thermoprozess MIKROTHERM 825 User manual

MIKROTHERM®825
MT825-A,
Communications
MT825A/C11/09 Rev.3/Soft.4
THERMOPROZESS s.r.o.
Riegrova2668/6c
370 01 eskéBudějovice
tel.:[phone]
fax:[phone]
e-mail: [e-mail]
internet: www.thermoprozess.cz
THERMOPROZESS

Communications
2
1Scopeofcommunications
Communicationlineenhancesusabilityofthecontrollerfromautonomouscontrollertothe
onewhichperformsthetasksinasystem. Basicfeasibilitiesaredescribedinthe5following
articles:
•Readingdatafromthecontroller, Prot = Mod. Enablestoacquiredata(SPvalues,
process values, ..)forPC, theirvisualdataprocessingandstoring. Theformforshowing
andpresentingdependsonthefeatures ofthevisualprogramused.
•Configurationofcontroller, Prot = Mod.IngraphicenvironmentofPCyoucan
easilyconfigureandsetparametersthataretransferredtoPCbyonecommand. The
configurationviaPCcanbeusedforexampleformoresophisticatedsettingofcontrollers
orforsettingofproductionlinebythetechnologyproceduresstoredinPC.
•ThecontrollersconfiguredinsystemMaster–Slave, Prot = SGnL.Thecontroller
MT825A-MASTERretransmitssetpointvalueandtheSLAVE -controllers(MT600)
receivethisvalueandprocess it. IncomparisonwithanalogretransmittheMASTER-
SLAVE systemhastheadvantageingalvanicisolationofcontrollersandtheprecisionof
transferringofSTPvaluein1decimalpoint.
•Cascadecontrolling, Prot = SGnL. Usedinprocess withlonglagtimesbetweenthe
energysource andprocess measuredvalue.
•Printingprotocolsofmeasurement, Prot = Prnt. Time, process andsetpointvalues
areshownonaprintedcopy, theformatisillustratedbelow.
************************
DATE: 20.08.1999
************************
time: sp: c:
15:47 852 850
15:57 860 859
16:07 868 868
16:17 876 877
16:27 884 884
16:37 892 892
16:47 900 901
16:57 900 900
17:07 oFF 889
17:17 oFF 852

Communications
3
2Communication interfaces
Thecontrollerscanbeequippedwithcommunicationinterface RS232 or EIA485.
Thebaudrateofthecommunicationispermanentlysetat9600 Bd,thedatabitsis8,
noparity, 1stopbit.
2.1Interface RS 232
Theinterface RS232 isintendedforthelink of1PCwith1controller. Maximumnetwork
lengthcanbe12 meters.ThewiringofstandardconnectorsDB-9andDB-25 onthesideof
PCisillustratedinthefollowing picture.
2.2Interface EIA485
Theinterface EIA485 issuitableforindustrialenvironment.Thelocalnetworkwiththis
interface canlink asmanyas32 controllerswithPCup tothedistance 1200 meters. When
repeatersareusedmorecontrollerscanbelinkedatlongerdistance. Inbasicwiring there
mustbeanappropriateconverterorPCcardfortransferringofinterface RS232 toEIA485 at
thesideofPC.
Ifcontrollersworkintheenvironmentwithlowinterference, thecommunicationlinecanbe
carriedoutwithtwistedpaircable. Thesimplestwiringofcommunicationlineillustrates the
followingpicture.
RS232
EIA485
Sideofcontroller
SideofPC

