YOKOGAWA FLXA21 User manual

User’s
Manual FLXA21
2-Wire Analyzer
PROFIBUS PA Communication
IM 12A01A02-72E
IM 12A01A02-72E
3rd Edition

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
uIntroduction
Thank you for purchasing the FLXA21 2-Wire Analyzer.
Please read the following respective documents before installing and using the FLXA21.
This manual describes only those topics that are required for operation of the PROFIBUS PA
communications.
For information about the FLXA21 other than PROFIBUS PA, refer to the User’s Manual (IM
12A01A02-01E).
nNotes on Handling User’s Manuals
• Pleasehandovertheuser’smanualstoyourenduserssothattheycankeeptheuser’s
manuals on hand for convenient reference.
• Pleasereadtheinformationthoroughlybeforeusingtheproduct.
• Thepurposeoftheseuser’smanualsisnottowarrantthattheproductiswellsuitedtoany
particular purpose but rather to describe the functional details of the product.
• Nopartoftheuser’smanualsmaybetransferredorreproducedwithoutpriorwritten
consent from YOKOGAWA.
• YOKOGAWAreservestherighttomakeimprovementsintheuser’smanualsandproductat
any time, without notice or obligation.
• Ifyouhaveanyquestions,oryoundmistakesoromissionsintheuser’smanuals,please
contact our sales representative or your local distributor.
nDrawing Conventions
Somedrawingsmaybepartiallyemphasized,simplied,oromitted,fortheconvenienceof
description.
Some screen images depicted in the user’s manual may have different display positions or
character types (e.g., the upper / lower case). Also note that some of the images contained in this
user’s manual are display examples.
nModel Name used in this Manual
The model names, FLXA21-PH and FLXA21-SC, are used in this manual.
The FLXA21-PH means the FLXA21 with the output of PROFIBUS PA communication and with
measurement of pH and/or ORP. The exact model & style code is as follows;
FLXA21-D-P-D-AA-P1-NN-P-N-LA-N-NN(1stinput:pH/ORP)
or
FLXA21-D-P-D-AA-S1-NN-P-N-LA-N-NN(1stinput:pH/ORP(SENCOMsensor))
And, the FLXA21-SC means the FLXA21 with the output of PROFIBUS PA communication and
with measurement of conductivity. The exact model & style code is as follows;
FLXA21-D-P-D-AA-C1-NN-P-N-LA-N-NN(1stinput:Conductivity(SC))
MediaNo.IM12A01A02-72E 3rdEdition:Oct.2015(YK)
AllRightsReservedCopyright©2015,YokogawaElectricCorporation

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
uSafety Precautions
n Safety,Protection,andModicationoftheProduct
• Inordertoprotectthesystemcontrolledbytheproductandtheproductitselfandensure
safe operation, observe the safety precautions described in this user’s manual. We assume
no liability for safety if users fail to observe these instructions when operating the product.
• Ifthisinstrumentisusedinamannernotspeciedinthisuser’smanual,theprotection
provided by this instrument may be impaired.
• Ifanyprotectionorsafetycircuitisrequiredforthesystemcontrolledbytheproductorfor
the product itself, prepare it separately.
• BesuretousethesparepartsapprovedbyYokogawaElectricCorporation(hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modicationoftheproductisstrictlyprohibited.
• Thefollowingwordsareusedthismanual.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
nWarning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
nFLXA21
• TheFLXA21shouldonlybeusedwithequipmentthatmeetstherelevantIEC,American,
Canadian, and Japanese standards. Yokogawa accepts no responsibility for the misuse of
this unit.
• Don’tinstall“generalpurposetype”instrumentsinthehazardousarea.
• TheInstrumentispackedcarefullywithshockabsorbingmaterials,nevertheless,the
instrument may be damaged or broken if subjected to strong shock, such as if the
instrument is dropped. Handle with care.
CAUTION
Electrostatic discharge
The FLXA21 contains devices that can be damaged by electrostatic discharge.
When servicing this equipment, please observe proper procedures to prevent such damage.
Replacement components should be shipped in conductive packaging. Repair work should
be done at grounded workstations using grounded soldering irons and wrist straps to avoid
electrostatic discharge.
CAUTION
• Donotuseanabrasiveororganicsolventincleaningtheinstrument.
• SubstitutionofcomponentsmayimpairsuitabilityforDivision2.
Do not remove or replace while circuit is live unless area is known to be non-hazardous.
Explosion Hazard – Do not disconnect equipment unless area is known to be
nonhazardous.
Do not reset circuit breaker unless power has been removed from the equipment or the area
is known to be non-hazardous.
• ThisinstrumentisaEN61326-1ClassAproduct,anditisdesignedforuseintheindustrial
environment. Please use this instrument in the industrial environment only.
lHow to dispose the batteries:
ThisisanexplanationaboutthenewEUBatteryDirective(DIRECTIVE2006/66/EC).This
directive is only valid in the EU.
Batteries are included in this product. Batteries incorporated into this product cannot be removed
by yourself. Dispose them together with this product.
WhenyoudisposethisproductintheEU,contactyourlocalYokogawaEuropeB.V.ofce.Donot
dispose them as domestic household waste.
Batterytype:Manganesedioxidelithiumbattery
Notice: The symbol means they shall be sorted out and collected as ordained in
ANNEXIIinDIRECTIVE2006/66/EC.

