MJK 795 User manual

M795GB0503
Manual
MJK Data Transmitter 795
Valid from software version 830434
COMLI PROTOCOL
Station ID:
795 Type:
795 Serial no:
As our products are developed continuously,
we reserve the right to make any changes without prior notice.
MJK Automation A/S
Byageren 7
DK-2850 Nærum
Denmark
Tel: [phone]
Fax: [phone]
www.mjk.com

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M795GB0503
Data Transmitter 795
SW ver. 830434
Konformitätserklärung
Wir, MJK Automation A/S,
DK-2850 Nærum, erklären in
alleiniger Verantwortung, dass
das Produkt
auf das sich diese Erklärung
bezieht mit der/den folgenden
Nor me(en) oder normativen
Dokument(en) übereinstimmt.
EN 50081-1:1995
EN 50082-1:1995
Gemäss den Bestimmungen der
Richtlinie
89/336/EWG; 93/68/EWG
Declaration of Conformity
We, MJK Automation A/S,
DK-2850 Nærum, declare under
our sole responsibility that the
product
to which this declaration relates
is in conformity with the following
standard(s) or other normative
document(s).
EN 50081-1:1995
EN 50082-1:1995
following the provisions of
Directive
89/336/EWG; 93/68/EWG
Declaration de conformite
Nous, MJK Automation A/S,
DK-2850 Nærum, déclarons
sous notre seule responsabilité
que le produit
auquel se réfère cette
déclaration est conforme á la
(aux) norme(s) ou autre(s)
document(s) normatif(s)
EN 50081-1:1995
EN 50082-1:1995
conformément aux dispositions
de Directive
89/336/EWG; 93/68/EWG
Dichiarazione di conformità
Noi, MJK Automation A/S,
DK-2850 Nærum, dichiariamo
sotto la nostra esclusiva
responsabilità che
l’apparecchio
al quale questa dichiarazione
si riferisce, è conforme alla
seguente normativa(e) stand-
ard o ad altri documenti di
normativa(e)
EN 50081-1:1995
EN 50082-1:1995
conformemente alla
disposizioni della Direzione
89/336/EWG; 93/68/EWG
Declaración de Conformidad
Nosotros, MJK Automation A/S,
DK-2850 Nærum, declaramos
bajo nuestra única
responsabilidad que el producto
al cual se refiere esta
declaración, está en
conformidad con la(s)
siguente(e) norma(s) u otros
documentos normativos
EN 50081-1:1995
EN 50082-1:1995
según las disposiciones de la(s)
directiva(s)
89/336/EWG; 93/68/EWG
Konformitetserklæring
Vi, MJK Automation A/S,
DK-2850 Nærum, påtager os
det fulde ansvar for at produktet
som denne erklæring angår, er i
overensstemmelse med følgende
standard(er) eller andre
normdokument(er).
EN 50081-1:1995
EN 50082-1:1995
efter bestemmelserne i
direktiv
89/336/EØF; 93/68/EØF
MJK Data Transmitter 795
MJK Data Transmitter 795