Communications
4
3Protocol MODBUS
ThecommunicationprotocolMODBUSisintendedforcreatingnetworks oftype„Master–
Slave“, when„Master“isPC, „Slave“arealwayscontrollers. Itscharacteristicissimple, but
reliablestructurewiththesefeatures:
•Definedlengthoftransmittedcommands.
•Identificationoftheterminalequipmentwiththeaddress (forMT825address 1to250).
•Thebackconfirmationofeachcommand.
•ThereportissecuredwithCRC code.
•Thetransferoferrorreports.
3.1Generalstructureofprotocol
Address of
controller Command
Address of registerand/ordata CRC
1byte 1byte nbytes 2bytes
ThecommandsforMT825:
•Read –03Hor04H
•Write to1register–06H
•Backinquiry –08H
3.2Operation-read
Thisoperationenablesreadingasmanyas32 registersinarowoneafteranother.Ifregisteris
notdefinedthecontrollerreturns thevalue–32000, iftheregisterisnotactive
thecontrollerreturnsthevalue–32001.
Command:
Address of
controller 03H Address of 1.readregister Numberof readregisters CRC
1byte 1byte
2bytes(1. bytehigher) 2 bytes(1. bytehigher) 2 bytes
Response:
Address of
controller 03H Numberof bytes 1.readregister … Thelastreadregister CRC
1byte 1byte 1byte 2bytes(1. byte
higher) 2 bytes(1. bytehigher) 2 bytes
Example:readingofregister100(64H,setpointvalue), controller
attheaddress 12(0CH)
Command: 0C 03 00 64 00 01 C4 C8
Response: 0C 03 02 01 C8 95 83

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5
3.3Operation-write (06H)
Thisoperationenableswritingavalueto1registerofcontroller:
Command:
Address of
controller 06H Address of register Data CRC
1byte 1byte 2bytes(1. bytehigher) 2 bytes(1. bytehigher) 2 bytes
Responseifthecommand isperformed(isidenticalwiththecommand):
Address of
controller06H Address of register Data CRC
1byte 1byte 2bytes(1. bytehigher) 2 bytes(1. bytehigher) 2 bytes
Example:writingtoregister100 (64H,setpointvalue), controllerattheaddress
12 (0CH)
Command: 0C 06 00 64 01 C8 C9 0E
Response: 0C 06 00 64 01 C8 C9 0E
Response, errorreport:
Address of
controller Command+ 80H Errorreports CRC
1byte 1byte 1byte 2bytes
Errorreports:
•01 –errorofcommandentered,errorinCRC.
•02 –registerdoesnotexistorisintendedonlyforreading.
•03 –dataarebeyondthelimits.
•04 –writingtoregisterfailed(e.g. errorofhardware,too highinterference …)
Example:erroroftheregisterentered
Command: 0C 01 00 64 04 20 7F D0
Response: 0C 81 01 10 53
Example:error, theregisterdoesnotexist
Command: 0C 06 00 69 04 20 5B D3
Response: 0C 86 02 52 62
Example:error, databeyondthelimits
Command: 0C 06 00 64 4E 20 FD 70
Response: 0C 86 03 93 A2
3.4Operation-backinquiry:
Thisoperationisonlyintendedforthedetectionofthecontrollerattherelevantaddress.

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6
Command:
Address of
controller 08H Data CRC
1byte 1byte 4bytes2bytes
Response:
Address of
controller 08H Data CRC
1byte 1byte 4bytes 2bytes
Example:back inquiry, controllerattheaddress 12 (0CH)
Command: 0C 08 0A 14 1E 28 AB 74
Response: 0C 08 0A 14 1E 28 AB 74
3.5Timingofcommunicationline
Ifthereismorethan1controllerontheline(onlylineEIA485)itisnecessarytoobservethe
timing showninthefollowingpicture.
Thetime interval (pausebetweenending ofreceiving andtransmittingofanothercommand)
mustbe moreorequalto 50ms. Inoppositecasethedatacollisionmightappear.
time
Transmitting
command Receiving
response
Transmitting of
another
command
Receiving
response
Interval >= 50 ms

