Nokeval 575F-2071 User manual

1
Manual
Model 575F-2071, 1000F-2071,
1100F-2071 and 1800X-2071
Serial input RS232 / RS485
No 290507
Nokeval

2
Manufacturer:
Nokeval Oy
Yrittäjäkatu 12
FIN-37100 NOKIA
Tel. [phone]
Fax. [phone]
Contents
General Description .....................................................................................................3
Technical specifications ...............................................................................................3
Front panel.....................................................................................................................4
Configuration stage ......................................................................................................4
Resetting configuration parameters ............................................................................................. 4
Casedimensions: ........................................................................................................................... 4
Configuration.................................................................................................................5
Serial protocol (SCL).....................................................................................................6
Counting check sum....................................................................................................................... 6
Example of control message without BCC ................................................................................... 6
XOR-function without calculator ................................................................................................... 7
Non-addressable ASCII protocol..................................................................................7
Display modes ...............................................................................................................7
TEXT Mode...................................................................................................................................... 7
NUMERICALMode .......................................................................................................................... 7
Interpretation .................................................................................................................................. 8
Displaying ....................................................................................................................................... 8
Reading front panel keys..............................................................................................8
Buffered method............................................................................................................................. 8
Unbuffered method ........................................................................................................................ 8
Terminal Connections...................................................................................................9
Field display construction ..........................................................................................10
Modular indicator serie 2000 ...................................................................................... 11

3
Input: serial signal RS-485 and RS-232,
selection with terminal connections, galvanically
isolated
Max. distancies: 1000 m with RS-485
20 m with RS-232
Number of meters in one loop: 1with RS-232; 1-31
with RS-485
Data 8 characters, 1 stop, no parity
Addresses: 0...99
Baud rate: 300, 600, 1200, 2400, 4800, 9600
and 19200 baud
General:
Configuration keys and a minidisplay inside the
case
Operating temp. -35..+50 °C
Terminals removable, wire 2,5 mm²
Power supply 85..240 VAC or 24 VDC ±15%
Case protection IP65
Weight 575F: 3 kg, 1000F: 5 kg, 1100F: 8 kg,
1800F:18 kg
Readabilityofdisplays:
Digit size 57 mm 20..30 metres
100 mm 40..50 metres
180 mm ca. 100 metres
How to order: 1100F5-2071-230VAC
Type
Number of digits
Input card
Power supply
85-240VAC
or 24 VDC
General Description
The large field display series 2071 for serial
communication is designed for applications where a
readability of 20 to 100 metres is required. Configuration
is easy with keys and a 6-digit minidisplay inside the
case.
The displays use the simple Nokeval SCL protocol where
only the address, value and check sum are sent. The
displays come standard with both the serial inputs RS-
232 and RS-485. The serial bus is galvanically isolated
from the processor and the power supply. In the
configuration mode you can set the address, baud rate
and the type of number value that you want to appear on
the display after power connection.
In industrial environments use of the addressable serial
signal RS-485 is always recommended. 31 displays
can be connected to one bus and by using a serial data
converter (721R), another 31 displays can be added on.
The maximum distance of the bus is 1 km. Serial input
RS-232 only accepts one display connected to the bus
the maximum distance being 15 m.
The displays can also be used outdoors if exposure to
direct sun light is prevented by using a sun cover. Case
protection is IP65.
Types:
575F5-2071 Digit height 57 mm, 5 digits, red LED
Dark grey plastic enclosure
1000F4-2071 Digit height100 mm, 4 digits, red
Black steel enclosure
1100F6-2071 Digit height 100 mm, 6 digits, red
Black steel enclosure
1800Fx-2071 Digit height 180 mm, 1-5 digits, red
Black steel enclosure
Model XX-2071 for serial data
Technical specifications:

4
Movingintoselected
menu title.
*
5620.0
Front panel
Arrow-buttons(▲▼) are used to change
numerical values and when moving in menu-
structure.
Star-key (★) accepts selected function (enter).
User controllable indicators.
Conf-LED
Unit is in configuration mode
Configuration stage
Configurationcanbestartedbypressingandholding
★- and ▲-keys simultaneously for 2 seconds.
Specified instructions on pages 6-7 Configuration.
Resetting configuration parameters
Some times it is necessary to return indicator
parameters to factory defaults, e.g. if secret access
code is missed. Resetting can be done by pressing
and holding ★- and ➤-keys simultaneously for 2
secondswhenconnectingsupplyvoltage.Prosedure
will reset all settings to factory defaults.
Dimensions:
Dimensions shown in the order:
575F, 1000F, 1100F, 1800F
281, 455, 625, 1025
281, 500, 670 1045
13,188,250, 375
118,147, 210, 330
301, 482, 650, 1030
96,120,
130, 210
Glands: 2 x PG 13

5
Configuration
Beginning:
Configurationcanbestartedbypressingandholding
★- and ▲-keys simultaneously for 2 seconds. Arrow
keys▲▼ movesupanddowninmainmenu.Desired
diSPL
SAVE
UnDo
+
*
INTENS
DEFDIS
BR 15
ID
DOT
BLANC
*
PROTOC
BAUD
SCL
300
ADDR
0
BCC
*
*
**
*
ON / OFF
MODE
DEC
TEXT
NUM
*
*
1
RESP
DELIM
ON / OFF
13
FIRST
0
COUNT
12
TOUT
0
Serial
*
Intens: Display brightness 0..15, brightest 15,
default 7
DefDis: Display after connecting power:
ID = Display address
Dot = Dot in display
Blanc= Empty display
Mode: Text = Text mode
Num = Numerical mode
DEC: The max number of decimals 0..5
(Num mode only)
Protoc: Message protocol, addressable SCL or non-
addressable ASCII
Baud: Baud rate selection: 300, 600, 1200,
2400, 4800, 9600, 19200
Addr: Serial address 0..127 (SCL only)
Bcc: Checksum selection
ON =used (SCL only)
Resp: Responce message select:
ON = used, Switch off if several units are
controlled under same address (SCL only)
Delim: ASCII value of delimiter character between
messages (<CR>=13) (ASCII only)
First: Number of characters to ignore at star of
message, 0 = not used (ASCII only)
Count: Max number of characters processed on the
message 1..12, (ASCII only)
Tout: 0..15 sec, The time after which the display is
cleared when no messages are sent
(0 = not used).
Accept changes and exit from
configuration mode
Undo changes and exit from
configuration mode
function is selected with ➤-key. Save mode can be
selected directly by pushing ★-key in main menu.

6
Serial protocol (SCL)
General
Port settings
Baud rate: 300, 1200, 2400, 4800, 9600 or 19200.
8 data bits, none parity, 1 stop bit.
Protocols
Two different serial protocols may be used to control
X-2071. The protocol is selected in the configuraton
menu. It can be either Nokeval SCL or Ascii. In Ascii
protocol, there is no address involved, so every
display in the bus will show the same display. These
protocols are introduced in the next chapters.
SCL protocol
The SCL message consists of the actual command
supplemented with some control bytes that are
necessary to address the message to the correct
device and to detect transmission errors.
Commands for 2071
Tocontrolthedisplay,useDISPcommand(useupper
case):
DISP 123456
Afterthiscommand,the display willread123456.See
more on chapter Display modes.
To control the alarm indicators A1..M2 at the front
panel, use LED command:
LED 00011X
This command will switch the three leftmost leds off
(0), light up the two next leds (1), and blink the sixth
led (X). The Conf led is not user controllable.
To read the four front panel keys, use KEYB com-
mand:
KEYB
Aboutthiscommand,seechapterReadingfrontpanel
keys.
Control bytes
The general format of SCL command packet is:
<ID>command<ETX><BCC>
The first byte sent (ID) has two purposes: it selects
the device to which the command is intended, and
indicatesthata completelynewcommandisto come.
The byte is calculated by adding 128 (or 80h in
hexadecimal representation) to the address of the
device to be controlled, that is, the most significant
bitis set. Ifyouwant tocommandadevice inaddress
4, the <ID> byte will be 132 (or 84h). This is a single
byte whose value is 132, do not send individual
numbers 1, 3 and 2!
The command is one of the commands explained
previously (e.g. DISP 28.5).
ETX character means End of Transmission. It
terminatesthe command.Itis asinglebyte with Ascii
value 3 (03h).
BCC is a checksum. The sender calculates it from
the command and ETX bytes using XOR operation.
Theid characterisnot involvedinBCC calculation.If
you do not want to send checksum, you must switch
it off in the 2071 menu (set BCC OFF). It is
recommended to use checksum, but sometimes it is
not possible calculate it.
An example of a complete command packet (both
characters and their Ascii values in hex shown):
<80h> D I S P 0 <ETX><BCC>
80 44x49x53x50x20x30x 03 = 1D
The x represents XOR operation in BCC calculation.
Response
2071 will respond to the command using SCL
protocol. The response message is in the following
form:
<ACK>response<ETX><BCC>
Instead, if there was errors in the transmission or in
the command, the response will be:
<NAK>errorcode<ETX><BCC>
ACK is a single byte with Ascii value 6 (06h). It
indicatesthatthe devicehasacceptedthecommand.
About ETX byte, see previous chapter.
Theresponse isdependenton thecommandsent.
X-2071 has empty response except for KEYB com-
mand.
BCC is calculated similarly with the command BCC,
takingall thebytes fromACK toETX. Thistime2071
willcalculate the checksum,andyour task istocheck
it if you want to.
Errorresponse starterNAKis asinglebyte withAscii
value 21 (15h). It is followed by a single number
representing the type of error. 3 means BCC error,
while 4 indicates non-recognized command.