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M795GB0503
Data Transmitter 795
SW ver. 830434
Contents
1 Introduction .......................................... 5
1.1 Versions ........................................................5
1.2 Communications protocols ........................... 5
1.3 MJK-Link™ ..................................................6
1.4 About this manual ........................................ 6
1.5 Safety instructions ........................................6
1.6 Product identification .................................... 6
1.6.1 Standard versions 7
1.6.2 Versions with built-in options 7
2 Mechanical mounting .......................... 8
2.1 Mounting on a wall ....................................... 8
3 Electrical mounting .............................. 9
3.1 Power supply................................................ 9
3.2 In- and output signals 9
3.2.1 I/O terminals, 8 DI/8 DO/4 AI 9
3.2.2 I/O terminals, 12 DI/4 DO/4 AI 10
3.2.3 I/O terminals, 16 DI/4 AI 10
3.3 Connection examples ................................. 11
3.3.1 Digital inputs 11
3.3.2 Digital outputs 11
3.3.3 Analogue inputs 11
3.3 Connection of Pump Controller 704 ...........12
3.4 Connection of communications ports ......... 12
3.4.1 Communications port 12
3.4.2 Built-in modem 12
4 The front panel ................................... 13
4.1 Display and keys 13
4.2 Menu structure ...........................................13
5 Functional menus ............................... 14
5.1.1 F0 - Program version, time and date 14
5.1.2 F0 - Interlock, operation or alarm signal 14
5.1.3 F0 - Internal flag, operation
or alarm signal 14
5.1.4 F0 - Limits, high/low 14
5.1.5 F0 - Digital inputs,
operation or alarm signal 14
5.2 F1 - Digital inputs on/off ............................. 14
5.3.1 F2 - Digital outputs on/off 14
5.3.2 F2 - Internal flag on/off 14
5.4 F3 - Limits - High/Low ................................15
5.5 F4 - Analogue input value # ........................15
5.5.1 F5 - Analogue input scaling 15
5.5.2 F5 - Analogue input on
Pump Controller 704 15
5.6 F6 - Counter for inputs ...............................15
5.7 F7 - Counter for time ..................................15
5.8 F8 - Alarm / Alarm number ........................ 16
5.9.1 F9.1 - Stormflow volume 16
5.9.2 F9.2 - Stormflow calculation 16
5.10 F# - Modem/Line status .............................16
5.11 F* - Communication status ......................... 16
6 Programming of main functions........ 17
6.1 Select language ..........................................17
6.2 Set time and date .......................................17
6.3 Automatic change between
summer time and winter time .....................17
6.4 Access code enabled/disabled ................... 17
6.4.1 Enter password 17
6.5 Calculation of average values on
analogue inputs ..........................................17
6.6 Data logging interval ................................... 17
6.7 Tone / pulse dialing ..................................... 17
6.8 Alarm call on power failure.......................... 17
6.9 Number of incoming rings before answer ...18
6.10 ID. no. for the Data Transmitter ...................18
6.11 Automatic reset of alarms ........................... 18
6.11.1 Call on automatic alarm reset 18
6.12 Start time for operational reports ................ 18
6.13 795 telephone number ............................... 18
6.14 SMSC telephone number ........................... 18
6.15 RS485 function........................................... 18
6.15.1 Master ID number 18
7 Programming of analogue inputs ..... 19
7.1 Select analogue input .................................19
7.2 0 - 20 or 4 - 20 mA input ............................19
7.3 Scaling at 0 / 4 mA ..................................... 19
7.4 Scaling at 20 mA ........................................19
7.5 Monitoring of high limit ............................... 19
7.5.1 Set high limit 19
7.5.2 High limit operation / alarm 19
7.5.3 Dialout on high limit 19
7.5.4 Signal delay for exceeding high limit 19
7.6 Monitoring of low limit ................................. 19
7.6.1 Set low limit 20
7.6.2 Low limit operation / alarm 20
7.6.3 Dialout on high limit 20
7.6.4 Signal delay for exceeding low limit 20
7.7 Divisor ........................................................20
8 Programming of digital inputs ........... 20
8.1 Select a digital input ................................... 20
8.2 NO or NC ...................................................20
8.3 Operational or alarm input ..........................20
8.3.1 Dialout on alarm 20
8.4 Signal delay ................................................ 20
9 Programming of digital outputs ........ 21
9.1 Select a digital output ................................. 21
9.2 NO or NC ...................................................21
9.3 Time controlled output................................ 21
9.4 ON time ......................................................21
9.4.1 Time before start 21

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10 Programming of logical functions ..... 21
10.1 Select the output to receive the result
of the logical function.................................. 21
10.2 Select logical function .................................21
10.2.1 Select signals for the logical function 21
10.2.2 Operational or alarm signal on
internal flag 22
10.2.3 Dialout when alarm signal on
internal flag 22
10.2.4 Signal delay on internal flag 22
11 Programming of interlock .................. 22
11.1 Interlock of this station ................................22
11.2 Interlock interval..........................................22
11.3 Selection of substation ............................... 22
11.4 Interlock active / inactive ............................23
11.4.1 Start of interlock 23
11.4.2 Stop interlock 23
11.4.3 Receivers telephone / ID number 23
11.4.4 Receiver's output 24
12 Programming of Pump Controller(s) . 25
12.1 704 connected ........................................... 25
12.2 Call on alarm or system error on 704 .......... 25
12.2 Programming of the
internal Pump Controller ............................. 25
12.2.1 Select level signal 25
12.2.2 Start level for pump no. 1 25
12.2.2 Stop level for pump no. 1 25
12.2.3 Levels in use in 795 25
12.2.4 Start level for pump no. 2 25
12.3.2 Stop level for pump no. 2 25
12.3.3 Alternation of pumps 25
13 Telephone list for alarms ................... 26
13.1 Telephone number 1-9 ............................... 26
13.2 Number type .............................................. 26
13.2.1 Telephone number 26
13.2.2 Enter pager message 26
13.2.3 Enter SMS message 27
13.2.4 Pause between calls 27
14 Programming of stormflow calculation .. 27
14.1 Stormflow calculation ................................. 27
14.2 Stormflow calculation in use .......................28
14.2.1 Zero point input no. 28
14.2.2 Level signal for flow calculation 28
14.2.3 Number of Q(h) points 28
14.2.4 Height value [h] for level point 28
14.2.5 Flow value [Q] for level point 28
15 Programming of 702 ComTroller ....... 29
15.1 Select 702 .................................................. 29
16 Alarms ................................................. 30
16.1 Operational or alarm signal .........................30
16.2 Alarm calls ..................................................30
16.3 Reset of alarms ..........................................30
15.3.1 Automatic reset of alarms 30
17 Factory settings ................................. 31
18 Signal lists .......................................... 33
19 Register list ......................................... 37
20 Menu structure ................................... 44
20.1 Functional menus ....................................... 44
20.2 Programming menus ..................................45
A Appendix............................................. 50
A1 Technical specifications .............................. 50
A2 Number of signals available ........................ 50
A3 Inputs and outputs .....................................50
A4 Dimensions .................................................50
B Appendix............................................. 51
B1 Maintenance ...............................................51
B2 Service codes ............................................. 51
B2.2 Forced setup
without reset of datalogger 51
B2.3 Forced setup
including reset of datalogger 51
B2.4 Baud rate and communication method 51
B2.5 Activation of SIM card for GSM/GPRS
modem 51
B2.6 Total reset 51
B3 Software upgrade ....................................... 51
B4 SMSC telephone numbers .........................52
B5 Spare parts ................................................. 52