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
lRegulatory Compliance
Safety: UL61010-1
   UL61010-2-030
   CAN/CSAC22.2No.61010-1
   CAN/CSA-C22.2No.61010-2-030
EMC:EN61326-1ClassA,Table2(Foruseinindustriallocations)
   Inuenceofimmunityenvironment(CriteriaA):±25%ofF.S.
  EN61326-2-3
  EN61326-2-5
  AS/NZSCISPR11
Korea Electromagnetic Conformity Standard Class A 한국 전자파적합성 기준
A급 기기 (업무용 방송통신기자재)
이 기기는 업무용(A급) 전자파적합기기로서 판매자 또는
사용자는 이 점을 주의하시기 바라며, 가정외의 지역에서
사용하는 것을 목적으로 합니다.
Installationaltitude: 2000morless
CategorybasedonIEC61010:I(Note1)
PollutiondegreebasedonIEC61010:2(Note2)
Note1: Installationcategory,calledover-voltagecategory,speciesimpulsewithstandvoltage.
Equipment with “Category I” (ex. two-wire transmitter) is used for connection to circuits in which measures are taken
to limit transient over-voltages to an appropriately low level.
Note2: Pollutiondegreeindicatesthedegreeofexistenceofsolid,liquid,gasorotherinclusionswhichmayreduce
dielectric strength. Degree 2 is the normal indoor environment.
nWarranty and service
Yokogawa products and parts are guaranteed free from defects in workmanship and material
under normal use and service for a period of (typically) 12 months from the date of shipment from
the manufacturer.
Individual sales organisations can deviate from the typical warranty period, and the conditions of
sale relating to the original purchase order should be consulted. Damage caused by wear and
tear, inadequate maintenance, corrosion, or by the effects of chemical processes are excluded
from this warranty coverage.
In the event of warranty claim, the defective goods should be sent (freight paid) to the service
department of the relevant sales organisation for repair or replacement (at Yokogawa discretion).
Thefollowinginformationmustbeincludedintheletteraccompanyingthereturnedgoods:
• Partnumber,modelcodeandserialnumber
• Originalpurchaseorderanddate
• Lengthoftimeinserviceandadescriptionoftheprocess
• Descriptionofthefault,andthecircumstancesoffailure
• Process/environmentalconditionsthatmayberelatedtothefailureofthedevice.
• Astatementwhetherwarrantyornonwarrantyserviceisrequested
• Completeshippingandbillinginstructionsforreturnofmaterial,plusthenameandphone
number of a contact person who can be reached for further information.
Returnedgoodsthathavebeenincontactwithprocessuidsmustbedecontaminated/
disinfectedbeforeshipment.Goodsshouldcarryacerticatetothiseffect,forthehealthand
safety of our employees.
Material safety data sheets should also be included for all components of the processes to which
the equipment has been exposed.