7
Non-addressable ASCII protocol
When using non-addressable ASCII protocol, the
messagesenttoX-2071consistsofthetexttodisplay
only, with no addresses, checksums etc.
However, there has to be a terminating character at
theendofthemessagesothatdistinctmessagescan
beseparatedfromeachother.Mostoftenthisdelimiter
isanewlinecharacter<CR>or<CR><LF>.Theascii
value of that character is selected at the conf menu
item “Delim”. Ascii value of <CR> is 13. When Delim
is set to 13, also <CR><LF> (Ascii 13 and 10) is
interpreted as single character.
Sometimes the message contains additional
charactersthatarenottobedisplayed.Iftheseoccur
beforetheactualmessagetodisplay,theFirstsetting
can be set to match the number of these characters
and they are abandoned. Likewise the number of
characterstodisplaymaybelimitedwithCountsetting
to 1..12.
An example of control message:
ANS_29.4PPP<CR>
Set Delim=13 (<CR>), First=4 (ANS_ is cut off) and
Count=4 (PPP is removed).
The display will be: [29.4 ]
Ifthereisastartcharacterinadditiontotheterminating
character, the start character can be removed by
increasing the First setting by 1. The other way to
handle this is to set the Delim to match the start
characteranduseCountsettingtoindicatetheendof
the message (only if the length of the message is
constant).
Display modes
X-2071 can be used to show short text messages,
but most usually it is used to display measurement
results, that is numerical values. There are two dis-
tinct display modes to choose from.
Generally, when the device that is contolling 2071
has formatted the message keeping in mind there is
a six digit display, the Text mode gives free contol
over the 2071 display. Also Text mode must be
selected in order to display non-numerical text
messages. On the other hand, when displaying
numerical results, the Numerical mode is more
flexible.
TEXT Mode
In the Text mode, X-2071 doesn’t process the mes-
sageinanyway.Thefirstreceivedmessage is placed
atthe leftmost positionofthedisplay andsoon.How-
ever,dot(Ascii 46)andcomma(44)are placedasthe
decimalpoint oftheprevious character, ifapplicable,
thus not taking an display position of their own.
It takes never not more than 12 characters to fill up
the display. This case will occur when each letter is
succeeded with a dot: 1.2.3.4.5.6.
Ifmore charactersaresent that canfiton thedisplay,
the trailing characters are ignored.
Ifthedisplay iswantedtobealigned to theright,there
is no other way than to send a correct number of
spaces (Ascii 32) before the actual characters. The
display can be cleared with a message with only
spaces (1 or more).
X-2071does itsbestto representallAsciicharacters
from 32 to 126 on its display. However, with seven
segmenttechnology thereareseveralcompromises.
E.g. the number 5 and literal S appear equal.
NUMERICAL Mode
In the Num mode, X-2071 tries to interpret the mes-
sageasamathematical figure andthentoreconstruct
itonto thedisplayright-aligned. Thismethodwill give
more acceptable display when the message is not
specifically targeted for a six-digit display.
Interpretation
In the message, the first numerical character (0..9 +
- .) is searched for. This on the characters are
interpreted as a part of a number until first non-
numerical character is encountered. Additionally,
there may be space characters between the sign
(-) and the number itself.
Displaying
The number is formatted on the display right-aligned
and the sign immediately next to the number. The
number of decimals will be the same as in the
incoming message, but it may be limited with Dec
setting in the menu. If the number is too big, the
decimal count is decreased automatically. When
decimalcount isdecreased, X-2071 willkeep round-
ingthe number properly.
If the number is too big to be displayed (e.g. 1 000

