance with established safety practices.

c) All operators of the completed equipment (see Note) should be trained to use this

product in a safe manner in compliance to established safety practices. The operators should also be familiar with documentation which is associated with the actual operation of the completed equipment.

Note :

The term ‘completed equipment’ refers to a third party constructed device which contains or uses the product associated with this manual.

iii

FX2N-8AD Analog input block

Notes on the Symbols Used in this Manual

At various times throughout this manual certain symbols will be used to highlight points which are intended to ensure the users personal safety and protect the integrity of equipment. Whenever any of the following symbols are encountered its associated note must be read and understood. Each of the symbols used will now be listed with a brief description of its meaning.

Hardware Warnings

1) Indicates that the identified danger

2) Indicates that the identified danger could damage.

3) Indicates a point of further interest or further explanation.

Software Warnings

4) Indicates special care must be taken when using this element of software.

5) Indicates a special point which the user of the associate software element should be aware.

6) Indicates a point of interest or further explanation.

WILL

cause physical and property damage.

POSSIBLY

cause physical and property

FX2N-8AD Analog input block

• Under no circumstances will Mitsubishi Electric be liable responsible for any consequential damage that may arise as a result of the installation or use of this equipment.

• All examples and diagrams shown in this manual are intended only as an aid to understanding the text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for actual use of the product based on these illustrative examples.

• Please contact a Mitsubishi Electric distributor for more information concerning applications in life critical situations or high reliability.

FX2N-8AD Analog input block

FX2N-8AD Analog input block Contents.

Guideline................................................................... .........................................................iii

1. Introduction .........................................................................................1-1

2. External Dimensions...........................................................................2-1

3. Part Name...........................................................................................3-1

4. Installation...........................................................................................4-1

5. Connection to PLC..............................................................................5-1

6. Wiring..................................................................................................6-1

6.1 Caution.............................................................................................................6-1

7. Specifications......................................................................................7-1

8. Buffer Memory (BFM).........................................................................8-1

8.1 Buffer Memories (BFM) lists ............................................................................8-3

8.2 Details of buffer memories.............................................................................8-13

8.2.1 BFM #0, #1: Specifies input mode. ...................................................................8-13

8.2.2 BFM #2 to BFM #9: Number of times of averaging...........................................8-15

8.2.3 BFM #10 to BFM #17: Channel data.................................................................8-17

8.2.4 BMF #19: Disables setting change....................................................................8-17

8.2.5 BFM #20: Initializes functions............................................................................8-17

8.2.6 BFM #21: Writes I/O characteristics..................................................................8-18

8.2.7 BFM #22: Sets convenient functions.................................................................8-19

8.2.8 BFM #24: Specifies high-speed conversion channel ........................................8-20

8.2.9 BFM #26: Upper/lower limit value error status..................................................8-21

8.2.10 BFM #27: A/D data sudden change detection status........................................8-22

8.2.11 BFM #28: Scale over status..............................................................................8-23

8.2.12 BFM #29: Error status.......................................................................................8-25

8.2.13 BFM #30: Model code.......................................................................................8-26

vii

FX2N-8AD Analog input block Contents.

8.2.14 BFM #32: Operating time ..................................................................................8-26

8.2.15 BFM#33 disconnection detection (Only goods: since V1.1 0)............................8-27

8.2.16 BFM #41 to BFM #48: Offset data

BFM #51 to BFM #58: Gain data.......................................................................8-28

8.2.17 BFM #61 to BFM #68: Addition data .................................................................8-30

8.2.18 BFM #71 to BFM #78: Lowe r limit, error set value

BFM #81 to BFM #88: Upper limit, error set value............................................8-31

8.2.19 BFM #91 to BFM #98: Sudden change detection set value..............................8-33

8.2.20 BFM #99: Clears upper/lower limit value error and sudden change detection error

..........................................................................................................................8-35

8.2.21 BFM #101 to BFM #108: Peak value (minimu m value)

BFM #111 to BFM #118: Peak value (maximum value)....................................8-36

8.2.22 BFM #109: Peak value reset flag (minimum value)

BFM #119: Peak value reset flag (maximum value)..........................................8- 37

8.2.23 BFM #198: Data history sampling time .............................................................8-38

8.2.24 BFM #199: Resets or stops data history...........................................................8-40

8.2.25 BFM #200 to BFM #3399: Data history.............................................................8-41

9. Adjustment of I/O Characteristics........................................................9-1

9.1 Standard I/O characteristics............................................................ ......... ........9-2

9.2 Adjustment of I/O characteristics.....................................................................9-7

10. Example program..............................................................................10-1

Appendix A

Associated Manuals List........................................................................... A -1

viii

FX2N-8AD Analog input block

1. Introduction

The FX2N-8AD analog input block (hereafter referred to as "FX2N-8AD") converts 8 points of analog input values (voltage input, current input and temperature input) into digital values, and transfers them to the PLC main unit.

Introduction 1

The FX

-8AD can be connected to FX0N, FX1N, FX2N and FX

Series PLC.

2NC

1) Analog inputs can be selected from the voltage input, the current input and the thermocouple input (temperature input) by the input mode setting by the TO instruction given by the PLC main unit and the connection method. At this time, a different analog input can be selected for each channel.

2) The voltage input can be selected within the range from -10 to +10 V. The current input can be selected within the range from -20 to +20 mA and from +4 to +20 mA. The input characteristics can be adjusted for each channel (except while the analog value direct displa y is used). The thermocouple input can be selected among the K type, J type and T type. (The input characteristics cannot be adjusted when the thermocouple input is used.)

3) The resolution is 0.63 mV (20 V × 1/32,000) or 2.50 mV (20 V × 1/8,000) when the voltage input is used, 2.50 µA (40 mA × 1/16,000) or 5.00 µA (40 mA × 1/8,000) when the current input is used, and 0.1 °C when the thermocouple input is used.

1-1

FX2N-8AD Analog input block Introduction 1

4) Up to two FX2N-8AD units can be connected to FX0N main unit, FX0N extension unit, FX main unit. Up to eight FX 8AD units can be connected to one FX (For connection to the FX Data transfer with the PLC is performed to buffer memories of the FX

-8AD units can be connected to one FX2N Series PLC. Up to four FX2N-

Series PLC.

2NC

Series PLC, an FX

2NC

-CNV-IF is required.)

2NC

-8AD by FROM/TO

instructions.

1-2

COM2

I8+

I4+

V3+

I3+

COM3COM1

COM5

COM8

I5+

24+ 24-

POWER

24V

V2+

I2+

V4+

V7+

V1+

I1+

COM4

V5+

V6+

I7+

I6+

COM6

COM7

V8+

7.5(0.30)

105(4.13)

8(0.31)

75(2.95)

90(3.54)

67(2.64)

(installation dimension)

75(2.95)

8(0.31)

FX2N-8AD

98(3.86)

(installation dimension)

FX2N-8AD Analog input block

2. External Dimensions

Figure 2.1: External Dimensions

External Dimensions 2

Dimensions: mm(inch) Mass(Weight): 0.3 kg(0.66 lbs)

2-1

FX2N-8AD Analog input block External Dimensions 2

MEMO

2-2

FX2N-8AD Analog input block

3. Part Name

Part Name 3

Figure 3.1: Part name

Installation hole (screw M4)

Extension cable

I1+V1+

24-24+

FX2N-8AD

I6+

V6+

V5+

I5+

Hook for DIN rail

COM1 COM3

POWER

24V

COM6

V7+

COM5

V8+

COM2

I7+

Status indicator LED

I3+V3+

V4+I2+V2+

I4+

COM4

I8+

COM8

COM7

Extension connector

M3 (terminal screw)

Table 3.1: Status indicator LED

Indication Description

POWER

24 V

Lit while 5 V power is normally supplied from PLC.

Lit while 24 V power is normally supplied to “24+” and “24-” terminals of FX

-8AD.V

Terminal arrangement

V1+ I1+

24+ 24- V2+ I2+ V4+ I4+

COM6

V6+

V5+ I5+

I6+

COM5

COM1

COM2

V8+ I8+

V7+ I7+

V3+ I3+

COM7

COM8

COM3

COM4

• For wiring, refer to Section 6.

• Never perform wiring to terminals.

•

3-1

FX2N-8AD Analog input block Part Name 3

MEMO

3-2

FX2N-8AD Analog input block

4. Installation

Install the FX2N-8AD to the right side of a main unit, extension unit, extension block or special

Installation 4

block of the FX The FX

-8AD can be installed with a DIN rail (DIN46277 of 35 mm in width) or directly

/FX1N/FX2N/FX

Series PLC.

2NC

installed with screws M4. For the details, refer to the handy manual supplied together with the PLC main unit.)