Communications
7
4Overviewofregisters
Thetablecomprisesthetotaloverviewofregisters thatareaccessibleforcommunicationline.
Themeaning ofparticularparametersisthefollowing:
•Display …ifyousettherelevantparameterviakeyboard, onlowerdisplayappears
writingstatedinthecolumndisplay.
•Address …address ofregister.Theaccess forregisterisshownaftertheaddress,
r…readonly, r/w…readaswellaswrite.
•Range …rangeofregistervalues.
•Initiation …initialvalueatfirstpower-up orafterrestart.
•Decimalpoint …determinesthenumberofdecimalpointsthataretobedisplayed.
Theconversionshowsthefollowing table.
Decimal point Valueenteredwith
communicationline Displayreading Note
0 1800 Factorysetting,nodecimalpoint
1 180.0 Factorysetting,1decimalpoint
2 18.00 Factorysetting,2decimalpoint
dEC1 (0) 180 Bypar. dEC1 (nodec. point),inputtc, rtd
dEC1 (1) 1800 180.0 Bypar. dEC1 (1 dec. point),inputtc,rtd
dEC1 (0) 180 Bypar. dEC1 (nodec. point),inputprocess
dEC1 (1) 18.0 Bypar. dEC1 (1 dec. point),inputprocess
dEC1 (2) 1.80 Bypar. dEC1 (2 dec. points),inputprocess
dEC1 (3) 0.180 Bypar. dEC1 (3 dec. points),inputprocess
•Note …themeaning ofregisterismostlystated
Systemregisters
Display
Address Range Initiation Dec. point
Note
SoFt 0r Softwareversion
1r 0…2kB
1…32kB EmbeddedmemoryRAM for
datalogger
2r 0…tc
1…rtd
2…proc
Measuring input
3r 0…none
1…retransmit
2…communication
Controlinput,output
4r 0…SSD
1…relay
2…process
Controloutput
5r 0…none
1…relay Alarm/signaloutput
6r 0…none
1…1relay
2…2relay
3…3relay
Eventoutput

Communications
8
Display
Address Range Initiation Dec. point
Note
Aut 12 r/w 0… oFF
1… on 0 Start on,stopoFF
automaticsettingof PID
parameters
50 r Process value
upper display dEC1 Ifsensorisnotset,thecontroller
returnsthevalue–22000.
Ifthebadsensorisdetected
thecontrollerreturnsthevalue–
22001.
51 r Ambienttemperature 1 Thecontrollerreturnsonly
process/measuredvaluefor
thermocoupleinput
60 r Actualsetpointvalue
lower display dEC1 IfSP valueisOFF oFF,
thecontrollerreturnsthevalue-
22000
70 r PIDcontrolling:
0to1000
ON/OFF controlling:
0…switchedOFF
1…switchedON
1 Controloutput.
Powerat%forPIDcontrolling
Stateof theoutputforON/OFF
controlling
71 r 0…switchedOFF
1…switchedON Alarm/signaloutput
72 r 0…switchedOFF
1…switchedON Eventoutput1
73 r 0…switchedOFF
1…switchedON Eventoutput2
74 r 0…switchedOFF
1…switchedON Eventoutput3
80 r 0to9999 0 Totaltimeof thecontroloutput
inhours.
81 r 0to9999 0 Totalconsumptionof energy
inkWh. Afterreaching 9999 the
counterisresetandstartsfrom0.
82 r 0to9999 0 TotalconsumptioninkWhfor1
firing.Whenprogramisreleased
thecounterisresetandcounting
oftheconsumptionstartsfrom0.

Communications
9
Operationlevel
Display
Address Range Initiation Dec. point
Note
100 r/w SP1L to SP1h Setpointvalue,readingappears
onlowerdisplay
Pb1 110 r/w 10 to24990 200 dEC1 Proportionalband
It1 111 r/w 0to999
0… oFF 100 1 Integrativevalue
dE1 112 r/w 0to999
0… oFF 24 2 Derivativevalue
Pb2 113 r/w 10 to24990 200 dEC1 Proportionalband
It2 114 r/w 0to999
0… oFF 100 1 Integrativevalue
dE2 115 r/w 0to999
0… oFF 24 2 Derivativevalue
Ct1 116 r/w 1to250for ot1 =
ht, Cl
5to250for ot1 =
ht2, Cl2
1
15
0 Timecycle
hYS1 117 r/w 10 to2490 20 dEC1 Hysteresisforswitching
ON/OFF of thecontroloutput
CAL1 120 r/w -9990 to9990 0 dEC1 Calibrationof measuring input
o2Lo 130 r/w -4990 to o2hI for ALPr,
SGPr
-9990 to0pro AldE,
SGdE
-4990
-990
dEC1 Lowalarm/signalsetpoints
o2hI 131 r/w o2Lo to24990pro
AlPr, SGPr
0to9990pro AldE,
SGdE
24990
990 dEC1 Highalarm/signalsetpoints
hPEr 140 r/w 1…120 10 0 Periodof datastoringinminutes
hSto 141 r/w 0… oFF
1… ProG
2… AlSG
3… Cont
1 Conditionfordatastoring
PPEr 142 r/w 1to120 10 0 Periodforprintingprotocolon
theprinterinminutes
PSto 143 r/w 0… oFF
1… ProG
2… AlSG
3… Cont
1 Conditionforprinting