8
000),over/underflowcharactersareshown.Ifthenum-
berwasununderstandable(nonumerical characters),
dashesare shown.
Overflow [ ^ ^ ^ ^ ^ ^ ]
Underflow [ _ _ _ _ _ _ ]
Not valid [ - - - - - - ]
Examples
Message Display
_3_ _ _ [ 3 ]
-_ _ 4 . 5 [ - 4.5 ]
66.666 [ 6 6.7 ]
(Dec=1)
999.9999 [ 1 0 0 0.0 0 ]
Reading front panel keys
ThefrontpanelkeysofX-2071canbereadexternally
using serial bus commands. This way 2071 can be
used for controlling other systems.
Reading the keys is possible with SCL protocol only.
Key combinations ▲★ and ▲▼★ cannot be used
beause they activate the configuration state.
2071 is a slave on the bus: it cannot send the key
informationonthebusbyitsown,itmustbeaskenby
a master.
Buffered method
Send command KEYB with no parameters for 2071.
The response consists of a single hexadecimal
character (0…9, A…F, Ascii 48…57, 65…70) and
possibly a letter L (76).
The hex character represents the key status so that
the lowest bit corresponds to the leftmost key (1).
Näppäin Koodi
1 ▲1
2 ▼2
3 ★4
4 ➤8
If several keys are pressed simultaneously, the sum
of these codes is returned. E.g. keys ★and ➤: the
code is 4+8 = C in hexadecimal. When no keys is
pressed, the value is 0 (zero).
ThecodeissucceededwithletterL(e.g.1L),ifthekey
has been held pressed more than 0.5 seconds.
When using KEYB command, 2071 uses a buffer to
storekeypresses (max8presses).Ifa key haspeen
pressed and released before KEYB command is
used,2071willrememberthepressandreturnitwith
thenextKEYBcommand.Similarly,iftherehasbeen
severalkeypresses,eachofthemisbufferedadthen
returned one by one with every KEYB command.
If four buttons is not enough, one of the buttons can
be reserved as a shift key that doubles the functions
oftheotherkeys.Anexcellentchoiceis➤;remember
that combination ▲★ is not available. Without "shift"
pressed,theotherbuttonsreturn1,2,and4.Withshift
➤pressed, they return 9, A, and C.
Unbuffered method
If key buffering is not desired, instead it is more
important to know the exact state of the keys in real
time, use KEY command. The response is similar to
KEYB command, with exception the L suffix is not
used.

9
Terminal Connections
Only one of the serial connectors can be used at a time.
*
5620.0 *
5620.0 * 5620.0
AB AB AB
Terminal resistor (110 ohm) in
last unit (Jumper J2 on)
Sending
PC or PLC
RS-485
Address 2 Address 1 Address 0
Twisted, shielded cable
Powersupply
85..240 VAC (grey 7 and 8)
or 24VDC (Green 7 and 9 no
polarity)
Card slots B and C are for optional cards
6
5
4
3
2
1
6
5
4
3
2
1789
Card slot A Card slot B Card slot C
Input
A
B6
5
4
3
2
1
TxD
Com
RxD
RS-485
RS-232
Serial signal RS-485 loop last unit must be terminated with 110 ohm
resistor. Termination can be done on terminal connections or by
connecting short cut jumper into following position.
Fail-safe ON
Terminator ON
Fail-safe OFF
Terminator OFF
Use for other cases
and for RS-232 Use for the last
device in the bus
2071-RS v2.0
Factory setting
2071 RS card version 1.0 jumper selection
RxD
TxD
Com
1
3
2
6
7
8
95
X-2071
2071 - PC
RS-232
serial connection
Connector A
PC
9-pin
conn.
(Terminalunit)
2081-RS v1.0 Fail-safe ON
Terminator ON
Fail-safe OFF
Terminator OFF
Use for other cases
and for RS-232 Use for the last
device in the bus
Factory setting
2071 RS card version 2.0 jumper selection
4
3
2
1