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M795GB0503
Data Transmitter 795
SW ver. 830434
1 Introduction
Thank you for choosing an MJK Data Transmitter
795. A great effort has been put into developing a
product, which complies with all demands.
MJK Data Transmitter 795 is mounted in the field
and with its digital in- and output and analogue
input it is capable to receive and transmit most
types of digital and analogue signals. From a
built-in RS232 serial port, the MJK Data Trans-
mitter 795 can communicate directly with other
equipment i.e. a pc, PLC or a Scada system.
MJK Data Transmitter 795 can with one click on
the mouse or from a telephone call activate digital
output and/or read in- and outputs, alarm signal
type for the latest 9 alarms and all logged data.
Display of a pumping station from a pc with the
monitoring program MJK-Link™.
MJK Data Transmitter 795 can also be program-
med to make a telephone call when there is an
alarm and transmit the alarm as text to a pc or
SCADA system and to a cell phone as SMS text.
The Data Transmitter 795 has a bult in battery for
telephone calls at power failure.
An MJK Data Transmitter 795 with built-in modem
can transmit alarms as SMS messages directly to
the cell phone of employee on duty.
All settings, alarms and logged data can be read
in the display, from easy to use functionnal
menus.
MJK Data Transmitter 795 can be supplied in
versions that communicates via a built-in GSM
modem or telephone modem, or in versions for
radio modem.
MJK Data Transmitter 795 is easy to install and
operate, but read the instruction manual carefully
in order to make optimum use of the unit.
You can allways contact your sales reprsentative
or the MJK Automation Hotline in case of doubt
or for guidance. Try also to log onto http://
www.mjk.com.
1.1 Versions
MJK Data Transmitter 795 is as standard
supplied in the following hardware versions:
- 8, 12 or 16 digital inputs
- 0,4 or 8 digital outputs
- 4 analogue inputs
- 1 or 2 RS232 ports
The RS 232 ports is used as connection to MJK
Pump Controller 704 and to connection of a PC
for configuration or reading of data in the field for
i.e. a portable PC or for configuration or reading
of data, when the Data Transmitter 795 is used
as data
logger.
1.2 Communications protocols
MJK Data Transmitter 795 can be connected to a
distribution station either through a serial
connection (RS232-RS 485), a built-in Hayes
compatible telephone modem, a data radio or a
GSM modem.
Communication complies with one protocol
which must be followed by master and slave.
Data Transmitter 795 is always the slave, i.e. the
Data Transmitter must receive a command before
it can reply. MJK Data Transmitter 795 is supplied
with Comli PLC-protocol as standard. The
following historical data are available in this
protocol:
- Time counter on digital inputs, total, total
today, total yesterday and the latest 24 hours,
all with 1 hour interval.
- Analogue values stored with 5 min. interval 24
hours back, and in the extended log with a
user defined logging interval.

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1.3 MJK-Link™
The Windows based program MJK-Link™ can be
applied to monitor one or several MJK Data
Transmitter 795. Via a PC with modem it is
possible with MJK-Link™ to read values, modify
setpoints and read datalogger for e.g. storm flow
values. All settings in Data Transmitter 795 can
be implemented via MJK-Link™.
Furthermore, MJK Link™ can be used to control
the MJK Pump Comtroller 704. This facitily is
used when e.g. MJK Data Transmitter 795 and
MJK Pump Controller 704 is used together.
This manual covers MJK Data Transmitter 795 in
Comli versions for communication via telephone
modem, GSM modem or closed radio networks.
1.4 About this manual
The manual is divided into 4 main sections:
1: Introduction
Presentation of Data Transmitter 795 and this
manual.
2: Mounting
Information for performing mechanical and
electrical mounting.
3: Basic settings
A look through the most common settings.
4: Field operation
A look through all settings for special
applications of Data Transmitter 795.
1.5 Safety instructions
1: Read this manual carefully.
2: Be aware of the environment on the installa-
tion site. Wear necessary protective
equipment and follow all current safety
regulations.
3: MJK Data Transmitter 795 can give out start
signals to dangerous machinery. Therefore, it
must be ensured that eventually connected
machinery and other equipment are
effectively being put out of service by i.e.
removal of main fuses, lock main- and/or
security switches in off position before
commencing setting, fault finding, service and
maintenance work etc.
4: There is a risk of lethal electrical shock from
some of the terminals on Data Transmitter
795. Be careful not touch these while the unit
is in operation.
Repair
1: Repair must only be made by MJK or a
representative approved by MJK.
Explosion hazardous areas
MJK Data Transmitter 795 is not approved for
use in explosion hazardous areas.
All current local and national standards and
regulations regarding installation and use of Ex
approved material, certifications and safety
instructions for Ex equipment that have been
used in connection with installation of Data Trans-
mitter 795 must be strictly observed.
1.6 Product identification
Check that the item(s) delivered corresponds to
the ordered item(s). The item number is printed
on a label that is sticked onto the packing.
An identical marking can be found on the right
hand side of the cabinet:
➀➀
➀➀
➀Item number
➁➁
➁➁
➁Item description ➂➂
➂➂
➂Serial number
➃➃
➃➃
➃Communications program
➀➀
➀➀
➀
➁➁
➁➁
➁
➃➃
➃➃
➃
➂➂
➂➂
➂