Communications
10
Configuration level
Display
Address Range Initiation Dec. point
Note
In1 200 r/w Thermocoupleinput:
0… no
1… J
2… K
3… t
4… n
5… E
6… r
7… S
8… b
9… C
10 … d
RTDinput:
0… no
1… rtd
Process input:
0… no
1… 0-20
2… 4-20
3… 0-5
4… 1-5
5… 0-10
0 Settingof theinputsensor
dEC1 201 r/w tcandrtdinput:
0… 0
1… 0.0
Process input
0… 0
1… 0.0
2… 0.00
rL1 202 r/w -4990 to rh1 -4990 dEC1 Lowrangeof process input
rh1 203 r/w RL1 to24990 24990 dEC1 Highrangeof process input
Ftr1 204 r/w 0to600
0… oFF 10 1 Inputfilter
ot1 210 r/w 0… ht
1… CL
2… ht2
3… CL2
0forSSD
andproc
2prorelay
Settingof thecontroloutput
PLd1 211 r/w 0to100 100 0 Outputpowerlimitbelow SPL1
SPL1 212 r/w -4990 to24990 250 dEC1 SP valueforpowerlimitfunction
PLu1 213 r/w 0to100 100 0 Outputpowerlimitabove SPL1

Communications
11
Display
Address Range Initiation Dec. point
Note
ot2 220 r/w 0… no
1… ALPr
2… AldE
3… SGPr
4… SGdE
0 Settingof alarm/signaloutput
Lat2 221 r/w 0… oFF
1… on 0 Latchingof alarm/signaling
SIL2 222 r/w 0… oFF
1… on 0 Silencing of alarm/signaling
o2Sd 223 r/w 0… LohI
1… hI
2… Lo
0 Activelimitsforalarm/
signaling
hYS2 224 r/w 10 to2490 20 dEC1 Hysteresisofswitchingforalarm
/signaloutput
SP1L 240 r/w -4990 to SP1h 0 dEC1 Thelimitof lowrangeforSP
SP1h 241 r/w SP1L to24990 1000 dEC1 Thelimitof highrangeforSP
SLEP 242 r/w 0… oFF
1… SP 0 Thestateof thecontroller,
iftheprogramdoesnotrun
GSD 250 r/w 10 to9990 100 dEC1 Guaranteedsoakdeviation
tCon 251 r/w 0to999
0… oFF 0 0 Maximumdurationof the
interruptioninminutesfor
continuing inprogram
Pout 252 r/w 0… Cont
1… hoLd
2… Abrt
0 Responsetothesupplyvoltage
interruption.Ittakeseffectafter
theduration Tcon elapsed.
Strt 253 r/w 0… ProG
1… PrSt 0 Settingof options
forstartingaprogram
StoP 254 r/w 0… C E
1… Ch E
2… C AE
3… ChAE
Settingof optionsforendingup
orinterruptingaprogram
tdEL 255 r/w 1to99 10 Timedelayforautomaticstart-up
ofprograminminutes
PoW 260 r/w 0to9990 0 1 Powerof systeminkWh
ALGo 261 r/w 0… PID
1… PID2 0 Alghoritmusof PIDcontrolling
PID2 262 r/w -4990 to24990 250 dEC1 ThelimitbetweenPID1and
PID2
AtSP 263 r/w 0to100 75 0 Helpingauto/tunesetpointvalue
forautotunningin%
ArEt 264 r/w 0… oFF
1… on 1 Automaticreturn fromopen
menu