4-1

FX2N-8AD Analog input block Installation 4

Figure 4.1: Installation with DIN rail

• The FX2N-8AD can be installed on a DIN rail

I1+V1+

COM1 COM3

V3+

24+

V5+

24-

FX2N-8AD

I6+

V6+

I5+

V2+

COM6

COM5

I2+

POWER

24V

V7+

I3+

I4+

COM2

V8+

I7+

COM4

V4+

I8+

COM8

COM7

Hook for DIN rail

Figure 4.2: Direct installation

Installation screw M4

(DIN46277) of 35 mm in width as it is. For removal, pull down on the DIN rail mounting hook, then remove the FX

-8AD.

•The FX2N-8AD can be installed directly by inserting screws (M4) into installation holes. For the pitch and the position of installation holes, re fer to the figure on the le ft.

67(2.64)

Dimensions: mm(inch)

98(3.86)

4-2

FX2N-8AD Analog input block

5. Connection to PLC

Connect the FX2N-8AD to the right side of a main unit, extension unit or extension block of

Connection to PLC 5

FX For c onnection t o a basic unit or extension block o f the FX

, FX1N, FX2N, FX

Series PLC with an extension cable.

2NC

Series PLC, use an FX

2NC

-CNVIF. Please check power supply availability to deter mine the number of FX be connected to the FX

, FX1N, FX2N or FX

2NC

PLCs.

-8AD blocks that can

A unit No. 0 to 7 is automatically assigned to each special unit or special block connected to a PLC basic unit from the one nearest to the basic unit. The data is read from a nd written to the FX

-8AD by FROM/TO instr uctions given by the

basic unit.

5-1

FX2N-8AD Analog input block Connection to PLC 5

MEMO

5-2

FX2N-8AD Analog input block

6. Wiring

6.1 Caution

1) Do not lay signal c ab le near to high voltage power cab le or house them in the same trunking

duct. Effects of noise or surge induction may occur. Keep signal cables a safe distance of more than 100 mm (3.94") from these power cabl es.

Wiring 6

2) The ter minal screws of the FX

-8AD are M3 (0.12"), therefore cr imp style terminals (see

drawing) suitable for use with these screws should be fitted to the cable for wiring.

Figure 6.1: Crimp Terminals

For M3 (0.12")

6.2 mm (0.24" ) or less

For M3 (0.12")

6.2 mm (0.24") or less

3) The terminal tightening torque is 0.5 to 0.8 Nžm. Tighten securely to avoid malfunction.

4) Cut off all phases of power source before installation or perfor ming wiring work in order to avoid electric shock or damage of product.

5) Replace the provided terminal cover before supplying power and operating the unit after installation or wiring work in order to avoid electric shock.

6-1

FX2N-8AD Analog input block Wiring 6

Figure 6.2: Wiring

FX2N-8AD

Thermocouple (K, J or T type)

*1 Shielded cabl e

Current input

Voltage input

DC24V

*4 Connected to terminal of PLC main unit

Class D grounding

V3+

I3+

COM3

V2+

I2+

COM2

V1+

I1+

COM1

24+

24-

250

Ω

5.8k

200k

5.8k

200k

Ω

5.8k

Ω

DC/DC

converter

CH3

CH2

CH1

Note:Use solderless terminals of the following size (M3).

+15V

-15V

Tighten them securely at the tightening torque of 0.5 to 0.8 N•m.

Figure 6.3: Crimp Terminals

For M3 (0.12")

6.2 mm (0.24" ) or less

For M3 (0.12")

6.2 mm (0.24") or less

6-2

FX2N-8AD Analog input block Wiring 6

*1 Use a two-core, twisted, shielded cable for the analog input line, and separate it from

other power lines or a lines easily induced.

*2 If there is voltage ripple in the input or there is noise in the external wiring, connect a

capacitor of approximately 0.1 to 0.47 µF, 25 V.

*3 F or the current input, mak e sure to sho rt-circuit the “V O+” terminal and the “IO+” terminal

(O: input channel No.).

*4 Make sure to connect the terminal to the terminal of the PLC main unit to

which Class D grounding (100 Ω or less) is performed. *5 The 24 V DC service power supply of the PLC is also available. *6 Use an isolated type thermocouple.

- When using the thermocouple input, use compensating conductors suitable to the

thermocouple.

- Never perform wiring to terminals.

•

- For the terminal arrangement, refer to Section 3.

6-3

FX2N-8AD Analog input block Wiring 6

MEMO

6-4

FX2N-8AD Analog input block

7. Specifications

Table 7.1: General specifications

Item Specifications

Specifications 7

Ambient temperature

0 to +55 °C during operation, -20 to +70 °C during storage

range Ambient humidity 35 to 85 % RH during operation (Dew condensation shall not be allowed.)

In conformance to JIS C0040 F requency 10 to 57 Hz, half amplitude 0.075 mm, 57 to 150 Hz, acceleration 9.8

Vibration resistance

m/s

, 10 times in each of X, Y and Z directions (80 times in total)

(For product installed with DIN rail: F requency 10 to 57 Hz, half amplitude 0.035

mm, 57 to 150 Hz, acceleration 4.9 m/s

)

In conformance to JIS C0041

Impact resistance

147 m/s

for 11 ms, 3 times in each of X, Y and Z directions with half-sine pulses

By noise simulator of noise voltage 1,000 Vp-p, noise width 1 µs and frequency

Noise resistance

30 to 100 Hz 500 V AC for 1 min

Withstand voltage

(between analog input ter m inal and each terminal of PLC main unit) In conformance to JEM-1021

Insulation resistance

5 MΩ or more by 500 V DC Megger (between all terminals as a whole and case)

Operating atmosphere

Corrosive gas and much dusts shall not be detected.

7-1

FX2N-8AD Analog input block Specifications 7

Table 7.2: Power supply specifications

Item Specifications

Interface driving

24 V DC±10%, 80 mA (maximum), supplied via terminal from outside

power supply CPU driving power

5 V DC, 50 mA, supplied via extension cable from PLC main unit

supply

Table 7.3: Performance specifications

Item Specifications

• When only voltage input and current input are used 500 µs x Number of used channels

• When thermocouple input is used for 1 or more channels

Conv ersion speed

Insulation method

Channel for voltage/current input: 1 ms x Number of used channels Channel for thermocouple input: 40 ms x Number of use d channels

(Number of used channels indicates number of all channels used for voltage input, current input or thermocouple input.)

Photocoupler insulates analog inpu t area from PLC. DC/DC converter insulates power supply from analog I/O. Channels are not insulated each other.

Number of occupied

8 points (including input points and output points)

I/O points

, FX1N, FX2N, FX

Applicable PLC

(For connection to FX

Built-in memory EEPROM

2NC

Series PLC

2NC

Series PLC, FX

2NC

-CNV-IF is required.)

7-2

FX2N-8AD Analog input block Specifications 7

Table 7.4: Voltage/current input specifications

Item Voltage input Current input

-10 to +10 V DC (input resistance: 200 kΩ) Adjustment is ena b led in following condition: Offset value: -10 to +9 V

Analog input range

Digital output Signed 16-bit binary Signed 16-bit binary

Resolution

Gain val ue: 10 V or less "Gain - Offset": > 1 V (Resolution is constant.) However, change is disabled while an alog value direct display is used. Maximum absolute input: ±15 V

0.63 mV (20 V × 1/32000)

•

2.5mV (20 V × 1/8000)

•

-20 to +20 mA DC, +4 to +20 mA DC (input resistance: 250 Ω) Adjustment is enabled in following condit ion: Offset v alue: -20 to +17 mA Gain value: 30 mA or less "Gain - Offset": > 3 mA (Resolution is constant.) However, change is disabled while analog value direct displa y is used. Maximum absolute input: ±30 mA

2.50 µA (40 mA × 1/16,000)

•

during input of -20 to +20 mA

5.00 µA (40 mA × 1/8,000)

•

during input of -20 to +20 mA

2.00 µA (16 mA × 1/8,000)

•

during input of +4 to +20 mA

4.00 µA (16 mA × 1/4,000)

•

during input of +4 to +20 mA

Total accuracy

Ambient temperature: 25 °C ± 5 °C ±0.3% (±60 mV) against full scale 20 V Ambient temperature: 0 to +55 °C ±0.5% (±100 mV) against full sc ale 20 V

Ambient temperature: 25 °C ± 5 °C

±0.3% (±120 +4 to +20mA input is same (±120 Ambient temperature: 0 to +55 °C ±0.5% (±200 +4 to +20mA input is same (±200

A) against full scale 40 mA

7-3

FX2N-8AD Analog input block Specifications 7

Table 7.5: Thermocouple input specifications

Item K type thermocouple J type thermocouple T type thermocouple

Analog input range Digital output Signed 16-bit binary Signed 16-bit binary Signed 16-bit binary

Resolution 0.1 °C or 0.1 °F0.1

Less than V1.10

Total accuracy

V1.10 or more

-100 to 1200 °C

-148 to 2192 °F

Ambient temperature: 0 to 55 °C ± 1 % Against full scale (-100 °C to 1200 °C / -148 °F to 2192 °F) However , 0 °C to 1000 °C / 32 °F to 1832 °F of K type and 25 °C to 600 °C / 77 °F to 600 °F of J type are 0.5 %.