10
ABCPower supply 12...32 VDC
(Green connector)
or 85...240 VAC
(Grey connector)
The field display series is modular and easy to as-
semble according to customers wishes. The basic
construction consists of mother board with tree slots,
A,BandC.SlotAdeterminesmetertypeandprovides
alwaysinputsignal.SlotBandCareinterchangeable.
Asfactorydeliveryinputsignalisalwaysinstalledinto
slotA ,mAoutputinto slotBandalarms intoslotC. In
caseof f.ex4alarmsandrelaycardwith2change-over
contact(2+2relays)are used,youmustplacesecond
Slots A-C
Change of meter
type:
Inputcardisplacedalwaysto
slotA.Bychanginginputcard
you can get an other type of
meter.Youcanchangemeter
withpulseinputtometerwith
current input, thermocouple,
strain gage etc.
Additionalslots:
Additionalcardsprovideoutput
4..20 mA, alarms, serial inter-
face, BCD output etc. Meter
data sheet dictates possible
combinations.greyconnectors
allowlinevoltage110..240 VAC
(relaycontacts).
Power supply:
Therearetwodifferentmother
boards power supply 85..240
VAC and 12..32 VDC. VDC-
motherboardaccepts
24VAC.Connectorsarecolour
coded.
relay card into slot B. If you accept only closing or
openingrelaycontacts,youneedonlyonerelaycard
with 4 relays placed into slot C. The slot B is now
usablefor other optionaloutputs.
You can have different types of meters by only
changing the input card in slot A. Data sheet of each
type of meter dictates the possible combinations.
Recalibration of card is not needed; only scaling and
other settings must be set by front panel keys.
All cards have calibration
memory
Control electronic case:
Construction of field display series

11
2011-IN Process input
2021-MU Multi input
2031-IR Infraredsensorinput
2041-SG Straingagemeasurement
2051-PU Scaleablefrequencyindicator
2061-CO Counterinput (max5 kHz)
2066-SEC Timer function, s/min/h ext.
2071-RS Serialinput RS232/RS485
2081-BCD BCD-,Gray-binarycodeinput
(1-5digits)
2000-BASE Basecard withpower supply
2000-REL2 Alarmcard,NO/NC
2000-REL3 Alarm card, Closing contacts
2000-OUT Output card, U and I
2000-RS SerialoutputRS232orRS485
2000-I/O 4 pcs input /output ports
(60 V / 100 mA)
DAC
E²
E²
E²
ADC
E²
uP
Modular field display series 575F...1800F
6543.21
4-6-digitredLEDdisplay
Power supply:
85..240VACor
12..32VDC/24VAC
Optioncards
Alarmcards:
2 relay card, 4 alarm types,
change over contacts
3 relay card, closing contacts
4I/O-ports
Model2011:
2relayschange overcontacts
(alsowithremotereset)
Outputcards(notfor2011):
0/4..20 mA, 0..10 V
RS232orRS485
Sensor supply:
24VDC,
150 mA
Model 2021 contains also process inputs but it can also measure RTD-sensors and ther-
mocouples.2021 hasveryaccurate andfastA/D-converter(16 bit1/64000).
2000 series input and option cards:
Inputcardcontains:
-microprocessor
- bus control
- keys control
- display control
Processinputs(model2011):
0..20 mA, 4..20 mA
0..5/10 V
Potentiometer100Ω..5kΩ
2021
2011

12
Yrittäjäkatu 12
Tel. [phone]
Fax. [phone]
FIN 37100 NOKIA
email [email protected]
http:// www.nokeval.com
Nokeval Oy