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M795GB0503
Data Transmitter 795
SW ver. 830434
1.6.1 Standard versions
This manual covers the following standard vers-
ions with Comli protocol:
Item no.: In- and outputs: Communication:
204510 4 AI / 8 DI / 8 DO 2 × RS232 w. modem
204511
4 AI / 12 DI / 4 DO 2 × RS232 w. modem
204512
4 AI / 16 DI / 0 DO 2 × RS232 w. modem
204520
4 AI / 8 DI / 8 DO 1 × RS232 wo. modem
204521
4 AI / 12 DI / 4 DO 1 × RS232 wo. modem
204522
4 AI / 16 DI / 0 DO 1 × RS232 wo. modem
MJK Data Transmitter 795 with 2 X RS232 and
built-in telephone modem.
(Item no. 204510/204511/204512)
MJK Data Transmitter 795 with 1 X RS232 and 1 x
communications option port.
(Item no. 204520/204521/204522)
1.6.2 Versions with built-in options
The following type options can be built into Data
Transmitter 795:
Varenr.: Betegnelse:
204570 Galvanically insulated RS232 port
204571 Galvanically insulated RS485 port
204572 Galvanically insulated port for TP 6000
204573 Galvanically insulated port for Niros UHF
204574
Galvanically insulated port for external modem
205105 GSM modem complete w. aerial
205106 GPRS modem complete w. aerial
The factory mounted options can be determined
read on the terminal box lid:
MJK Data Transmitter 795 delivered from factory
with galvanically insulated communications port.
MJK Data Transmitter 795 delivered from factory
with built-in GSM-modem.
For both types of option applies that the data
transmitter is mounted and connected like a stan-
dard data transmitter.
Please see separate documentation for the built-
in options.

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M795GB0503
Data Transmitter 795
SW ver. 830434
2 Mechanical mounting
Data Transmitter 795 must not be mounted in
explosion hazardous areas!
Data Transmitter 795 is IP65 enclosed, and can
be mounted outdoors directly on a wall or a
railing, eventually by means of MJK rain roof
200115 and MJK universal fitting 200205.
MJK Data Transmitter 795 must be mou
ted vertically in order to comply with the IP68
standard.
MJK rain roof 200115 mounted on pole with MJK
universal bracket 200205.
Data Transmitter 795 can also be mounted in a
panel by means of MJK panel mounting kit
200105.
Data Transmitter 795 mounted in a panel with MJK
panel mounting kit 200105.
2.1 Mounting on a wall
The cabinet is mounted using three screws. The
upper screw is used for the suspension and the
two lower screws is used to fix the cabinet.
The distance between the mounting screws is
shown on the dimensional drawing.
Please observe minimum distance if more than
one cabinet is mounted.
You will find a jig in full size at the back of this
manual.
Dimensional drawing for mounting screws.
See also page 51.
Remove the terminal box lid to gain access to the
two lower mounting holes.
The cabinet is suspended by the upper screw and.
fastened with the two lower screws.
X
Do not use a screw machine!

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M795GB0503
Data Transmitter 795
SW ver. 830434
3 Electrical mounting
Data Transmitter 795 must not be mounted in
explosion hazardous areas!
Data Transmitter 795 must not be connected to
the power supply before all connections are
made.
Remove the terminal lid and the front panel to
gain acces to all terminals.
3.1 Power supply
Data Transmitter 795 can be supplied from both
230 V AC and 24 V DC.
Terminal: Designation:
Protective ground
N 230 V AC neutral
L 230 V AC live
- 24 V DC negative
+ 24 V DC positive
Please note, that 24 V DC will not be available on
the terminals marked '24 V DC forsyning' unless
the Data Transmitter is fed from the mains.
3.2 In- and output signals
Data Transmitter 795 is delivered in 3 different I/O
variants; 4AI / 8DI / 8DO, 4AI / 12DI / 4DO and
4AI / 16DI respectively.
Specifications:
DI: Passive with common negative, max. 24 V DC.
(Optocoupler med 10 kΩserial resistor)
Trig voltage: < 1 V DC = Off, > 10 V DC = On,
pulse length > 100 ms.
DO: Voltage free relay contacts,
max. 1 A @ 24 V DC / 0,5 A @ 48 V AC.
AI: 0/4 - 20 mA or 0 - 1 V DC.
Input impedance = 50 Ω.
DI 1 +
DI 2 +
DI 3 +
DI 4 +
DI 1/2/3/4 common -
DI 5 +
DI 6 +
DI 7 +
DI 8 +
DI 5/6/7/8 common -
AI 1 +
AI 1 -
AI 2 +
AI 2 -
AI 3 +
AI 3 -
AI 4 +
AI 4 -
Rx for RS232 to 704
Tx for RS232 to 704
DO 1
DO 2
DO 3
DO 4
DO 1/2/3/4 common -
DO 5
DO 6
DO 7
DO 8
DO 5/6/7/8 common -
Shield for RS232 to 704
Signal ground for RS232 to 704
24 V DC out +
24 V DC out -
3.2.1 I/O terminals, 8 DI/8 DO/4 AI