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
nCopyright and Trademark Notices
The copyrights of online manual contained in the CD-ROM are reserved.
TheonlinemanualisprotectedbythePDFsecurityfrommodication,however,itcanbeoutput
via a printer. Printing out the online manual is only allowed for the purpose of using the product.
When using the printed information of the online manual, check if the version is the most recent
one by referring to the CD-ROM’s version.
Nopartoftheonlinemanualmaybetransferred,sold,distributed(includingdeliveryviaa
commercial PC network or the like), or registered or recorded on video tapes.
FLEXA, FLXAandSENCOMareregistered trademarks of Yokogawa Electric Corporation.
Adobe, Acrobat and Acrobat Reader are either registered trademarks or trademarks of Adobe
Systems Incorporated in the United States and/or other countries.
All other company and product names mentioned in this user’s manual are trademarks or
registered trademarks of their respective companies.
We do not use TM or ® mark to indicate those trademarks or registered trademarks in this user’s
manual.
lFLXA21’s fonts
(c) Copyright 2000-2001 /efont/ The Electronic Font Open Laboratory. All rights reserved.
Redistributionanduseinsourceandbinaryforms,withorwithoutmodication,arepermitted
providedthatthefollowingconditionsaremet:
1. Redistributions of source code must retain the above copyright notice, this list of conditions
and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of
conditions and the following disclaimer in the documentation and/or other materials provided
with the distribution.
3. Neitherthenameoftheteamnorthenamesofitscontributorsmaybeusedtoendorseor
promoteproductsderivedfromthisfontwithoutspecicpriorwrittenpermission.
THISFONTISPROVIDEDBYTHETEAMANDCONTRIBUTORS“ASIS”ANDANY
EXPRESSORIMPLIEDWARRANTIES,INCLUDING,BUTNOTLIMITEDTO,THEIMPLIED
WARRANTIESOFMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE
AREDISCLAIMED.INNOEVENTSHALLTHETEAMORCONTRIBUTORSBELIABLEFOR
ANYDIRECT,INDIRECT,INCIDENTAL,SPECIAL,EXEMPLARY,ORCONSEQUENTIAL
DAMAGES(INCLUDING,BUTNOTLIMITEDTO,PROCUREMENTOFSUBSTITUTEGOODS
ORSERVICES;LOSSOFUSE,DATA,ORPROFITS;ORBUSINESSINTERRUPTION)
HOWEVERCAUSEDANDONANYTHEORYOFLIABILITY,WHETHERINCONTRACT,
STRICTLIABILITY,ORTORT(INCLUDINGNEGLIGENCEOROTHERWISE)ARISINGINANY
WAYOUTOFTHEUSEOFTHISFONT,EVENIFADVISEDOFTHEPOSSIBILITYOFSUCH
DAMAGE.

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IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
FLXA21
2-Wire Analyzer
PROFIBUS PA Communication
CONTENTS
IM 12A01A02-72E 3rd Edition
uIntroduction....................................................................................................i
uSafety Precautions .......................................................................................ii
1. About PROFIBUS PA................................................................................ 1-1
1.1 Internal Structure of FLXA21 ........................................................................... 1-1
1.2 Logical Structure of Each BLOCK .................................................................. 1-2
1.3 WiringSystemConguration .......................................................................... 1-2
2. Preparation................................................................................................ 2-1
2.1 Cables, terminals and glands for PROFIBUS PA........................................... 2-1
2.2 Shielding and grounding ................................................................................. 2-3
2.3 How to download EDD for PDM....................................................................... 2-3
3. Getting Started.......................................................................................... 3-1
3.1 Connection of Devices ..................................................................................... 3-1
3.2 Host Setting ....................................................................................................... 3-2
3.3 Bus Power ON ................................................................................................... 3-2
3.4 Bus Address Setup ........................................................................................... 3-2
3.5 Notes When Using the FLXA21-SC Concentration Table (when using
FieldMate) .......................................................................................................... 3-3
3.6
PRIMARY/SECONDARY/TERTIARY/QUATERNARY_VALUE Value Assignment .... 3-3
4. Explanation of Basic Item........................................................................ 4-1
4.1 Reading cyclic parameters .............................................................................. 4-1
4.2 IntegrationofGSDleandIDENTNumber.................................................... 4-1
4.3 Reading acyclic parameters ............................................................................ 4-2
4.4 Function Block Parameters ............................................................................. 4-3
4.5 Setting and change of basic parameters ....................................................... 4-6
4.6 Setting the AI Function Blocks........................................................................ 4-7
5. In-Process Operation............................................................................... 5-1
5.1 Mode Transition ................................................................................................ 5-1
5.2 Generation of Alarm.......................................................................................... 5-1
5.3 Simulation Function ......................................................................................... 5-2
5.4 Write lock (Write-protect) function.................................................................. 5-2
6. Function block parameters and Methods.............................................. 6-1
6.1 Physical Block Parameters.............................................................................. 6-2
6.2 Analog Input Block Parameters ...................................................................... 6-4