Ambient temperature: 0 to 55 °C ± 0.5% against a full scale. ± 6.5°C / ± 11.7 °F when it uses K type ± 3.5°C / ± 6.3 °F when it uses J type

-100 to 600 °C

-148 to 1112 °F

C or 0.1 °F0.1

-100 to 350 °C

-148 to 662 °F

Ambient temperature: 0 to 55 °C ± 0.7% (± 3.15°C / ± 5.67 °F) against a full scale.

C or 0.1 °F

• For the I/O characteristics of the voltage/current/thermocouple input, refer to Section 9.

•FX

-8AD is from production goods (SERIAL 0Z****) to V1.10 in December, 2000.

7-4

FX2N-8AD Analog input block

8. Buffer Memory (BFM)

Caution

1) Do not access the buffer memory of “Reserved” (BFM #18, #23, #25, #31, #33 to #40, #49 to 50, #59, #60, #69, #70, #79, #80, #89, #90, #99, #100, #120 to #197) by the

Buffer Memory (BFM) 8

FROM/TO instruction. There is a possibility to cause abnormal operation of the FX 8AD if accessing these buffer memories.

8-1

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Data transfer between the FX2N-8AD and the P LC main unit is pe rformed through buffer memories (hereafter referred to as "BFM") of the FX

-8AD. Each BFM consists of 1 word, 16 bits. The BFM No. 0 to 3399 and a function are assigned to each BFM. Use FROM/TO instructions to read and write the data between the BFM and the PLC. When the pow er is turned on from off, the initial value is written to each BFM. When you would like to use different contents of the BFM, create a program for the PLC so that the desired contents are written to the BFM every time the power of the PLC is turned on. (The contents stored in BFM #0, #1, #19, #22, #24, #41 to #48 and #51 to #58 are sto red in the built-in EEPROM, and held against power failure.)

8-2

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.1 Buffer Memories (BFM) lists

Table 8.1: BFM Lists

BFM

No.

#0 Specifies input mode of CH1 to CH4. #1 Specifies input mode of CH5 to CH8. #2 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #3 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #4 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #5 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #6 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #7 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes #8 Number of times of a veraging of CH1 Setting range: 1 to 4, 095 ti mes

#9 Number of times of a veraging of CH8 Setting range: 1 to 4, 095 ti mes #10 CH1 data (immediate data or average data) #11 CH2 data (immediate data or average data)

Description

Hold against

power failure

         

Initial value

H0000 at shipment H0000 at shipment

1 1 1 1 1 1 1 1

#12 CH3 data (immediate data or average data) #13 CH4 data (immediate data or average data) #14 CH5 data (immediate data or average data) #15 CH6 data (immediate data or average data) #16 CH7 data (immediate data or average data) #17 CH8 data (immediate data or average data)

     

8-3

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#18 Reserved

Disables setting change of I/O characteristics

#19

#20

#21

#22 #23 Reserved

#24 Specif ies high-speed con version channel.Setting range: K0 to K8 #25 Reserved

(BFM #0, BFM #1, BFM #21) and convenient functions (BFM #22). Disables change.: K2, Enab les change.: K1

Initializes fun ct io n s. (Initializes functions at K1, then returns automatically to K0 after initialization is completed.)

Writes I/O characteristics. (Returns automatically to K0 after write of offset/gain value is finished.)

Sets convenient functions (data addition, upper/lower limit value detection, sudden change detection and peak value hold).

Description

Hold against

power failure





Initial value

K1 at shipment

#26 Upper/lower limit value error status (vali d while BFM #22 b1 is ON) #27 #28 Scale over status and disconnection detection

#29 Erro r status #30 Model code (K2050) #31 Reserved

A/D data sudden change detection status (valid while BFM #22 b2 is ON)

  

  

K0 K0 K0

K2050

8-4

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

Operating time 0 to 64,800 (s)

#32

#33

#41 CH1 offset dat a (mV or µA) #42 CH2 offset dat a (mV or µA) #43 CH3 offset dat a (mV or µA) #44 CH4 offset dat a (mV or µA) #45 CH5 offset dat a (mV or µA)

After that, 64,80 0 is kept. Measurement starts when power is turned on, and measured value is reset when power is turned off.

Thermo-couple disconnection detection(V1.10 or higher.) It executes the disconnection detection with K 1. It automatically returns to K0 after it completes it.

•

Reserved

•

Description

Hold against

power failure





Initial value

K0 at shipment K0 at shipment K0 at shipment K0 at shipment

K0 at shipment #46 CH6 offset dat a (mV or µA) #47 CH7 offset dat a (mV or µA) #48 CH8 offset dat a (mV or µA)

•

Reserved

• #51 CH1 gain data (mV or µA) #52 CH2 gain data (mV or µA)



K0 at shipment K0 at shipment K0 at shipment

K5000 at shipment K5000 at shipment

8-5

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#53 CH3 gain data (mV or µA) #54 CH4 gain data (mV or µA) #55 CH5 gain data (mV or µA) #56 CH6 gain data (mV or µA) #57 CH7 gain data (mV or µA) #58 CH8 gain data (mV or µA) #59

#60 #61

#62

#63

Reserved CH1 addition data Setting range: -16,000 to +16,000

(valid while BFM #22 b0 is ON) CH2 addition data Setting range: -16,000 to +16,000

(valid while BFM #22 b0 is ON) CH3 addition data Setting range: -16,000 to +16,000

(valid while BFM #22 b0 is ON)

Description

Hold against

power failure





Initial value

K5000 at shipment K5000 at shipment K5000 at shipment K5000 at shipment K5000 at shipment K5000 at shipment

#64

#65

#66

#67

CH4 addition data Setting range: -16,000 to +16,000 (valid while BFM #22 b0 is ON)

CH5 addition data Setting range: -16,000 to +16,000 (valid while BFM #22 b0 is ON)

CH6 addition data Setting range: -16,000 to +16,000 (valid while BFM #22 b0 is ON)

CH7 addition data Setting range: -16,000 to +16,000 (valid while BFM #22 b0 is ON)



8-6

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#68

#71 CH1 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#72 CH2 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#73 CH3 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#74 CH4 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#75 CH5 lower limit value error set val ue (valid while BFM #22 b1 is ON)

CH8 addition data Setting range: -16,000 to +16,000 (valid while BFM #22 b0 is ON)

•

Reserved

•

Description

Hold against

power failure







Initial value

Minimum digit al value inside input range

#76 CH6 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#77 CH7 lower limit value error set val ue (valid while BFM #22 b1 is ON)

#78 CH8 lower limit value error set val ue (valid while BFM #22 b1 is ON)

•

Reserved

•





Minimum digit al value inside input range

8-7

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#81 CH1 upper limit value error set value (valid while BFM #22 b1 is ON)

#82 CH2 upper limit value error set value (valid while BFM #22 b1 is ON)

#83 CH3 upper limit value error set value (valid while BFM #22 b1 is ON)

#84 CH4 upper limit value error set value (valid while BFM #22 b1 is ON)

#85 CH5 upper limit value error set value (valid while BFM #22 b1 is ON)

#86 CH6 upper limit value error set value (valid while BFM #22 b1 is ON)

#87 CH7 upper limit value error set value (valid while BFM #22 b1 is ON)

Description

Hold against

power failure



Initial value

Maximum digital value inside input range

#88 CH8 upper limit value error set value (valid while BFM #22 b1 is ON)

•

Reserved

• #91

#92

CH1 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH2 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)







Maximum digital value inside input range

5% of full scale

8-8

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#93

#94

#95

#96

#97

#98

#99

Description

CH3 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH4 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH5 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH6 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH7 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

CH8 sudden change detection set value Setting range: 1 to 50% of full scale (valid while BFM #22 b2 is ON)

Clearness of upper and lower limit value error and sudden change detection error

Hold against

power failure



Initial value

5% of full scale

•

Reserved

•

#101 CH1 peak value (minimum value) (valid while BFM #22 b3 is ON) #102 CH2 peak value (minimum value) (valid while BFM #22 b3 is ON) #103 CH3 peak value (minimum value) (valid while BFM #22 b3 is ON) #104 CH4 peak value (minimum value) (valid while BFM #22 b3 is ON) #105 CH5 peak value (minimum value) (valid while BFM #22 b3 is ON) #106 CH6 peak value (minimum value) (valid while BFM #22 b3 is ON)



  

Refer to 8.2.21.