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M795GB0503
Data Transmitter 795
SW ver. 830434
DI 1 +
DI 2 +
DI 3 +
DI 4 +
DI 1/2/3/4 common -
DI 5 +
DI 6 +
DI 7 +
DI 8 +
DI 5/6/7/8 common -
AI 1 +
AI 1 -
AI 2 +
AI 2 -
AI 3 +
AI 3 -
AI 4 +
AI 4 -
Rx for RS232 to 704
Tx for RS232 to 704
DI 9 +
DI 10 +
DI 11 +
DI 12 +
DI 9/10/11/12 common -
DO 1
DO 2
DO 3
DO 4
DO 1/2/3/4 common -
Screen for RS232 to 704
Signal ground for RS232 to 704
24 V DC out +
24 V DC out -
DI 1 +
DI 2 +
DI 3 +
DI 4 +
DI 1/2/3/4 common -
DI 5 +
DI 6 +
DI 7 +
DI 8 +
DI 5/6/7/8 common -
AI 1 +
AI 1 -
AI 2 +
AI 2 -
AI 3 +
AI 3 -
AI 4 +
AI 4 -
Rx for RS232 to 704
Tx for RS232 to 704
DI 9 +
DI 10 +
DI 11 +
DI 12 +
DI 9/10/11/12 common -
DI 13 +
DI 14 +
DI 15 +
DI 16 +
DI 13/14/15/16 common -
Screen for RS232 to 704
Signal ground for RS232 to 704
24 V DC out +
24 V DC out -
3.2.2 I/O terminals, 12 DI/4 DO/4 AI
3.2.3 I/O terminals, 16 DI/4 AI

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M795GB0503
Data Transmitter 795
SW ver. 830434
3.3 Connection examples
3.3.1 Digital inputs
The digital inputs are passive, i.e. they need to be
supplied from an external power source or from
the terminals marked '24 V'.
Note, that the inputs has common negative in
groups of 4 inputs.
A common installation error is that an input is
not connected to the correct negative terminal!
The inputs can be individually configured to be
normally open (NO) or normally closed (NC).
Above diagram show an example of connecting two
switches to DI1 and DI2. Note the common
negative terminal!
3.3.2 Digital outputs
The digital outputs are voltage-free relay contacts
with a capacity of max. 24 V DC / 1 A or max. 48
V AC / 0,5 A resistive load.
The outputs can be individually configured to be
normally open (NO) or normally closed (NC).
3.3.3 Analogue inputs
The analog inputs are passive. i.e. they must be
supplied from an external power source or from
the terminals marked '24 V'.
Every input have its own plus and negative termi-
nal.
A common installation fault is that an input is
not connected to the correct negative terminal!
The input range can be individually configured to
0-20 mA or 4-20 mA.
A passive mA signal
from a pressure
transmitter.
An active mA signal from
a level transmitter.

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M795GB0503
Data Transmitter 795
SW ver. 830434
3.3 Connection of Pump Controller 704
Only the RS232 port on the plug-in terminals of
the Data Transmitter can be used for connecting
a MJK Pump Controller 704. A screened, twisted
pair cable must be used, and it should be
connected as shown below:
DO NOT CONNECT
THE SHIELD IN
THIS END!
The shield must not be connected to the Pump
Controller 704.
Max. cable length is 15 metres.
3.4 Connection of communications ports
(Only item no. 204520 / 21 / 22.)
3.4.1 Communications port
All options listed in section 1.6.2 is supplied with
a flat cable, that just need to be mounted in the
communications port socket on the lower PCB.
See also separate documentation for the option
in question.
3.4.2 Built-in modem
The built-in modem can be connected to a
telephone outlet with the enclosed RJ11 cable. If
the modem should be connected to a terminal,
the cable should be stripped and only the red og
blue wire need to be connected. The two other
wires are not used.

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Data Transmitter 795
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Above figure is an overview of the general function of the functional keys.
See also page 42.
4 The front panel
Display
2 x 24 digit backlit
alphanumerical display
for indication of user
menus and measuring
values.
ESC. key
This key is used to go
back to the previous
menu, or to cancel a
selection. Press this
key 2 or 3 times to
revert to functional
indication.
MENU key
This key is used to
switch between main
menus and submenus.
Arrow keys
The arrow keys are
sed for altering the
current setting. In a
sub-menu the current
selection is always
shown in the upper
line, and the alternative
selection is shown in
brackets in the lower
line. The arrow keys
are used to select an
alternative setting. The
arrow keys are also
used to select input
and output number.
The ↑key increase
and the ↓key
decrease a value.
Numerical keys
The keys 0-9, #,*are
used to enter
telephone numbers,
delays, analogue
scaling etc.
Functional key F
The function key are
used for selecting the
different functional
menus to be displayed.
The illustration show
the function menu F0
for program version,
time and date.
ENTER key
The ENTER kry is used
to change between the
main menu and
submenus and to go
through the submenus.
The ENTER kay is
always used to confirm
a selection in a
submenu.
4.2 Menu structure
4.1 Display and keys
SUBMENU W.
SELECTION
MAIN
MENU
SUBMENU W.
SELECTION
INDICATION
MENUS
MAIN
MENU