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6.3 Transducer block parameters ......................................................................... 6-5
6.4 Diagnostic Information................................................................................... 6-13
6.5 Status of Each Parameter in Failure Mode................................................... 6-24
Revision Record.......................................................................................................i

<1. About PROFIBUS PA> 1-1
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
1. About PROFIBUS PA
PROFIBUS PA is a widely used bi-directional digital communication protocol that enables the
implementation technologically advanced process control systems.
FLXA21PROFIBUSPAcommunicationtypemeetsthespecicationsofPROFIBUS
PANutzerorganisatione.V.andisinteroperablewithdevicesfromYokogawaandother
manufacturers.
For information on other features, engineering, design, construction work, startup and
maintenanceofPROFIBUSPA,refertothePROFIBUSPANutzerorganisatione.V.website:
www.probus.com
1.1 Internal Structure of FLXA21
The FLXA21 contains a structured mapping of function blocks. Each function block serves a
specictask.
lPhysical block
• ManagesthestatusofFLXA21hardware.
• Automaticallyinformsthehostofanydetectedfaultsorotherproblems.
lTransducer block
• ConvertssensorinputtoprocessvalueswhicharetransferredtoAIfunctionblockby
channels.
lAI function blocks
• ConditionsrawdatafromtheTransducerblock.
• Outputsconditionedprocessvalues
• Carriesoutscaling,dampingandsquarerootextraction.

<1. About PROFIBUS PA> 1-2
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
1.2 Logical Structure of Each BLOCK
Sensor
input
Physical block
Block tag
Parameters
Node address
Output
AI function
block
Block tag
OUT
Parameters
AI function
block
Block tag
OUT
Parameters
AI function
block
Block tag
OUT
Parameters
Block tag
Parameters
Sensor
Transducer
block
Figure 1.1 Logical Structure of Each Block
Nodeaddress,blocktagsandcontainedparameterswithinafunctionblockarestructuredinthe
FLXA21deviceasshowningure1.1.
1.3 WiringSystemConguration
The number of devices that can be connected to a single bus and the cable length vary
depending on system design. When constructing systems, both the basic and overall design
must be carefully considered to allow device performance to be fully exhibited.

<2. Preparation> 2-1
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
2. Preparation
TheFLXA21PROFIBUSPAisprovidedwiththreecableglands.Therstisusedforthe
electrodewiringastheotherisusedforthepowerwiringshowningure2.1.
For sensor cable
For power supply
For grounding cable
Figure 2.1 Cable gland diagram
2.1 Cables, terminals and glands for PROFIBUS
PA
Wire and install the system by referring to chapter 2 in the FLXA21 instruction manual (IM
12A01A02-01E).
The PROFIBUS PA power supply is 9 to 32 V DC. The wiring is the same.
However, for the PROFIBUS PA cables see Table 2.1.
Table 2.1 PROFIBUS PA Cables and transmissible Length
Parameters Conditions Type A Type B Type C Type D
MaxDCResistance,Ω/km per conductor 22 56 132 20
Max Attenuation, dB/km 1.25f,(39kHz) 3.0 5.0 8.0 8.0
Gauge —#18 AWG
(0.82 mm2)
#22 AWG
(0.32 mm2)
#26AWG
(0.13 mm2)
#16AWG
(1.25mm2)
Max Length, meters —1,900 1,200 400 200
Note: 1900mistrunk+sumofSpurs(MaxlengthtypeAcable)
Yokogawa recommends the use of Type A.
Usage of Type B and D is restricted.
Yokogawa does not recommend the use of Type C.
Table 2.2 Recommended length of Spur Cables
Number of spur cables Length of a non-intrinsically
safe spur cable
15-16 60m
13-14 90 m
1-12 120 m
Note: •1deviceperspur.
 •Keepasshortaspossible(min1m)

<2. Preparation> 2-2
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
lWhen using a SENCOM module
WhenusingaSENCOMmodule,youneedtousethesuppliedcableclamptoxthesensor
cables in place. Attach the supplied cable clamp as shown in Figure 2.2.
Sensor cable
Cable cramp
Figure 2.2 When using a SENCOM module
lDIP switches
Figure 2.3 shows the DIP switches for setting the address and write protection.
Normally,youdonothavethechangethemfromthedefaultsettings.
Write protection switch (Default: OFF)
Address switch
(Default: Hardware address is disabled)
ON
OFF
7
ON
OFF
6 5 4 3 2 1 0
Figure 2.3 DIP switches