  

8-9

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

#107 CH7 peak value (minimum value) (valid while BFM #22 b3 is ON) #108 CH8 peak value (minimum value) (valid while BFM #22 b3 is ON) #109 Peak value (minimum value) r eset flag #110 Unusable #111 CH1 peak value (maximum value) (valid while BFM #22 b3 is ON) #112 CH2 peak value (maximum value) (valid while BFM #22 b3 is ON) #113 CH3 peak value (maximum value) (valid while BFM #22 b3 is ON) #114 CH4 peak value (maximum value) (valid while BFM #22 b3 is ON) #115 CH5 peak value (maximum value) (valid while BFM #22 b3 is ON) #116 CH6 peak value (maximum value) (valid while BFM #22 b3 is ON) #117 CH7 peak value (maximum value) (valid while BFM #22 b3 is ON) #118 CH8 peak value (maximum value) (valid while BFM #22 b3 is ON)

Description

Hold against

power failure

           

Initial value

Refer to 8.2.21.

#119 Peak value (maximum value) reset flag

•

Reserved

•

Data history sampling time

#198

(vali d only in channels for which number of times of averaging (BFM #2 to #9) is set to "1") Setting range: 0 to 30,000 ms







8-10

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

Resets or stops data history.

#199

#200 CH1 data history (1st value) #201 CH1 data history (2nd value) #202 CH1 data history (3rd value)

#599 CH1 data history (400th value) #600 CH2 data history (1st value) #601 CH2 data history (2nd value) #602 CH2 data history (3rd value)

(vali d only in channels for which number of times of averaging (BFM #2 to #9) is set to "1")

•

Description

Data history sampling is v alid only in channels for which number of times of a v erag ing (BFM #2 to #9) is set to "1".

Hold against

power failure



  

 

  



Initial value

K0 K0 K0

K0 K0 K0 K0

#999 CH2 data history (400th value) #1000 CH3 data history (1st value) #1001 CH3 data history (2nd value) #1002 CH3 data history (3rd value)

   

K0 K0 K0 K0

8-11

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.1: BFM Lists

BFM

No.

•

• #3397 CH8 data history (398th value) #3398 CH8 data history (399th value) #3399 CH8 data history (400th value)

Description

Data history sampling is v alid only in channels for which number of times of a v erag ing (BFM #2 to #9) is set to "1".

Hold against

power failure



  

Initial value

K0 K0 K0

8-12

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2 Details of buffer memories

8.2.1 BFM #0, #1: Specifies input mode.

Specify the input mode of CH1 to CH4 by writing a numeric value to BFM #0. Specify the input mode of CH5 to CH8 by writing a numeric value to BFM #1. In the input mode specification, each BFM is expressed in a 4-digit hexadecimal code, and each channel No. is assigned to each digit. Specify a numeric value 0 to F in each digit for each channel.

BFM#0

H¡¡¡¡

CH1 CH2 CH3 CH4

BFM#1

H¡¡¡¡

CH5 CH6 CH7 CH8

¡=0: Voltage input mode (-10 to +10 V), resolution 0.63 mV (20 V x 1/32,000) ¡=1: Voltage input mode (-10 to +10 V), resolution 2.50 mV (20 V x 1/8,000) ¡=2: Voltage input mode, analog value direct display (-10,000 to +10,000), resolution 1 mV ¡=3: Current input mode (4 to 20 mA), resolution 2.00 µA (16 mA x 1/8,000) ¡=4: Current input mode (4 to 20 mA), resolution 4.00 µA (16 mA x 1/4,000) ¡=5: Current input mode, analog value direct display (4,000 to 20,000), resolution 2.00 µA ¡=6: Current input mode (-20 to +20 mA), resolution 2.50 µA (40 mA x 1/16,000) ¡=7: Current input mode (-20 to +20 mA), resolution 5.00 µA (40 mA x 1/8,000)

8-13

FX2N-8AD Analog input block Buffer Memory (BFM) 8

¡=8: Current input mode, analog value direct display (-20,000 to +20,000), resolution 2.50 µA ¡=9: Thermocouple input mode, K type, Celsius display (-100 to +1,200°C), resolution 0 .1°C ¡=A: Thermocouple input mode, J type, Celsius display (-100 to +600°C), resolution 0.1°C ¡=B: Thermocouple input mode, T type, Celsius display (-100 to +350°C), resolution 0.1°C ¡=C: Thermocouple input mode, K t ype, Farenheit displa y (-148 to +2,192°F), resolution 0.1°F ¡=D: Thermocouple input mode, J type , Farenheit displa y (-148 to +1 ,112°F), resolution 0.1°F ¡=E: Thermocouple input mode, T type, Farenheit display (-148 to +662°F), resolution 0.1°F ¡=F: Input channel release (unusable)

• The input characteristics are automatically changed in accordance with the setting of BFM #0 and BFM #1. (When the voltage input mode or the current input mode is selected, the input characteristics can be changed. However, when the analog value direct display is selected, the input characteristics cannot be changed.)

• The setting "release of all input channels (unusable)" is not available.

• It takes approximately 5 seconds to change the input mode (BFM #0, BFM #1) (to change each set value). Assue the time interval of 5 seconds or more after change of the input mode until execution of write of each setting (TO instruction).

8-14

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.2 BFM #2 to BFM #9: Number of times of averaging

When using BFM #10 to #17 as the average data, write the number of times of averaging to BFM #2 to BFM #9. The setting range of the number of times of averaging is 1 to 4,095. However, when you set the number of times of averaging to "1", the immediate data (current value) is stored in BFM #10 to BFM #17. When you set the number of times of averaging to "0" or a smaller value, "0" is written. When you set the number of times of averaging to "4,096" or a larger value, "4,096" is written. In either case, a number of times of averaging setting error (BFM #29 b10) occurs. The initial value is "1".

8-15

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Update of average data

• When the number of times of averaging (BFM #2 to BFM #9) is set to "400" or less, the average (BFM #10 to BFM #17) is updated every time the A/D conversion processing is performed. At this time, the average is always calculated by sampling of the A/D conversion values as many as the set number of times of averaging from the latest one. The update time is as follows: Average data update time = (A/D conversion time) x Number of channels

• When the number of times of averaging (BFM #2 to BFM #9) is set to "401" or more, the average (BFM #10 to BFM #17) is updated every time A/D conversion is performed by as many as the set number of times of averaging. The update time is as follows: A verage data update time = (A/D conversion time) x Number of channels x Number of times of averaging

In either case above, until the number of times of A/D conversion reaches the set number of times of averaging for the first time, the average at each time point is stored in BFM #10 to BFM #17.

8-16

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.3 BFM #10 to BFM #17: Channel data

The A/D conversion data of each channel is written to BFM #10 to BFM #17. You can select the immediate (current value) data or the average data b y se tting th e num ber of times of averaging (BFM #2 to BFM #9) described above.

8.2.4 BMF #19: Disables setting change

BFM #19 enables or disables the setting change of the I/O characteristics (BFM #0, BFM #1, BFM #21), the convenient functions (BFM #22) and the high-speed conversion channel (BFM #24).

K1: Enables change (selected at shipment from factory). K2: Disables change.

8.2.5 BFM #20: Initializes functions

BFM #20 initializes all d ata stored in BFM #0 to BFM #33 99, and sets t he FX

-8AD to the

status at shipment from the factory. By initialization, the input characteristics are reset to the values set at shipment from the factory (voltage input, offset value K0, gain value K5000).

K0: Normal K1: Executes initialization.

(Writes K1, then returns automatically to K0 when initialization is completed.)

8-17

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.6 BFM #21: Writes I/O characteristics

Each channel No. is assigned to the lower eight bits of BFM #21. When a bit is set to ON, the offset data (BFM #41 to BFM #48) and the gain data (BFM #51 to BFM #58) of the assigned channel No. are written to the built-in memory (EEPROM), and become valid. You can give the write command to two or more channels at a time. (When you inp ut "HFF", a ll channels are written.) When write is completed, BFM #21 returns automatically to K0.

BFM21

b15, b14, b13, b12, b11, b10, b9, b8, b7

CH8

Invalid

, b6, b5, b4, b3, b2, b1, b0

CH7

CH6

CH5 CH4

CH3

CH2 CH1

8-18

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.7 BFM #22: Sets convenient functions

The functions described below are assigned to b0 to b3 of BFM #22. When a bit is set to ON, the assigned function becomes valid. When a bit is set to OFF, the assigned function becomes invalid.

b0: Data addition function

The data (BFM #10 to BFM #17), the peak v alu e (BFM #101 to BFM #1 08, BFM #111 to BFM #118) and the data histor y (BFM #200 to BFM #3399) of each channel be come the measured value added by the addition data (BFM #61 to BFM #68). When using this function, write the value added by the addition data (BFM #61 to BFM #68) to the lower limit value error set value (BFM #71 to BFM #78) an d the upper limi t value error set value (BFM #81 to BFM #88). The addition data (BFM #61 to BFM #68) is no t added to the s cale o v er da ta (BFM #28).

b1: Upper/lower limit value detection function

When the A/D conversion data of each channel is outside the range from th e lower limit value error set value (BFM #71 to BFM #78 ) to t he up per lim it value error s et value (BFM #81 to BFM #88), the resul t is written to the upper/lo wer limi t valu e error status (BFM #26) .

b2: Sudden change detection function

When the data (BF M #10 to BFM #17) o f each channel is upd ated, if the difference between the previous value and the new value is larger than the sudden change detection set value (BFM #91 to BFM #98), the result is written to the sudden change detection status (BFM #27).

b3: Peak value hold function

The minimum value of the data (BFM #10 to BFM #17) of each channel is written to BFM #101 to BFM #108, and the maximum value is written to BFM #111 to BFM #118.

