GUILCOR AR006687 User manual

Temperature, humidity and pressure regulator
with RS485 serial output
AR006687
AR006689
AR006690
AR006688
AR006693
Instruction Manual

2
Table of content
1. GENERAL DESCRIPTION......................................................................................................4
2. REGULATOR MOUNTING AND CONNECTION...............................................................4
3. TYPICAL APPLICATION WIRING, CONNECTION OF TERMINALS .........................6
4. DIMENSIONS.............................................................................................................................6
5. DESCRIPTION OF DEVICE FUNCTION AND SETTING.................................................9
5.1. DEVICE SETTING FROM THE MANUFACTURER ...................................................................................... 9
5.2. RELAY OUTPUTS ................................................................................................................................... 9
5.3. BINARY INPUTS ..................................................................................................................................... 9
5.4. ACTUAL REGULATOR PRESET ............................................................................................................. 10
5.4.1. Value assigned to output relay...................................................................................................................... 10
5.4.2. When close output relay................................................................................................................................ 11
5.4.3. Regulator address setting.............................................................................................................................. 12
5.5. REGULATOR SETTING CHANGE ........................................................................................................... 12
5.5.1. Setting with PC and TSensor software.......................................................................................................... 12
5.5.2. Setting with using regulator keys .................................................................................................................. 12
5.5.3. Setting with using of Modbus communication protocol ................................................................................ 13
5.6. EXTENDED SETTING MODE.................................................................................................................. 13
5.7. RESTORE TO „FACTORY DEFAULT“.................................................................................................... 18
6. DESCRIPTION OF COMMUNICATION PROTOCOLS ..................................................18
6.1. MODBUS RTU..................................................................................................................................... 19
6.1.1. Supported functions ...................................................................................................................................... 19
6.1.2. Jumper .......................................................................................................................................................... 19
6.1.3. Modbus registers of the regulator................................................................................................................. 19
6.1.4. Far controlling of output relays status.......................................................................................................... 20
6.1.5. Output relay alarm condition configuration with using of Modbus communication protocol 2.................... 21
6.2. PROTOCOL COMPATIBLE WITH ADVANTECH-ADAM STANDARD ...................................................... 22
6.2.1. Jumper .......................................................................................................................................................... 22
7. ERROR STATES OF THE DEVICE .....................................................................................24
8. READINGS ON LCD DISPLAY ............................................................................................25
9. PREVENTIVE MAINTENANCE AND CALIBRATION ...................................................25
10. TECHNICAL SPECIFICATION............................................................................................25
10.1. TECHNICAL PARAMETERS ................................................................................................................... 25
10.1.1. Common parameters..................................................................................................................................... 25
10.1.2. AR006687 - temperature regulator............................................................................................................... 26
10.1.3. AR006689 - relative humidity and temperature regulator............................................................................ 26
10.1.4. AR006690- temperature and humidity regulator.......................................................................................... 26
10.1.6. AR006688 - temperature regulator, external probe....................................................................................... 27
10.1.7. AR006693 –temperature, relative humidity and barometric pressure regulator .........................................27
10.1.9. Value computed from measured relative humidity and temperature ............................................................ 28
10.1.10. Relative humidity and temperature restriction.............................................................................................. 29
10.2. OPERATING CONDITIONS .................................................................................................................... 29
10.3. END OF OPERATION............................................................................................................................. 30
10.4. TECHNICAL SUPPORT AND SERVICE.................................................................................................... 31
11. APPENDIX A ............................................................................................................................ 31
12. APPENDIX B ............................................................................................................................32
13. APPENDIX C ............................................................................................................................ 33
14. APPENDIX D ............................................................................................................................ 34

3
General safety rules
The following summary is designed to prevent injury hazards or device damage. Operate the
instrument in accordance with this manual to prevent electric trauma.
Service should be performed by a qualified person only.
Connect and disconnect correctly. Do not connect and disconnect a lead-in cables if the device is
under electric voltage.
Do not use the instrument without the cover.
Do not use the instrument, if it does not work correctly. If the instrument seems not to work
correctly, have it checked by a qualified service person.
Do not use the instrument in an explosive environment.
Read instruction manual before the first device connection, please.
Before you remove probe of the regulator HxxxxP, make sure that the pressure in a pressure
chamber (duct, pipe … ) and the ambient pressure are in equilibrium.
Copyright: It is prohibited to copy and edit this instruction manual and make any changes at all
without explicit agreement of Guilcor. All rights reserved.