<2. Preparation> 2-3
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
2.2 Shielding and grounding
Grounding and shielding of the transmitter is necessary for a safe and reliable operation. Please
use one of the following schemes (A or B) as these will give proper shielding and grounding. One
should pay special attention to instruments that required an external power supply (besides the 9
to 32 V supplied by the bus).
Power
unit
Trunk cable Spur
Spur
FLXA21
Field
device
Junction
box
V1
V3
V2
V4
V1 = V2 = V3 = V4
Potential equalisation line (German practice)
Power
unit
Trunk cable Spur
Spur
FLXA21
Field
device
Junction
box
High integrity earth, 0.1R or better
Neutral star-point bonding (English practice)
A
B
Figure 2.2 Shield and grounding
2.3 How to download EDD for PDM
It takes a certain time to insert EDD to PDM package. If your PDM package doesn’t include
FLXA21 EDD, download it from the following website.
http://www.yokogawa.com/an/download/an-dl-probus-001en.htm
*: Thisaddressissubjecttochangewithoutpriornotice.Iftheaboveaddresscannotbe
accessed,consultyournearestsalesofceortheagencyfromwhichyoupurchasedthe
product.

<3. Getting Started> 3-1
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
3. Getting Started
PROFIBUSPAisfullydependentupondigitalcommunicationprotocol(EN50170Volume2and
IEC61158forISareas,PROFIBUSPA)anddiffersinoperationfromtheconventional4to20
mAtransmissioncommunicationprotocol.Itisrecommendedthatnoviceusersuseelddevices
inaccordancewiththeproceduresdescribedinthissection.Theproceduresassumethateld
devices will be set up on a bench or an instrument shop.
3.1 Connection of Devices
ThefollowinginstrumentsarerequiredforusewithPROFIBUSPAdevices:
• Powersupply:
PROFIBUS PA requires a dedicated power supply. It is recommended that current capacity
be well over the total value of the maximum current consumed by all devices. Power is
supplied by a DP/PA coupler.
• Terminators:
PROFIBUS PA requires two terminators. A terminator shall be located at each end of the
trunk cable.
• Fielddevices:
 ConnectthePROFIBUSPAcommunicationtypeelddevice.Twoormoretransmittersor
otherelddevicescanbeconnected.
• DP/PACouplers:
 PROFIBUSPArequiresDP/PAcouplerswhichconverttheRS-485signalstotheIEC
61158-2signallevelandpowertheelddevicesviathePROFIBUSPA.
• Cable:
Refer to Table 2.2.
Forapplicationsinintrinsicallysafeareas,thetransmissionmethoddenedinIEC61158-2is
usedwithPROFIUSPAThetransmissionrateinthiscaseis31.25kbit/s.DPtransmissionvia
RS-485toIEC61158-2isimplementedwiththenetworkcomponents(DP/PAcouplerorDP/PA
link.)
Connect the devices as shown in Figure 3.1. Connect the terminators at both ends of the trunk,
with a minimum length of the spur laid for connection.
The polarity of signal and power must be maintained.
FLXA21
Power
supply
Terminator
HOST Coupler/terminator
Figure 3.1 Cabling