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M795GB0503
Data Transmitter 795
SW ver. 830434
5 Functional menus
5.1.1 F0 - Program version, time and date
Menu F0 displays date og and time. Moreover, it
will display the current communications protocol
and program version.
5.1.2 F0 - Interlock, operation or alarm signal
Menu F0 followed by 1 x 'down arrow' will display
which signals that initiate the 9 programmable in-
terlock sequences:
'A': alarm signal, '+': operation signal,
'-': not in use.
5.1.3 F0 - Internal flag, operation or alarm signal
Menu F0 followed by 2 x 'down arrow' will display
which signals that are linked to the internal flags:
'A': alarm signal, '+': operation signal, '-':
not in use.
5.1.4 F0 - Limits, high/low
Menu F0 followed by 2 x 'down arrow' will
indicate which analogue inputs that are linked to
a high/low alarm limit, and also if the limit will
release an operational or alarm signal:
'A': alarm signal, '+': operation signal, '-':
not in use.
5.1.5 F0 - Digital inputs, operation or alarm signal
Menu F0 followed by 4 (and 5) x 'down arrow'
display which digital inputs, that releases an ope-
ration or alarm signal:
'A': alarm signal, '+': operation signal, '-':
not in use.
5.2 F1 - Digital inputs on/off
Menu F1 indicates if the digital inputs are set ON
or OFF. Up to 8 inputs are shown simultaneously.
If there are more than 8 inputs, the remaining
inputs will be displayed by pressing one of the
arrow keys:
Note, that a delay period can be set for every di-
gital input so that the digital input can go ON for a
short period without triggering an eventual alarm.
When the input is OFF, an empty field is
shown. When the input goes ON, a flashing field
is shown during the delay time, after which a field
is shown constantly.
5.3.1 F2 - Digital outputs on/off
Menu F2 displays whether the digital outputs are
set ON or OFF:
A delay period can be set for every digital output.
This delay period must run out before the output
are activated.
When the output is OFF, an empty field is
shown. When the output goes ON, a flashing field
are shown during the delay time, after which a
field are shown constantly.
5.3.2 F2 - Internal flag on/off
Menu F2 followed by 1 x 'down arrow' will display
the status for the internal flags.

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M795GB0503
Data Transmitter 795
SW ver. 830434
5.4 F3 - Limits - High/Low
Menu F3 indicates if high and low limit is ON or
OFF for the analogue inputs. The first four digits
indicate if the high limit setting is exceeded and
the last four digits indicate if the low limit setting is
exceeded:
A delay time can be set individually for each
analogue input in that the the input can exceed the
limit for a short period without activating an alarm.
An empty square is displayed when the limit is
not exceeded. When the limit is exceeded, a solid
square is displayed. If a delay period is set, the
square will flash during the delay period.
5.5 F4 - Analogue input value #
Menu F4 indicates the value of the analogue inputs
as a bargraph:
Select the desired input with the arrow keys or
the numeric keys.
5.5.1 F5 - Analogue input scaling
Menu F5 indicates the value of an analogue input
as a percentage and the mA signal and as a
scaled value:
Select the desired input with the arrow keys or
the numeric keys.
The scaled value is determined by the
programming of the analogue input.
If the value represents e.g. a level measurement
in a tank, and the level normally varies between 2
m and 3 m, the analogue input will normally be
programmed so 2 m corresponds with '200' (low
value) and 3 m corresponds with '300' (high
value).
A level of 2,5 m will then give a scaled readout of
250 and 50 %.
If the scaled value should be shown as '2,5', it is
possible to set a divisor for each input. In this
example the divisor should have the value 100.
See also section 7.
5.5.2 F5 - Analogue input on Pump Controller 704
Menu F2 followed by 1 x 'down arrow' display
the value of the analogue input on the Pump
Controller 704 (if connected):
Please observe that the value is collected directly
from the Pump Controller 704 and is not scaled.
5.6 F6 - Counter for inputs
Whenever a digital input or an analogue high/low
limit is active, it will be recorded by a counter. The
number is displayed in menu F6:
Use the arrow keys to change between:
- digital input 1 - 8/12/16
- analogue high limit 1 - 4
- analogue low limit 1 - 4
In addition, the numerical keys 1 - 8 can be used
to select the desired input.
The selected counter can be reset by pressing
the ENTER key.
5.7 F7 - Counter for time
Menu F7 indicate for how long the digital input
and the analogue high and low limits have been
active. Time counters is running continuously
such as if the input is set to OFF for some time
and then is set to ON, the counter will count from
the last value. The time is displayed in hours and
minutes:
Use the arrow keys to change between:
- digital input 1 - 8/12/16
- analogue high limit 1 - 4
- analogue low limit 1 - 4
In addition, the numerical keys 1 - 8 can be used
to select the desired input.
The selected counter can be reset by pressing
the ENTER key.