8-19

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.8 BFM #24: Specifies high-speed conversion channel

When using only the voltage input mode and the current input mode, you can improve the A/D conversion timing (to 1/4 of the normal timing) for only one channel among CH1 to CH8. However, the conversion timing becomes slower in other channels (to twice of the normal timing). To select a channel, write "K1" (for CH1) to "K8" (for CH8) to BFM #24. (When you write "K0", the high-speed conversion function is not available.)

Example: When BFM #24 is set to "K1"

Conversion channel

1 2 1 3 1 4 1 5 1 6 1 7 1 8

Conversion timing of CH1: 500 µs x 2 = 1 ms Conversion timing of other channels: 500 µs x 2 x 8 (CH) = 8 ms (Usual conversion timing of each channel: 500 µs x 8 (CH) = 4 ms)

• When the thermocouple input mode is used in one or more channels, the high-speed conversion function is not available.

8-20

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.9 BFM #26: Upper/lower limit value error status

When you use the upper/lo w e r limit value detection function (BFM #22 b1), the detection result is written to BFM #26. The lower lim it value error or the upper limit value error of each channel is as sig ned to e ach bit of BFM #26. When the data (BFM #10 to BFM #17) of each channel is outside the range from the lower limit valu e error set value (BFM #71 to BFM #78) to the upper limit value err or set value (BFM #81 to BFM #88), the corresponding bit turns ON. Once a bit turns ON, it remains ON until it is reset by BFM #99 or the power is turned off. Even while an upper/lower limit value error is detected, the data (BFM #10 to BFM #17) of each channel is continuously updated.

Table 8.2: Bit assignment in BFM #26

Bit

No.

b0 b1 Upper limit value error b9 Upper limit value error b2 b3 Upper limit value error b11 Upper limit value error b4 b5 Upper limit value error b13 Upper limit value error b6 b7 Upper limit value error b15 Upper limit value error

Channel

No.

CH1

CH2

CH3

CH4

Description

Bit

No.

Lower limit value error b8

Lower limit value error b10

Lower limit value error b12

Lower limit value error b14

Channel

Description

No.

Lower limit value error

CH5

Lower limit value error

CH6

Lower limit value error

CH7

Lower limit value error

CH8

8-21

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.10 BFM #27: A/D data sudden change detection status

When you use the sudden change detection function (BFM #22 b2), the detection result is written to BFM #27. The sudden change detection + direction or the sudden change detection - direction of each channel is assigned to each bit o f BFM #27. When the data (BF M #10 to BFM #17) of each channel is updated, if the difference between the previous value and the new v alue is larger than the sudden c ha ng e de tec t io n se t value (BFM #91 to BFM #9 8) , t he c o rre sp on di n g bi t t urns ON. At this time, when the new value is larger than the previous value, a bit for the + direction turns ON. when the new value is smaller than th e pr evious value , a bi t for the - direction turns ON. Once a bit turns ON, it remains ON u nt il i t is r eset by BFM #99 or the po wer is turned off . Even while a sudden change error is detected, the data (BFM #10 to BFM #17) of each channel is continuously updated.

Table 8.3: Bit assignment in BFM #27

Bit

No.

b0 b1 b2 b3 b4 b5 b6 b7

Channel

No.

CH1

CH2

CH3

CH4

Description

Sudden change error in - direction Sudden change error in + direction Sudden change error in - direction Sudden change error in + direction Sudden change error in - direction Sudden change error in + direction Sudden change error in - direction Sudden change error in + direction

Bit

No.

b9 b10 b11 b12 b13 b14 b15

Channel

Description

No.

Sudden change error in - direction

CH5

Sudden change error in + direction Sudden change error in - direction

CH6

Sudden change error in + direction Sudden change error in - direction

CH7

Sudden change error in + direction Sudden change error in - direction

CH8

Sudden change error in + direction

8-22

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.11 BFM #28: Scale over status

When the analog input value of each channel is outside the range in which A/D conversion is available, the result is written to BFM #28.

Table 8.4: Rang e in which A/D conversion is available

Voltage input

mode

- 10.240V to

10.235V

Current input

mode

- 20.480mA to

20.470mA

K type J type T type

-100 °C to 1200 °C

-148 °F to 2192 °F

Thermocouple input mode

-100 °C to 600 °C

-148 °F to 1112 °F

-100 °C to 350 °C

-148 °F to 662 °F

Once a bit turns ON, it remains ON until it is over written with the OFF status by the TO instruction given by the PLC main unit or the power is turned off. Even while a scale over error is detected, the data (BFM #10 to BFM #17) of each channel is continuously updated.

8-23

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.5: Bit assignment in BFM #28

Bit

No.

b0 b1 Scale over: More than upper limit and disconnection detection b2 b3 Scale over: More than upper limit and disconnection detection b4 b5 Scale over: More than upper limit and disconnection detection b6 b7 Scale over: More than upper limit and disconnection detection b8

b9 Scale over: More than upper limit and disconnection detection b10 b11 Scale over: More than upper limit and disconnection detection

Channel

Description

No.

Scale over: Less than lower limit

CH1

Scale over: Less than lower limit

CH2

Scale over: Less than lower limit

CH3

Scale over: Less than lower limit

CH4

Scale over: Less than lower limit

CH5

Scale over: Less than lower limit

CH6

b12

CH7

b13 Scale over: More than upper limit and disconnection detection b14

CH8

b15 Scale over: More than upper limit and disconnection detection

Scale over: Less than lower limit

8-24

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.12 BFM #29: Error status

The error information is assigned to each bit of BFM #29.

Table 8.6: Bit assignment in BFM #29

Bit

No.

b0 Error detected b0 is ON while either one among b1 to b4 is ON.

b1 Offset/gain set value error

b2 Power error

b3 Hardware error

b4 A/D conv ersion value error

Thermocouple being

warmed up

b6 BFM read/write disabled

Assignment Description

Offset/gain value is outside setting range. Set a correct value.

24 V power is not normally supplied. Check wiring and supply voltage.

FX Contact Mitsubishi Electric System Service nearest to you.

A/D conversion value is abnormal. Using scale over data (BFM #28), check channel in which error has occurred.

This bit is ON for 20 minutes after power is turned on. This bit is ON during input characteristics change processing.

While this bit is ON, correct A/D data cannot be read from or written to BFM.

-8AD may have failed.

b8 Set value error detected This bit is ON while either bit among b9 to b15 is ON.



8-25

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.6: Bit assignment in BFM #29

Bit

No.

b9 Input mode setting error

Number of times of

b10

averaging setting error

b11

Sudden change detection

b12

set value error Upper/lower limit value

b13

error set value error High-speed conversion

b14

channel setting error

b15 Addition data setting error

Assignment Description



Input mode (BFM #0, BFM #1) is incorrectly set. Set it within range from 0 to F.

Number of times of averaging is incorrectly set. Set it within range from 1 to 4,095.

Sudden change detection set value is incorrect. Set a correct value.

Upper/lower limit value error set value is incorrect. Set a correct value.

High-speed conversion channel is incorrectly set. Set it within range from 0 to 8.

Addition data is incorrectly set. Set it within range from -16,000 to +16,000.

8.2.13 BFM #30: Model code

BFM #30 stores the fixed value "K2050".

8.2.14 BFM #32: Operating time

BFM #32 stores the continuous operating time of the FX Measurement star ts when the power is tur ned on, and t he measured value is reset when the power is turned off. The measurement range is from 0 to 64,800 (s). After that, 64,800 is kept.

-8AD.

8-26

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.15 BFM#33 disconnection detection (Only goods: since V1.10).

It does the disconnection detection of all channels used by writing K1 in BFM#33 in the thermo-couple input mode (Set it by BFM#1 and # 0). It executes the disconnection detection only once, and the result is written in BFM#28. (It turns on the odd number bit of the channel where the disconnection occurs. Refer to Table

8.5.) When it completes the execution of the disconnection detection, K0 is automatically written in BFM#33. Write K1 in BFM#33 regularly when you continuously execute the disconnection detection. At this time, you should use the internal clock so that the interruption of the analog to digital conversion may increase when it does every operation execution. It turns off POWER LED during the disconnection detection execution. (Blink when continuously executing it)

Program example

1s clock

M8013

RUN monitor

M8000

FROM K0 K28

K0 K33 K1 K1

K4M100

In the program of the following, when it detects the disconnection with ea ch channel, it turns on the undermentioned supplementary Relay.