<3. Getting Started> 3-2
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
NOTE
BeforeusingaPROFIBUSPAcongurationtoolotherthantheexistinghost,conrmitdoesnot
affect the loop functionality in which all devices are already installed in operation. Disconnect the
relevant control loop from the bus if necessary.
CAUTION
ConnectingaPROFIBUSPAcongurationtooltoaloopwithitsexistinghostmaycause
communication data scrambles resulting in a functional disorder or a system failure.
3.2 Host Setting
To activate PROFIBUS PA, the following settings are required for the host.
CAUTION
Do not turn off the power of the device immediately after setting. When the parameters are saved
to the EEPROM, the redundant processing is executed for an improvement of reliability. If the
poweristurnedoffwithin60secondsaftersettingsaremade,themodiedparametersarenot
saved and the settings may return to their original values.
ForcyclicdatacommunicationaGSDleisrequired.Thislecontainsallnecessaryinformation
tostartthistypeofcommunication.PleasemakesuretheGSDleisintherightdirectorysothe
information is available to the HOST. Refer to the HOST’s manual for guidance.
Foracycliccommunicationseveralcongurationtoolscanbeused.Eachcommunicationtool
requires its own device driver. We currently support only Siemens Simatic PDM and Yokogawa
FieldMate. All parameter lists and methods described in this manual are based on this acyclic
communication tool. Please make sure the device driver is in the proper directory. Most HOST
systemscomewithan“installdevicedriver”packagewhichplacesallrequiredlesinthe
designated folders.
3.3 Bus Power ON
Using the host device display function, check that the FLXA21 is in operation on the bus.
Unlessotherwisespecied,thefollowingsettingsareineffectwhenshippedfromthefactory.
If no FLXA21 is detected, check the available address. Please set all addresses of the devices in
advance or separately connect each FLXA21 and set a different address for each. Make sure to
note the address after changing it as from this point on the device can only be accessed through
this address.
3.4 Bus Address Setup
This section describes the procedure to set Bus Address in the transmitter. Every device in
PROFIBUSPAmustbeassignedauniqueaddressintherangeof0(0x00)to126(0x7e).Ifitis
notspeciedatthetimeoforder,126(0x7e)isthefactorydefault.Donotchangeto0,1or2as
these are used by master devices.
You can change the bus address using a communication tool (e.g., PROFI captain). For details,
see the instruction manual for the communication tool.

<3. Getting Started> 3-3
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
3.5 Notes When Using the FLXA21-SC
Concentration Table (when using FieldMate)
TheFLXA21-SCconcentrationtablecanbereadfromandwrittentousingtheCONC_TABLE_
CONCENTRATION_1toCONC_TABLE_CONCENTRATION_21andCONC_TABLE_
CONDUCTIVITY_1toCONC_TABLE_CONDUCTIVITY_21parametersofthetransducerblock.
However, when using FieldMate, note the following points.
Thedefaultconcentrationtablevaluesare“NotaNumber”.Onthedevicescreen,theyappearas
blank.OnFieldMate,“IEEE:NOTANUMBER”isdisplayed.
Valuessetto“NotaNumber”cannotbechangedfromFieldMate.
IfyouwanttowritetheconcentrationtablefromFieldMate,rstsetalltheitemsinthe
concentration table to some value from the device screen.
3.6 PRIMARY/SECONDARY/TERTIARY/
QUATERNARY_VALUE Value Assignment
MeasurementvaluesareassignedtoPRIMARY_VALUE,SECONDARY_VALUE,TERTIARY_
VALUE,andQUATERNARY_VALUEfromthedevicescreen.
TosetPRIMARY_VALUE,chooseCommissioning>Outputsetup>Output,andthensetthe
Process parameter item on the mA (Output) screen.
Forothers,chooseCommissioning>Advancedsetup>Communication>HART,andonthe
HARTsetupscreen,setSECONDARY_VALUEwiththeSVitem,TERTIARY_VALUEwiththe
TVitem,andQUATERNARY_VALUEwiththeQVitem.
CAUTION
Be sure to use the default values for the following settings.
Changing them may disrupt communication.
 Commissioning>Advancedsetup>Communicationscreen
  Defaultvalue: HART
 Commissioning>Advancedsetup>Communication>HARTsetupscreen
  Itemname: Networkaddress
  Defaultvalue: 0
Ifyouwanttochangethesettingsfromthedevice,rstchangeTransducerBlockMode(refer
alsototablesinchapter6becausenotallparametersneedOStoallowachange)toOutof
Service.
Ifyouwanttoloadthefactorysettingsorchangethelanguage,rstchangePhysicalBlockMode
(referalsototablesinchapter6becausenotallparametersneedOStoallowachange)toOutof
Service.
Notethatwhenyoudo,theFLXA21willrestart.