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M795GB0503
Data Transmitter 795
SW ver. 830434
5.8 F8 - Alarm / Alarm number
Menu F8 indicate if the last 9 alarms are ON or
OFF:
Each time a new alarm is activated, it will be
recorded as alarm no. 1 and all other recorded
alarms will move down one place and alarm 9 will
be deleted. When the alarm for one input has
been ON one time it must be set to OFF before a
new alarm from the same input is accepted as an
alarm.
If the alarm has not been reset and another 9
alarms occur, i.e. the first alarm become no. 10
and therefore will become invisible in the alarm
list, this alarm will be reset automatically.
A flashing square is shown when an alarm
goes ON.
If the alarm are being reset but is still active, a so-
lid square is shown constantly. When the alarm
goes OFF again, a square is shown constantly.
By means of the arrow keys or by entering the
alarm number, the status, type and timestamps
for on and off time can be displayed. Whenever
an alarm goes ON, the input number and start
time will be recorded. Similarly, when the alarm is
reset, the reset time is recorded, and when the
alarm goes OFF, the end time will be recorded:
'ID' indicates the ID number of the Data Transmit-
ter itself.
If the Data Transmitter are configured as a Master
in a multidrop system, the 'ID' can also be the ID
number of a connected Slave unit.
Return to normal operating display with the arrow
keys or by prssing the '0' key.
5.9.1 F9.1 - Stormflow volume
Menu F9 displays the recorded stormflow
volume.
The counter can be reset with the ENTER key.
5.9.2 F9.2 - Stormflow calculation
Whenever a stormflow occur, the flow is
displayed as m3/h in menu F9-2:
5.10 F# - Modem/Line status
(Only for versions with built-in telephone modem
or GSM modem.)
Menu F# displays the status of outgoing alarm
calls or incoming calls:
The following is displayed during an incoming
call:
The following is displayed during an outgoing
alarm call to one of the telephone numbers in the
telephone number list:
When Data Transmitter 795 interlocks another
Data Transmitter 795 i.e. in order to perform a
remote start or stop of a pump, the following is
displayed:
5.11 F*- Communication status
Menu F* indicate the communication status on
the serial port, the port to Pump Controller 704,
and the built-in telephone modem:
795 serial: R = Rx, T = Tx, CD = Carrier Detect,
RTS = Request to send og CTS = Clear to send.
704: R = Rx, T = Tx and = Pump Controller
704 not interlocked / Pump Controller 704
interlocked. The Pump Controller 704 signal to
the Data Transmitter that the Pump Controller
704 will not activate any control outputs, because
the Pump Controller are interlocked.

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M795GB0503
Data Transmitter 795
SW ver. 830434
6 Programming of main functions
6.1 Select language
Select the desired language with the arrow keys
and confirm with ENTER.
6.2 Set time and date
Enter time and date with the numerical keys or
the arrow keys. Confirm with ENTER:
Just press ENTER at all entries if changes are not
needed in order to proceed to the next menu.
6.3 Automatic change between summer
time and winter time
Select if the clock should change automatically
between summer time and winter time:
Use the arrow keys to select and confirm with
ENTER.
Just press ENTER at all entries if changes are not
needed in order to proceed to the next menu:
6.4 Access code enabled/disabled
Select if an access code is required to gain ac-
cess to the remaining system menus. This
function make it possible to protect the system
configuration from unauthorized changes:
Use the arrow keys to select and confirm with
ENTER.
6.4.1 Enter password
If access code protection is selected, a 4-digit
access code is required in order to gain access
to the remaining system menus.
6.5 Calculation of average values on
analogue inputs
The value of an analogue input is recorded every
second, and every 5 minutes the values is log-
ged. If averaging of the analogue values are
selected, an average of the analogue value over
the last 5 minutes will be calculated and logged.
If averaging is not selected, the analogue value at
the actual time will be logged.
Use the arrow keys to select and confirm with
ENTER.
6.6 Data logging interval
The data logging interval is used for the extended
logging function, where the value for the analogue
input and the level from MJK Pump Controller
704 is stored.
The interval between loggings can be chosen
amongst the following values: 30 sec. (00:30), 1
min. (01:00), 5 min. (05:00), 10 min. (10:00), 30
min. (30:00) and 1 hour (60:00).
Use the arrow keys to select and confirm with
ENTER.
6.7 Tone / pulse dialing
Select between pulse or tone dialing from a
telephone modem:
Use the arrow keys to select and confirm with
ENTER.
6.8 Alarm call on power failure
If alarm call at power failure is selected, the Data
Transmitter will call the first telephone number in
the telephone list when the power supply fail. A
power failure will not be detected before the
supply has been gone for minimum 30 sec.
Hereby alarm calls on short power surges are
avoided.
Use the arrow keys to select and confirm with
ENTER.