CH1:M101 CH5:M109 CH2:M103 CH6:M111 CH3:M105 CH7:M113 CH4:M107 CH8:M115

8-27

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.16 BFM #41 to BFM #48: Offset data BFM #51 to BFM #58: Gain data

Offset data : Analog input value when the digital value is "0" Gain data : Analog input value when the digital value is as shown below

(The digital value varies depending on the setting of the input mode.)

Standard digital value of offset and gain in each input mode

(A number in the input mode column indicates a value set in BFM #0, BFM #1.)

Table 8.7: Standard digital value

Input mode (BFM #0, BFM #1)

Standard offset value

Standard gain value

012345678

8000 2000

Unchange-

able

Unchange-

8000 4000

able

Unchange-

able

Unchange-

able

Unchange-

able

Unchange-

8000 4000

able

• You can set the offset data and the gain data for each channel.

• Write the set value in the unit of "mV" for voltage input or "µA" for current input.

• You cannot change the input char acte ristics in th e anal og value direct display mo de and the

thermocouple input mode. (Even if you write a numeric value, it is ignored.)

8-28

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Initial offset/gain value

(Unit: mV for voltage input, µA for current input)

Table 8.8: Initial offset/gain value

Input mode (BFM #0, BFM #1)

Initial offset value Initial gain value

012345678 0 0 0 4000 4000 4000 0 0 0

5000 5000 5000 20000 20000 20000 20000 20000 20000

Setting range

Table 8.9: Setting range

Voltage input Current input

Offset data -1000 to +9000 (mV) -2000 to +1700 (µA) Gain data

Gain value - Offset value = 1,000 to 10,000 (mV)

Gain value - Offset value = 3,000 to 30,000 (µA)

However, the actual effective input range is "-10 to +10 V" or "-20 to +20 mA".

8-29

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.17 BFM #61 to BFM #68: Addition data

When you use the data addition function (BFM #22 b0), the da ta (BFM #10 to BFM #17), the peak val ue (BFM #101 to BFM #108, BFM #111 to BFM #118) and the data history (BFM #200 to BFM #999) of each channel become the measured value added by the addition data (BFM #61 to BFM #68). When using the data addition function, write the value added by the addition data (BFM #61 to BFM #68) to the lower limit value error set value (BFM #71 to BFM #78) and the upper limit value error set value (BFM #81 to BFM #88).

Setting range

-16,000 to +16,000

8-30

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.18 BFM #71 to BFM #78: Lower limit, error set value BFM #81 to BFM #88: Upper limit, error set value

When using the upper/lower limit value det ection func tion (BFM # 22 b1), wr ite th e lower limit value of each channel to BFM #71 to BFM #79 and the upper limit value of each channel to BFM #81 to BFM #88. When using the data addition funct ion (BFM #22 b0 ) together, write the value added by the addition data (BFM #61 to BFM #68) to BFM #71 to BFM #78 and BFM #81 to BFM #88.

Setting range

The setting range varies depending on the setting of the input mode (BFM #0, BFM #1). The table below shows the setting range in each input mode. Write the set value in a digital value.

Table 8.10: Setting range

Initial value

Input mode (BFM #0, BFM #1) Setting range

0: Voltage input mode (-10 to +10 V), resolution 10 V x 1/16,000 -16384 to 16383 -16384 16383 1: Voltage input mode (-10 to +10 V), resolution 10 V x 1/4,000 -4096 to 4095 -4096 4095 2: Voltage input mode, analog v alue direct display (-10,000 to +10,000 ) 3: Current input mode (4 to 20 mA), reso lution 20 mA x 1/8,000 -1 to 8191 -1 8191 4: Current input mode (4 to 20 mA), reso lution 20 mA x 1/4,000 -1 to 4095 -1 4095 5: Current input mode, analog value direct display (4,000 to 20,000) 3999 to 20400 3999 20400 6: Current input mode (-20 to +20 mA), reso lution 20 mA x 1/8,000 -8192 to 8191 -8192 8191

-10200 to 10200 -10200 10200

Lower

limit

8-31

Upper

limit

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.10: Setting range

Initial value

Input mode (BFM #0, BFM #1) Setting range

7: Current input mode (-20 to +20 mA), reso lution 20 mA x 1/4,000 -4096 to 4095 -4096 4095 8: Current input mode, analog value direct display (-20,000 to +20,000) 9: Thermocouple i nput mode (K type), Celsius display -1000 to 12000 -1000 12000 A: Thermocouple input mode (J type ), Celsius display -1000 to 6000 -1000 6000 B: Thermocouple input mode (T type ), Celsius display -1000 to 3500 -1000 3500 C: Thermocouple input mode (K type ), Farenheit display -1480 to 21920 -1480 21920 D: Thermocouple input mode (J typ e), Farenheit display -1480 to 11120 -1480 11120 E: Thermocouple input mode (T type ), Farenheit display -1480 to 6620 -1480 6620 F: Channel unusable Invalid -1 1

-20400 to 20400 -20400 20400

Lower

limit

Upper

limit

8-32

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.19 BFM #91 to BFM #98: Sudden change detection set value

When using the sudden change detection function (BFM #22 b2), write the set value to judge the sudden change. When the data (BFM #10 to BFM #17) of each channel is updated, if the difference between the previous value and the new value is larger than the sudden change detection set value (BFM #91 to BFM #98), the result is written to the sudden change detection status (BFM #27).

Setting range

The setting range varies depending on the setting of the input mode (BFM #0, BFM #1). The table below shows the setting range in each input mode. Write the set value in a digital value.

Table 8.11: Setting range

Input mode (BFM #0, BFM #1) Setting range Initial value

0: Voltage input mode (-10 to +10 V), reso lution 10 V x 1/16,000 1 to 16383 1600 1: Voltage input mode (-10 to +10 V), resolution 10 V x 1/4,000 1 to 4095 400 2: Voltage input mode, analog v alue direct display (-10,000 to +10,000 ) 3: Current input mode (4 to 20 mA), reso lution 20 mA x 1/8,000 1 to 4095 400 4: Current input mode (4 to 20 mA), reso lution 20 mA x 1/4,000 1 to 2047 200 5: Current input mode, analog value direct display (4,000 to 20,000) 1 to 8191 800 6: Current input mode (-20 to +20 mA), reso lution 20 mA x 1/8,000 1 to 8191 800 7: Current input mode (-20 to +20 mA), reso lution 20 mA x 1/4,000 1 to 4095 400 8: Current input mode, analog value direct display (-20,000 to +20,000) 9: Thermocouple i nput mode (K type), Celsius display 1 to 6500 650

1 to 10000 1000

1 to 20000 2000

8-33

FX2N-8AD Analog input block Buffer Memory (BFM) 8

Table 8.11: Setting range

Input mode (BFM #0, BFM #1) Setting range Initial value

A: Thermocouple input mode (J type ), Celsius display 1 to 3500 350 B: Thermocouple input mode (T type ), Celsius display 1 to 4500 450 C: Thermocouple input mode (K type), Farenheit display 1 to 11700 1170 D: Thermocouple input mode (J type), Farenheit display 1 to 6300 630 E: Thermocouple input mode (T type ), Farenheit display 1 to 4050 405 F: Channel unusable Invalid 0

8-34

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.20 BFM #99: Clears upper/lower limit value error and sudden change detection error

The commands to clear the lower limit value error, the upper limit value error and the sudden change detection error are assigned to the lower three bits of BFM #99. When a bit is set to ON, the flag of the correspond ing error status (BFM #26, BFM #27 ) is reset for all channels at a time. After reset is finished, each bit of BFM #99 returns automatically to OFF. You can set two or more clear commands to ON at a time.

Table 8.12: Bit assignment in BFM #99

Bit No. Description

b0 Clears lower limit va lue error. b1 Clears upper limit value error. b2 Clears sudden change detection error.

b3 to b15 Unused

8-35

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.21 BFM #101 to BFM #108: Peak value (minimum value) BFM #111 to BFM #118: Peak value (maximum value)

When you use the pe ak value hold function (BFM #22 b3), one of the convenient functions, the minimum value of the data (BFM #10 to BFM #17) of each channel is written to BFM #101 to BFM #108, and the maximum value is written to BFM #111 to BFM #118. When you use the data addit ion function (BFM #22 b0) t ogether, the minimum/maximum measured value added by the addition data is written.

