Mitsubishi Electric FX2N-8AD User manual

USER’S MANUAL
FX2N-8AD Analog input block
Industrial automation
Elincom Group
EuropeanUnion:www.elinco.eu
Russia: www.elinc.ru

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 FX2N-8AD Analog input block. It should be read and understood before attempting to
install or use the unit.
• Further information can be found in the FX0N/FX1N/FX2N/FX2NC/FX3U/FX3UC Series Hardware Manual for
connecting main unit, and the FX Series Programming Manual(ΙΙ).
• If in doubt at any stage of the installation of FX2N-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
USER’S MANUAL
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses.
Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
FX2N-8AD Analog input block
Manual number :JY992D86001
Manual revision :F
Date :September 2008

FX2N-8AD Analog input block
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FX2N-8AD Analog input block
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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.

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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 WILL cause physical and property damage.
2) Indicates that the identified danger could POSSIBLY cause physical and property
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.

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• 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.

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FX2N-8AD Analog input block Contents.
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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

FX2N-8AD Analog input block Contents.
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8.2.14 BFM #32: Operating time..................................................................................8-26
8.2.15 BFM#33 disconnection detection (Only goods: since V1.10)............................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: Lower 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 (minimum 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