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M795GB0503
Data Transmitter 795
SW ver. 830434
6.9 Number of incoming rings before
answer
Set the number of rings (1 to 5) before Data
Transmitter 795 answer the call.
Use the arrow keys or numerical keys 1 to 5 to
select and confirm with ENTER.
6.10 ID. no. for the Data Transmitter
The ID number is used for identification of the
individual data transmitters.
Use the arrow keys or numerical keys and
confirm with ENTER.
6.11 Automatic reset of alarms
Select if incoming alarms should be automatically
reset when the alarm condition disappears.
If 'NO' are selected, all incoming alarms need to
be reset manually.
Use the arrow keys and confirm with ENTER.
6.11.1 Call on automatic alarm reset
If 'Automatic reset of alarms' have been selected
as described in the previous section, there will be
an option to select if the Data Transmitter should
perform a call, if an alarm condition disappear
and therefore releases an automatic reset of an
alarm.
Use the arrow keys and confirm with ENTER.
6.12 Start time for operational reports
Many plant managers want to have the
operational reports displaced so they will elapse
between i. e. 07:00 to 06:59. Enter the desired
displacement counted from midnight:
Use the arrow keys or numerical keys and
confirm with ENTER.
6.13 795 telephone number
Enter the telephone number that the Data Trans-
mitter is connected to. The number is used as ID
no. in connection with transmission of SMS
alarms through landlines.
Use the numerical keys and confirm with ENTER.
6.14 SMSC telephone number
SMS messages need to be dialed to a specific
SMS gateway, that will handle the further trans-
mission through the cellphone network.
Use the numerical keys and confirm with ENTER.
Telephone numbers to SMSC gateway can be
found in Appendix B.
6.15 RS485 function
This function is only available on Data Transmitter
795 with RS485 port.
Select if this Data Transmitter 795 should be a
Master (the unit sending out alarms), or if this
Data Transmitter 795 should be a Slave which is
interconnected to another Master via the RS485
port:
Use the arrow keys and confirm with ENTER.
6.15.1 Master ID number
Select the Master ID for this Data Transmitter 795
if it is set to Master, or select the Slave ID for the
unit in the multidrop cluster which should receive
alarms and relay them via modem or radio:
Use the arrow keys and confirm with ENTER.

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M795GB0503
Data Transmitter 795
SW ver. 830434
7 Programming of analogue inputs
7.1 Select analogue input
Select the desired analogue input with the arrow
keys and confirm with ENTER.
7.2 0 - 20 or 4 - 20 mA input
Select input type with the arrow keys and confirm
with ENTER.
7.3 Scaling at 0 / 4 mA
Set the scaling of the low (0/4) mA value.
NB! The setting for the low mA value must be
lower than the setting for the high mA value! (See
next section.)
Use the numerical keys and confirm with ENTER.
7.4 Scaling at 20 mA
Set the scaling of the high mA value.
NB! The setting for the high mA value must be
higher than the setting for the low mA value! (See
previous section.)
Use the numerical keys and confirm with ENTER.
7.5 Monitoring of high limit
Select if exceeding a high limit should be
recorded or not.
Use the arrow keys and confirm with ENTER.
7.5.1 Set high limit
Set the upper limit value that should cause a
recording in the operational or alarm log - see
also section 13, "Operational or alarm signal".
In case the input are not scaled, 20 mA on the
analogue input will correspond to 9999.
Use the arrow keys or numerical keys and
confirm with ENTER.
7.5.2 High limit operation / alarm
Select if a high limit excession should be
recorded in the alarm log or the operational log -
see also section 15, "Operational or alarm signal".
Use the arrow keys and confirm with ENTER.
7.5.3 Dialout on high limit
Select if a high limit activation should cause a
dialout attempt.
Use the arrow keys and confirm with ENTER.
7.5.4 Signal delay for exceeding high limit
Select the period in which the analogue value can
exceed the high limit without activating an alarm:
Use the arrow keys (double arrow for minutes
and single arrow for seconds) and confirm with
ENTER.
7.6 Monitoring of low limit
Select if exceeding a low limit should be recorded
or not.
Use the arrow keys and confirm with ENTER.

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M795GB0503
Data Transmitter 795
SW ver. 830434
7.6.1 Set low limit
Set the lower limit value that should cause a
recording in the operational or alarm log - see
also section 13, "Operational or alarm signal".
In case the input are not scaled, 0 / 4 mA on the
analogue input will correspond to 0.
Use the arrow keys or numerical keys and
confirm with ENTER.
7.6.2 Low limit operation / alarm
Select if a low limit excession should be recorded
in the alarm log or the operational log - see also
section 15, "Operational or alarm signal".
Use the arrow keys or numerical keys and
confirm with ENTER.
7.6.3 Dialout on high limit
Select if a low limit activation should cause a
dialout attempt.
(Maximum period is 8 hours.)
Use the arrow keys and confirm with ENTER.
7.6.4 Signal delay for exceeding low limit
Select the period in which the analogue value can
exceed the low limit without activating an alarm:
Use the arrow keys (double arrow for hours/
minutes and single arrow for seconds) and
confirm with ENTER.
7.7 Divisor
Set the desired divisor value for the analogue in-
put. The divisor has only significance for
displaying of analogue values in function menu
F5, and not to the values that are transmitted to
other data transmitters or SCADA systems.
The divisor has no significance for the setting of
high or low limits.
Use the arrow keys or numerical keys and
confirm with ENTER.
8 Programming of digital inputs
8.1 Select a digital input
Select the desired digital input with the arrow
keys and confirm with ENTER.
8.2 NO or NC
Select if the input should be active (ON) when
there is a signal on the input or passive (OFF)
when there is no signal on the input.
Use the arrow keys and confirm with ENTER.
8.3 Operational or alarm input
Select if an activation of the input should be
recorded in the alarm log or in the operational log
- see also section 15, "Operational or alarm sig-
nal".
Use the arrow keys and confirm with ENTER.
8.3.1 Dialout on alarm
Select if an activation of the digital input should
cause a dialout attempt:
Use the arrow keys and confirm with ENTER.
8.4 Signal delay
Select the period in which the digital input can be
active without causing an alarm or a recording of
an operational signal: (Maximum period is 8
hours.)
Use the arrow keys (double arrow for hours/
minutes and single arrow for seconds) and
confirm with ENTER.