Initial value

When the peak hold function is not used: K0 When the peak hold function is used: Digital value when the power is turned on

8-36

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.22 BFM #109: Peak value reset flag (minimum value) BFM #119: Peak value reset flag (maximum value)

When you use the peak value hold function (BFM #22 b3), BFM #109 clears the peak value (minimum value) stored in BFM #101 to BFM #108, and BFM #119 clears the peak value (maximum value) stored in BFM #111 to BFM #118. The channel No. to be reset is assigned to each bit of BFM #109 and BFM #119. When a bit is set to ON, the peak value of the assigned channel is cleared.

(You can set two or more bits to ON at a time.)

Table 8.13: Bit assignment

BFM #109

BFM #119

Bit No. b15 to b8 b7 b6 b5 b4 b3 b2 b1 b0

Channel No.

Unusable

(BFM No.)

Bit No. b15 to b8 b7 b6 b5 b4 b3 b2 b1 b0

Channel No.

Unusable

(BFM No.)

CH8

(#108)

CH8

(#108)

CH7

(#107)

CH7

(#107)

CH6

(#106)

CH6

(#106)

CH5

(#105)

CH5

(#105)

CH4

(#104)

CH4

(#104)

CH3

(#103)

CH3

(#103)

CH2

(#102)

CH2

(#102)

CH1

(#101)

CH1

(#101)

8-37

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.23 BFM #198: Data history sampling time

Set the data history sampling time. BFM #198 is valid only in channels for which the number of times of averaging (BFM #2 to #9) is set to "1".

Setting range

0 to 30,000 ms

Sampling cycle

When only voltage input and current input are used

When the set value is "0" : 500 µs x Number of effective channels When the set value is "1" or more : Set value (ms) x Number of effective channels

When thermocouple input is used for one or more channels

Channel for voltage input or current input When the set value is "0" or "1": 1 ms x Number of effective channels When the set value is "2" or more: Set value (ms) x Number of effective channels

Channel for thermocouple input

When the set value is "0" to "39" : 40 ms x Number of effective channels When the set value is "40" or more : Set value (ms) x Number of effective channels

8-38

FX2N-8AD Analog input block Buffer Memory (BFM) 8

When the high-speed conversion mode is used (and only voltage input and current input are used)

When the set value is "0" or "1"

Channel specified for high-speed conversion : 1 ms Other channels : 1 ms x Number of effective channels

When the set value is "2" or more

Channel specified for high-speed conversion : Set value (ms) x Number of effective

channels

Other channels : Set value (ms) x Number of effective

channels x 2

• "Number of effec tiv e channel s" indicates the n umber of all channels f or which the number of

times of averaging (BFM #2 to BFM #9) is set to "1" without regard to the input mode (voltage input, current input or thermocouple input).

8-39

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.24 BFM #199: Resets or stops data history

The data history reset function is assigned to the lower eight bits of BFM #199. The data history stop function is assigned to the upper eight bits of BFM #199. Each function is valid only in channels for which the number of times of averaging (BFM #2 to #9) is set to "1".

Data history reset function

This function clears the sampled data history in each channel. The channel No. to be reset is assigned to each of the lower eight bits of BFM #199. When a bit is set to ON, the data history (all contents from the 1st value to the 400th value) of the assigned channel is cleared. (You can set two or more bits to ON at a time.) When the clear operation is completed, each bit returns automatically to OFF.

Table 8.14: Assignment of lower eight bits

Bit No. b7 b6 b5 b4 b3 b2 b1 b0

Channel No. CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

Data history stop function

This function stops temporarily sampling of the data history in the unit of channel. The channel No. to be stopped temporarily is assigned to each of the upper eight bits of BFM #199. When a bit is set to ON, sampling of the data histor y of the assigned channel is stopped temporarily. (You can set two or more bits to ON at a time.) When a bit is set to OFF, sampling of the data history of the assigned channel restarts.

Table 8.15: Assignment of upper eight bits

Bit No. b15 b14 b13 b12 b11 b10 b9 b8

Channel No. CH8 CH7 CH6 CH5 CH4 CH3 CH2 CH1

8-40

FX2N-8AD Analog input block Buffer Memory (BFM) 8

8.2.25 BFM #200 to BFM #3399: Data history

The A/D conversion of each channel is sampled, and written to BFM #200 to BFM #3399. The table bel o w shows the assignment of ch annel No. and BFM No. Data is st ored in turn from the smallest BFM No. Up to 400 values can be stored for each channel. When the number of values exceeds "400", the existing data is overwritten with new data from the smallest BFM No. Data history samp ling is valid only in channels for which the number of times of averaging (BFM #2 to #9) is set to "1".

Table 8.16: Assignment of channel No. and BFM No.

BFM No.

Channel No.

1st value 2nd value 3rd value • • • • • 400th value

CH1 #200 #201 #202 • • • • • #599 CH2 #600 #601 #602 • • • • • #999 CH3 #1000 #1001 #1002 • • • • • #1399 CH4 #1400 #1401 #1402 • • • • • #1799 CH5 #1800 #1801 #1802 • • • • • #2199 CH6 #2200 #2201 #2202 • • • • • #2599 CH7 #2600 #2601 #2602 • • • • • #2999 CH8 #3000 #3001 #3002 • • • • • #3399

• If much data history is read at a time to the PLC main unit by one FR OM instruction, a w atch

dog timer error occurs in the PLC main unit. In such a case, divide the required data histor y using many FROM instructions, and inser t the WDT instruction (watch dog timer refresh instruction) after each FROM instruction.

8-41

FX2N-8AD Analog input block Buffer Memory (BFM) 8

MEMO

8-42

FX2N-8AD Analog input block

9. Adjustment of I/O Characteristics

At the time of shipment from the factory, the FX2N-8AD has the standard I/O characteristics in accordance with each input mode (BFM #0, BFM #1). In the voltage input mode and the current input mode, you can adjust the standard I/O characteristics for each channel. (You cannot adjust the standard I/O characteristics in the analog value direct output mode and the thermocouple input mode.)

Adjustment of I/O Characteristics 9

9-1

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

Digital value

-10 10

4,000

Approx. +4,080

Approx.

+10.2 V

Approx.

-10.2 V

-4,000 Approx. -4,080

Input

voltage

(V)

9.1 Standard I/O characteristics

Explanation on description

The input mode of the standard I/O characteristics is abbreviated as shown below.

0. Voltage input, -10 to 10V, 20V × 1/32,000

Figure 9.1: Standard I/O characteristics

0. Voltage input, -10 to +10 V, 20 V × 1/32,000 1. Voltage input, -10 to +10 V, 20 V x 1/8,000

➀

: Input mode set in BFM #0, BFM #1

➀

: Input mode

➁

: Analog input range

➂

: Resolution

➃

Approx. +16,320

Input

voltage

(V)

➁

Digital value

16,000

-10 10

➂

➃

• In the analog value direct display mode and the thermocouple input mode,

input range and

Approx.

+10.2 V

Resolution are omitted.

➃

Analog

➂

-10.2 V

Approx.

-16,000 Approx. -16, 32 0

9-2

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

Digital value

Input current

(mA)

04 20

8,000

Digital value

Input current

(mA)

04 20

20,000

4,000

2. Voltage input, direct display (-10,000 to +10,000) 3. Current input, 4 to 20 mA, 16 mA x 1/8,000

Digital value

Approx. -10, 20 0

10,000

Input

voltage

(V)

-10 10

-10.2 V

Approx.

-10,000 Approx. +10,200

Approx.

+10.2 V

4. Current input, 4 to 20 mA, 16 mA x 1/4,000 5. Current input, direct display (4,000 to 20,000)

Digital value

4,000

04 20

Input current

(mA)

9-3

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

Digital value

-20 20

4,000

-4,000

Input

current

(mA)

Digital value

12,000

-1,000

Input

temperature

(°C)

-100 1,200

6. Current input, -20 to +20 mA, 40 mA x 1/16,000 7. Current input, -20 to +20 mA, 40 mA x 1/8,000

Digital value

8,000

Input

current

(mA)

-20

8. Current input, direct display (-20,000 to +20,000) 9. Thermocouple input, K type, Celsius

Input

current

(mA)

-20

Digital value

20,000

-8,000

-20,000

9-4

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

Digital value

3,500

-1,000

Input

temperature

(°C)

-100

350

Digital value

11,120

-1,480

Input

temperature

(°F)

-148 1,112

A. Thermocouple input, J type, Celsius B. Thermocouple input, T type, Celsius

Digital value

6,000

Input

temperature

(°C)

-100 0

-1,000

600

C. Thermocouple input, K type, Farenheit D. Thermocouple input, J type, Farenheit

Digital value

21,920

Input

temperature

(°F)

-148 0

-1,480

2,192

9-5

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

E. Thermocouple input, T type, Farenheit

Digital value

6,620

Input

temperature

(°F)

-148 0

-1,480

662

9-6

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

9.2 Adjustment of I/O characteristics

Adjust the I/O characteristics using the buffer memories in the FX2N-8AD. At first, write the input mode to BFM #0 and BFM #1, write the offset data to BFM #41 to BFM #48, then write the gain data to BFM #51 to BFM #58. Afte r that, update the offset data and the gain data of each channel using BFM #21.