Communications
12
Display
Address Range Initiation Dec. point
Note
StP1 270 r/w 0… no
1… hISt
2… run
3… CLK
4… PCnt
5… Ptot
6… PPGM
7… o2oF
8… Ent1
9… Ent2
10 … Ent3
11 … Aut
12 … CAL1
13 … hPEr
14 … hSto
15 … PPEr
16 … PSto
1 1st positionof usermenu
StP2 271 r/w Thesameas StP1 2 2nd positionof usermenu
StP3 272 r/w Thesameas StP1 0 3rd positionof usermenu
StP4 273 r/w Thesameas StP1 0 4th positionof usermenu
StP5 274 r/w Thesameas StP1 0 5th positionof usermenu
StP6 275 r/w Thesameas StP1 0 6th positionof usermenu
StP7 276 r/w Thesameas StP1 0 7th positionof usermenu
StP8 277 r/w Thesameas StP1 0 8th positionof usermenu
SP1 280 r/w 0… oFF
1… on 0 ThelockforsetpointvalueSP1
ProF 281 r/w 0… oFF
1… on 0 Thelockformenu ProF in
operationlevel
PCPY 282 r/w 0… oFF
1… on 0 Thelockformenu PCPY in
operationlevel
GLbL 283 r/w 0… oFF
1… on 0 Thelockformenu GLbL in
operationlevel
out1 284 r/w 0… oFF
1… on 0 Thelockformenuot1 in
operationlevel
out2 285 r/w 0… oFF
1… on 0 Thelockformenuot2 in
operationlevel
Set 286 r/w 0… oFF
1… on 0 Thelockforconfigurationlevel
PASS 287 r/w 0to9999 1000 0 Thepasswordfortheentryto
configurationlevel

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13
Extendedconfigurationmenu
Display
Address Range Initiation Dec. point
Note
ot3 300 r/w 0… Ent1
1… ALPr
2… SGPr
3… SGA
4… SGb
0 Settingof thefunctionfor
theoutput3
IEt1 301 r/w 0… hold
1… oFF
2… on
0 Stateof theeventoutput1when
aprogram isinterrupted
o3hI 302 r/w -4990 to24990 24990 dEC1 Highlimitforalarm/signaling
tSG3 303 r/w 1to200 10 0 Settingof timeof signalingat
theendof program
ot4 310 r/w 0… Ent2
1… ALPr
2… SGPr
3… SGA
4… SGb
0 Settingof thefunctionfor
theoutput4
IEt2 311 r/w 0… hold
1… oFF
2… on
0 Stateof theeventoutput2
whenaprogramisinterrupted
o4hI 312 r/w -4990 to24990 24990 dEC1 Highlimitforalarm/signaling
tSG4 313 r/w 1to200 10 0 Settingof timeof signalingat
theendof program
ot5 320 r/w 0… Ent3
1… ALPr
2… SGPr
3… SGA
4… SGb
0 Settingof thefunctionfor
theoutput5
IEt3 321 r/w 0… hold
1… oFF
2… on
0 Stateof theeventoutput3
whenaprogramisinterrupted
o5hI 322 r/w -4990 to24990 24990 dEC1 Highlimitforalarm/signaling
tSG5 323 r/w 1to200 10 0 Settingof timeof signalingat
theendof program
dt 330 r/w 10 to1000 23 1 Characterof derivativefactor
ProG 340 r/w 0… oFF
1… on 0 Thelockforeditingaprogram

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14
Editingaprogram
Display
Address Range Initiation Dec. point
Note
Prog 1400 r/w 1to30 1 0 Programforediting
StEP 1401 r/w 1to15 1 0 Steptobeedited
tyPE 1410 r/w 0… End
1… StPt
2… rAtE
3… SoAK
4… JuMP
0 Typeofstep
SP 1411 r/w -4990 to24990 250 dEC1 Setpointvalue
tI 1412 r/w 0to5999 10 0 Timeof stepinminutes
rt 1413 r/w 10 to30000 1000 dEC1 Ramprateup/downinK/hour
JP 1414 r/w 1to34 1 0 Jump, numberof program
JS 1415 r/w 1to15 1 0 Jump, numberof step
E1 1416 r/w 0… oFF
1… on 0 Theeventoutput1
E2 1417 r/w 0… oFF
1… on 0 Theeventoutput2
E3 1418 r/w 0… oFF
1… on 0 Theeventoutput3
Gd 1419 r/w 0… oFF
1… on
2… Strt
1 Guaranteedsoakdeviation
Iftheparametersofthesameprogramandstepareeditedcurrentlyfromthekeyboardaswell
asfromcommunicationline, thevaluestransferredfromcommunicationarenotaccepted.
Starting,holding, interruptingaprogram
Display
Address Range Initiation Dec. point
Note
ProG 1200 r/w 1to34 1 0 Programyouwish
StEP 1201 r/w 1to15 1 0 Stepyouwish
1210 r/w 0…noaction
1…startof program 0 Executivecommand.Program
andsteparedefinedatthe
address 1200and 1201
End 1211 r/w 0…noaction
1…interruptionof
program
0 Executivecommand
hoLd 1212 r/w 0…noaction
1…state-hold 0 Executivecommand
Abrt 1213 r/w 0…noaction
1…state-abort 0 Executivecommand
Cont 1214 r/w 0…noaction
1…programcontinues 0 Executivecommand