<4. Explanation of Basic Item> 4-1
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
4. Explanation of Basic Item
4.1 Reading cyclic parameters
In general, slave devices exchange data cyclically with the master (class 1, e.g. PLC). The
FLXA21 (slave) gets the data from the sensor, makes some calculations and makes the outcome
available through analog input blocks. The controller device (Master) requests for these process
values, makes some calculation (PID, ratio) and sends the result to an actuator. The FLXA21
contains three analog input blocks and therefore three Process values for cyclic data transfer.
Themasterclass1devicegetstheinformation(oftheFLXA21)byconsultingtheGSDle.A
devicespecicGSDleshouldbeavailableforeachdeviceandshouldhaveanuniqueidentier.
AllinformationnecessaryforcyclicdatatransferisdescribedintheGSDle.Refertothemanual
oftheMasterClass1deviceforthesefolders.Withtheseles,theMasterClass1devicesare
able to start cyclic data transfer.
4.2 IntegrationofGSDleandIDENTNumber
TheGSDleandIDENTNumberarenecessaryforPROFIBUSPAcommunication.Before
startingcommunication,thedevicemustbespeciedbytheGSDleinthehostsystemandthe
IDENTNumberofthedevice.
ThePROFIBUSPAdevicehasaproleIDENTNumberandadevice-specicIDENTNumber.
ThereareGSDleswhichcorrespondtoeachnumber.TheproleGSDleisageneral-purpose
lewhichisdenedbythekindandnumberoffunctionblocksofthedevice.Thislehelps
improve the compatibility among devices.
BysettingthePROFIBUSPAIDENTNumber(IDENT_NUMBER_SELECTOR)parameterofthe
physicalblock,theIDENTNumberwillbelinkedwiththecorrespondingGSDle.
Table4.1 DevicespecicIDGSDle
Model Name DevicespecicIDENTNumber DevicespecicGSDle
FLXA21-PH 0x45D0 YEC45D0.gsd
FLXA21-SC 0x45D1 YEC45D1.gsd
Table4.2 ProleIDGSDle
ProleID ProleIDENTNumber ProleGSDle
Analyzer 0x9750 pa139750.gsd
Beforehandonemustcongurewhichinformationwillbeexchanged.
Therearetwokindsofcongurationspossible.TheIdentierbyte(orshortidentier)andthe
ExtendedIdentierFormat(orlongidentier).TheFLXA21supportsbothkindsofcongurations.
The user can choose either “Analog Input (short)” or “Analog Input (long)” and will end up with the
same result.
ThefunctionblocksoftheFLXA21areinaspecicorder.Thecongurationofthecyclicdata
should be done in the same order.
For the FLXA21. The process values are mapped as follows on default.
FLXA21-PH FLXA21-SC
slot (1) “AI1” pH Conductivity
slot (2) “AI2” Temperature Temperature
slot (3) “AI3” Empty Empty

<4. Explanation of Basic Item> 4-2
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
The AI1/2 measurement items assigned to each slot are determined according to Channel (AI) as
wellasPRIMARY,SECONDARY,TERTIARY,andQUATERNARYType(TransducerBlock).For
details, see the description of each item.
TheGSDleoftheFLXA21species3modules:
;Empty module
Module = “Empty Module” 0x00
1
EndModule
;Modules for Analog Input
Module = “Analog Input (AI)short” 0x94
2
EndModule
;Modules for Analog Input
Module = “Analog Input (AI)long” 0x42,0x84,0x81,0x81
3
EndModule
;---Descriptionofthemoduleassignment:---
;
SlotDenition
Slot(1) = “AI1” 3 1,2,3
Slot(2) = “AI2” 3 1,2,3
Slot(3) = “AI3” 3 1,2,3
Examples:
- ConguringtheoutputoftheAIblock1(pH)andtheoutputofAIblock2(temperature):
“Analog Input (short) “ and “Analog Input (short) “ and “Empty Module” or “0x94, 0x94, 0x00”
- ConguringtheoutputofAIblock1(pH)only:
“Analog Input (long) “ and “Empty module” and “Empty module” or “0x42, 0x84, 0x81, 0x81,
0x00, 0x00”
NOTE
Most Master Class 1 devices have an advanced Human Machine Interface and will guide you
throughthesecongurations.
4.3 Reading acyclic parameters
Communications occur on a peer-to-peer basis. A cyclic communication services for
parameterization, operation, monitoring, alarm/error handling and diagnostics of intelligent
devices may be handled in parallel to cyclic transfer.