9-7

FX2N-8AD Analog input block Adjustment of I/O Characteristics 9

Figure 9.2: Example program

X000

Operation start instruction

SET

K50

RST M0

K0 K0 H1600 K1

K0 K1 HFFA1 K1

K0 K41 K0 K2

K0 K51 K1250 K2

K0 K44 K0 K1

K0 K54

K0 K21 H00FF K1

K10000

Specifies the input mode of CH1 to CH4.

Specifies the input mode of CH5 to CH8.

Writes the of fset value of CH1 and CH2.

Writes the gai n value of CH1 and CH2.

Writes the of fset value of CH4.

Writes the gai n value of CH4.

Writes the offset v al ue and gain value of al l channels at a time.

*1 It takes approximately 5 seconds to change the input mode (BFM #0, BMF #1) (to change

each set value). Assure the time inte rval of 5 seco nds or more after ch ange of th e input mode until execution of write of each setting (TO instruction).

• The I/O characteristics can be written (by BFM #21) to one channel at a time, or two or more channels at a time.

9-8

FX2N-8AD Analog input block

10. Example program

This section introduces an example of program to tak e analog data to the PLC using the FX2N8AD.

Condition

Example program 10

System configuration:

The FX

-8AD (unit No. 0) is connected as a special block nearest to the FX2N/FX

Series PLC main unit.

Input mode:

CH1 and CH2 : Mode 0 (voltage input, -10 to +10 V, resolution 20 V x 1/32,000) CH3 and CH4 : Mode 3 (current input, +4 to +20 mA, resolution 16 mA x 1/8,000) CH5 and CH6 : Mode 9 (thermocouple input, K type, Celsius display) CH7 and CH8 : Mode F (unused)

Number of times of averaging:

1 (initial valu e) in each channel

I/O characteristics:

Standard I/O characteristics (initial value) in each channel

Convenient function:

Upper/lower limit value detection function is used.

2NC

10-1

FX2N-8AD Analog input block Example program 10

Data history function:

Used while sampling time is set to 0 ms (initial value). CH1 to CH4 : Sampling time = 1 ms x 6 (Number of effective channels) = 6 ms CH5 and CH6 : Sampling time = 40 ms x 6 (Number of effective channels) = 240 ms

I/O assignment:

X001 : Clears the upper/lower limit value error. X002 : Clears the scale over error. Y000 to Y017 : Output the upper/lower limit value error status of each channel. Y020 to Y037 : Output scale over status of each channel.

10-2

FX2N-8AD Analog input block Example program 10

Figure 10.1:Example program

Initial pulse

M8002

RUN monitor

M8000

Clear of upper/ lower limit value error

X001

Clear of scale over error

X002

FNC 79 TO

FNC 79

TO FNC 78

FROM FNC 78

FROM FNC 79

FNC 79

K0 K0 H3300 K1

K0 K1 HFF99 K1

K50

K0 K22 H0002 K1

K0 K10 D0 K6

K0 K26 K4M0 K1

K0 K28 K4M20 K1

K0 K29 D6 K1

K0 K99 H0003 K1

K0 K28 K0 K1

As for the cha nged i nput

Specifies the input mode of CH1 to CH4.

mode, the power fai l ure maintenance is done by EEPROM.

Specifies the input mode of CH5 to CH8.

Stand by for fi ve seconds.

The change of program i n the input mode and stand by for five sec onds can be omitted. At use the input mode memorized in EEPROM.

Enables the upper/lower limit value detection function. Reads the channel data from CH1 to CH6.

.....

(CH1

D0, CH2 → D1,

→

CH6 → D5)

Reads the upper/lower limit value error stat us. (M0 to M15)

Reads the scale over statu s. (M20 to M25)

Reads the error status. (BFM #29

→

D6)

Clears the upper/lower limit value error.

Clears the sc al e over error.

10-3

FX2N-8AD Analog input block Example program 10

Lower limit value error of CH1

Upper limit value error of CH1

• • •

Upper limit value error of CH8

M15

Scale over error of CH1 (lower limit value)

M20

Scale over error of CH1 (upper limit value)

M21

• • •

Scale over error of CH8 (upper limit value)

M35

Outputs the upper/ l ower limit value error status of each c hanne l.

Y17

Y20

Y21

Outputs the scale over error st a t us of each channe l.

Y37

10-4

FX2N-8AD Analog input block Example program 10

FNC 78 FROM

FNC 07 WDT

FNC 78 FROM

FNC 07 WDT

FNC 78 FROM

FNC 07 WDT

FNC 78 FROM

FNC 07 WDT

END

K0 K200 D10 K10

K0 K600 D20 K10

K0 K1000 D30 K10

K0 K2200 D60 K10

Reads the CH1 data his tory (for 10 tim e s) to D10 to D19.

Refreshes the watch dog timer.*1

Reads the CH2 data his tory (for 10 tim e s) to D20 to D29.

Refreshes the watch dog timer.*1

Reads the CH3 data his tory (for 10 tim e s) to D30 to D39.

Refreshes the watch dog timer.*1

Reads the CH6 data his tory (for 10 tim e s) to D60 to D69.

Refreshes the watch dog timer.*1

Note:

When many FROM/TO instructions are executed in the same scan, the PLC might have a watchdog timer error. In this case, add a watchdog timer reset (FNC07 WDT) instruction with each FROM/TO instruction.

10-5

FX2N-8AD Analog input block Example program 10

MEMO

10-6

FX2N-8AD Analog input block

Appendix A: Associated Manuals List

For further information manual about FX Series, refer to following table.

Table A-1: List of Further Information Manual

Manual Name Manual No. Description

/FX0N Hardware Manual JY992D47501

Hardware Manual JY992D88201

Hardware Manual JY992D66301

Appendix A

This manual contains hardware explanations of wiring, installation and specifications for FX0 and FX0N Series programmable controllers.

This manual contains hardware explanations of wiring, installation and specifications for FX1N Series programmable controllers.

This manual contains hardware explanations of wiring, installation and specifications for FX2N Series programmable controllers.

Hardware Manual JY992D76401

2NC

FX Programming Manual JY992D48301

FX Programming Manual

JY992D88101

This manual contains hardware explanations of wiring, installation and specifications for FX

2NC

Series

programmable controllers. This manual contains instruction explanations for the

, FX0S, FX0N, FX, FX2C, FX2N and FX

Series

2NC

programmable controllers. This manual contains instruction explanations for the

, FX1N, FX2N and FX

Series programmable

2NC

controllers.

A-1

FX2N-8AD Analog input block Appendix A

MEMO

A-2

USER’S MANUAL

FX2N-8AD Analog input block

HEAD OFFICE: MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO 100-8310 HIMEJI WORKS: 840, CHIYODA CHO, HIMEJI, JAPAN

MODEL

MODEL CODE

JY992D86001C (MEE)

FX2N-8AD-U-E

09R608

Effective Apr. 2003

Specifications are subuject tochange without notice.

Mitsubishi Electronics FX2N-8AD User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

FX2N-8AD Analog input block Contents.

1. Introduction

2. External Dimensions

3. Part Name

4. Installation

5. Connection to PLC

6. Wiring

6.1 Caution

7. Specifications

8. Buffer Memory (BFM)

8.1 Buffer Memories (BFM) lists

8.2 Details of buffer memories

8.2.1 BFM #0, #1: Specifies input mode.

8.2.2 BFM #2 to BFM #9: Number of times of averaging

8.2.3 BFM #10 to BFM #17: Channel data

8.2.4 BMF #19: Disables setting change

8.2.5 BFM #20: Initializes functions

8.2.6 BFM #21: Writes I/O characteristics

8.2.7 BFM #22: Sets convenient functions

8.2.8 BFM #24: Specifies high-speed conversion channel

8.2.9 BFM #26: Upper/lower limit value error status

8.2.10 BFM #27: A/D data sudden change detection status

8.2.11 BFM #28: Scale over status

8.2.12 BFM #29: Error status

8.2.13 BFM #30: Model code

8.2.14 BFM #32: Operating time

8.2.15 BFM#33 disconnection detection (Only goods: since V1.10).

8.2.16 BFM #41 to BFM #48: Offset data BFM #51 to BFM #58: Gain data

8.2.17 BFM #61 to BFM #68: Addition data

8.2.19 BFM #91 to BFM #98: Sudden change detection set value

8.2.20 BFM #99: Clears upper/lower limit value error and sudden change detection error

8.2.23 BFM #198: Data history sampling time

8.2.24 BFM #199: Resets or stops data history

8.2.25 BFM #200 to BFM #3399: Data history

9. Adjustment of I/O Characteristics

9.1 Standard I/O characteristics

9.2 Adjustment of I/O characteristics

10. Example program