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15
Starting aprogrambytheinternalclock
Display
Address Range Initiation Dec. point
Note
PCLK 1220 r/w 0to34
0… oFF 0 0 Setnumberof programyouwish
tostartup
SCLK 1221 r/w 1to15 1 0 Setstepfromwhichyouliketo
start
Mon 1222 r/w 0to12
0… oFF 0 0 Month
dAY 1223 r/w 1to31 1 0 Day
hour 1224 r/w 0to23 0 0 Hour
Min 1225 r/w 0to59 0 0 Minute
Editingofthestateofthecontroller
Display
Address Range Initiation Dec. point
Note
1250 r 0…theprogram
doesnotrun
1…programruns
2…state-hold
3…state-abort
Stateof thecontroller
ProG 1251 r 1to34 Actualprogramthatruns
StEP 1252 r 1to15 Actualstepthatruns
EnSP 1253 r Finalsetpointvalue
trEM 1254 r Timetotheendof step,hours
trEM 1255 r Timetotheendof step,minutes
How tosetthetimeclock
Display
Address Range Initiation Dec. point
Note
YEAr 500 r/w 0to99 0 0 Year
Mon 501 r/w 1to12 1 0 Month
DAY 502 r/w 1to31 1 0 Day
hour 503 r/w 0to23 0 0 Hour
MIn 504 r/w 0to59 0 0 Minute

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16
Readingofmeasuredvalues,deletingmemory
Display
Address Range Initiation Dec. point
Note
1300 r/w 0to199proRAM 2kB
0to4999proRAM 32kB
0 0 Settingof positionforreading
data.0setsthenewestvalue,
199/4999setstheoldestone
1301 r dEC1 Process valueattheposition
definedbytheaddress 1300.
Ifsensorisnotset,controller
returnsthevalue–22000. Ifthere
isaerrorinsensor, controller
returnsthevalue–22001.
1302 r 1to12 0 Month,positionattheaddress
1300
1303 r 1to31 0 Day, positionattheaddress 1300
1304 r 0to23 0 Hour,positionattheaddress
1300
1305 r 0to59 0 Minute,positionattheaddress
1300
1330 r/w 0…noaction
1…deletingof memory 0 Deleting datainthememoryof
thecontroller

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17
5Index
1Scopeofcommunications........................................................................................................................2
2Communicationinterfaces.......................................................................................................................3
2.1 Interface RS232.............................................................................................................................3
2.2 Interface EIA485...........................................................................................................................3
3ProtocolMODBUS.................................................................................................................................4
3.1 Generalstructureof protocol...........................................................................................................4
3.2 Operation-reading.........................................................................................................................4
3.3 Operation-writing(06H)...............................................................................................................5
3.4 Operation-backinquiry:................................................................................................................5
3.5 Timingof communicationline........................................................................................................6
4Overviewof registers...............................................................................................................................7
Systemregisters.......................................................................................................................................7
Operationlevel........................................................................................................................................9
Configurationlevel................................................................................................................................10
Extendedconfigurationmenu................................................................................................................13
Editingaprogram..................................................................................................................................14
Starting,holding,interruptingaprogram................................................................................................14
Startingaprogrambytheinternalclock.................................................................................................15
Editingof thestateof thecontroller.......................................................................................................15
Howtosetthetimeclock.......................................................................................................................15
Readingof measuredvalues,deletingmemory.......................................................................................16
5Index.....................................................................................................................................................17