<4. Explanation of Basic Item> 4-3
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
4.4 Function Block Parameters
Function block parameters can be read from the host or can be set. For a list of the parameters of
blocksheldbytheFLXA21,referto“3.6PRIMARY/SECONDARY/TERTIARY/QUATERNARY_
VALUE Value Assignment”. The following is a list of important parameters with a guide how to set
them.
nOutline
This chapter describes brief explanation of the AI function block.
nTarget Mode
The Target modes permitted for the AI function block are Automatic (Auto), Manual (Man), and
Out of Service (O/S). When the Target mode of PB (Physical Block) is Out of Service (O/S),
Actual is Out of Service (O/S) even if Automatic (Auto) or Manual (Man) is written to Target.
nActual mode
Many parameters require a change of the mode of the function block to O/S (Out of Service)
when their data is changed. To change the mode of the function block, its Target Mode
(TARGET_MODE)needstobechanged.TheActualMode(MODE_BLK)iscomprisedofthe
threesub-parameters:
(1) Actual(Actualmode):Indicatesthecurrentoperatingcondition.
(2) Permit(Permittedmode):Indicatestheoperatingconditionthattheblockisallowedtotake.
(3) Normal(Normalmode):Indicatestheoperatingconditionthattheblockwillusuallytake.
Thesemodeparameterareveryimportantasitgivesthestateoftheblock.InO/S(Out_Of_
Service) mode the block is out of operation. In this mode it is allowed to update parameters.
Manual mode gives the operator the possibility to manually update a selected number of
parameters (values, scaling e.g.) in order to test the system. In automatic mode the function
block is executed and block parameters are automatically updated.
Under normal operating circumstances, set the Auto mode for normal operation. Auto mode is
the factory default.
NOTE
The actual mode is changed by setting the target mode. When the physical block mode is set to
OOS all function blocks are set to OOS mode.
nCHANNEL
ChannelistheparametertoselectthesignalwhichiscalculatedinSENSORTransducerBlock.
The values are assigned to channels.
For the FLXA21 three or four channels are available.
FortheFLXA21,youcanselectfromthePRIMARY,SECONDARY,TERTIARY,QUATENARY
values assigned to the Transducer Block.
Fordetailsonhowtoassignmeasurementitemstoparameters,referto“3.6 PRIMARY/
SECONDARY/TERTIARY/QUATERNARY_VALUEValueAssignment”.
The following table shows the measurement items that you can select and their default values.

<4. Explanation of Basic Item> 4-4
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
FLXA21-PH
Channel Selectable TB value Default Selectable values
1Primary Value pH1 pH1, Temperature1, ORP1, rH1
2Secondary Value Temperature1 pH1, Temperature1, ORP1, rH1,
Ref. impedance1, Empty
3Tertiary Value PH:Empty
SENCOM:ORP1
4QuaternaryValue Empty
FLXA21-SC
Channel Selectable TB value Default Selectable values
1Primary Value Conduct1-TC1 Conduct1-TC1, Temperature1,
Resist1-TC1, Concent1-TC1,
Conduct1-TC2, Resist1-TC2,
Concent1-TC2
2Secondary Value Temperature1 Conduct1-TC1, Temperature1,
Resist1-TC1, Concent1-TC1,
Conduct1-TC2, Resist1-TC2,
Concent1-TC2, USP1, Empty
3Tertiary Value Empty
4QuaternaryValue Empty
nFail Safe Mode
FailSafeModedenestheOutputValueandStatus(Quality)whenstatusofinputsignaltoAI
function block or Totalizer function block is BAD.
This function is valid only when Actual Mode of AI function block is in “AUTO”
nOutput Value (OUT)
ThefunctionblockparameterOUTcontainsthecurrentmeasurementvalueinavendorspecic
orcongurationadjustedengineeringunitandthebelongingstatusinAutoMode.Alsocontains
the value and status set by an operator in Man Mode.
nSimulation (SIMULATE)
Simulation parameter is to simulation mainly for checking arbitrarily set the value and input status
fromSENSRORTransducerblock.
nPV Scale (PV_SCALE)
Conversion of the process variable into percent using the high and low scale values.
nLinearization type (LIN_TYPE)
Linearization type of output signal can be select from Linear or Square root. Linearization type
of AI function block can apply to have different output mode for display and output signal. (For
example,Displaymode:Squareroot,Outputmode:Linear)
nOut Scale (OUT_SCALE)
Scale of the process variable. This parameter contains the values of the lower limit and upper
limit effective range, the code number of the engineering unit of process variable and the useful
number of digits on the right hand side of the decimal point.
nFilter Time Const (PV_FTIME)
Damping time of the process variable.