4
1. General description
Regulators line are designed for online monitoring of temperature in °C or °F, relative humidity
of air without aggressive ingredients, barometric pressure and three binary inputs for detection
of binary signals. Measured temperature and relative humidity are recomputed to following humidity
expression: dew point temperature, absolute humidity, specific humidity, mixing ratio and specific
enthalpy. It is possible to set correction for altitude (pressure offset) and to choose one of the
following pressure units: hPa, kPa, mbar, mmHg, inHg, inH2O, PSI, oz/in2.
The device is equipped with two relay outputs for alarming or controlling of external devices. It is
possible to assign any input value to each relay, to set comparing limit, delay, hysteresis, acoustic
alarm or change its status by far control with using of Modbus communication protocol. The device
communicates via link RS485.
Type
Temperature
Humidity
Pressure
Computed value
Binary inputs
AR006687

-
-
-
3x
AR006689


-

3x
AR006690


-

3x

-
3x



3x
AR006688 **/ - -
AR006693 
*/ The removable probe for compressed air measurement is noninterchangeable part of the device.
The protection of the connector is IP67
**/ The type AR006688 is designed for two wires connection of external Pt1000 temperature
sensor.
Supported communication protocols are Modbus RTU and protocol compatible with standard
Advantech-ADAM. Devices are preset from manufacturer to Modbus RTU communication protocol.
If you would like to use different communication protocol then Modbus RTU, it is necessary preset
them –see latter. Temperature, relative humidity and pressure sensors are non-removable
instrument parts except AR006688 device, that is designed for two wires connection of external
Pt1000 temperature sensor. Measured and computed values are displayed on dual line LCD. It is
also possible to display both readings with cyclic overwriting in 4 seconds interval. Display can be
also switched OFF totally.
2. Regulator mounting and connection
Regulators are designed for wall mounting. Device must be mounted on the plane surface to
prevent its deformation. Mounting holes and connection terminals are accessible after demounting of
four screws in the corners of the box and removing the lid. There is recommended to use screws with
half round head with cross-recessed screw ST 3.9 (DIN 7981). Lace the lead-in cable with outer
diameter of 3 to 6.5 mm through the glands at the case wall and connect them according schematic
below. Terminals are self-clamping and can be opened by a suitable screwdriver. For the opening,
insert the screwdriver to smaller terminal hole and lever by him. Do not forget to tighten glands and
case lid with inserted packing after cables connecting. Insert attached plug into unused cable
glands too. Do NOT connect the regulator under voltage.
It is NOT recommended to use the device for long time under condensation conditions. It could
be the cause of water steam condensation inside the sensor’s cover into water phase. This liquid phase

5
stays inside sensor’s cover and can’t escape from the cover easily. It can dramatically increase
response time to relative humidity change. If
water condensation occurs for longer time it can
cause sensor damage. Similar effect can occur
under water aerosol conditions.
External temperature probe connectable to
AR003912 must be type of “two wires
with shielding”. The probe cable length and
size of conductor affects measurement
accuracy.
If connected probe is equipped with
metal stem, we recommend using probes with
metal stem not connected to cable shielding. Or
else it is necessary to arrange metal stem
is not connected to any other circuitry.
Maximum probe cable length is 10 m. Connect
probe cable shielding to proper terminal and do
not connect it to any other circuitry and do not
ground it.
The cables for binary inputs and external
sensor for regulator AR003912 must be placed
as far as possible from potential interference
sources.
For devices with RS485 output there is
recommended to use shielded twisted copper cable, maximal length 1200m. The cable must be
located at indoor rooms. Nominal cable impedance should be 100 Ω, loop resistance max. 240 Ω,
cable capacity max. 65 pF/m. Outside diameter of the cable for regulator connection must be from 3
to 6.5 mm. Suitable cable is e.g. SYKFY 2x2x0.5 mm2, where one wire pair serves for device
powering and the other pair for communication link. The cable should be led in one line, i.e. NOT
to „tree“ or „star“. Termination resistor should be located at the end. For short distance other
topology is allowed. Terminate the network by a termination resistor. The value of the resistor is
recommended about 120 Ω. For short distance termination resistor can be left out. The cable should
not be led in parallel along power cabling. Safety distance is up to 0.5 m, otherwise undesirable
induction of interference signals can appear.
Electrical system (wiring) may be done only by a worker with required qualification by rules in
operation.

6
3. Typical application wiring, connection of terminals
4. Dimensions
AR006687

7
AR006689
AR006693

8
AR006688
AR006690
Probe for compressed
air measurement

9
5. Description of device function and setting
Information from regulator is available directly through LCD or you can read them with one of
next communication protocols ( Modbus RTU, Advantech-ADAM ).
5.1. Device setting from the manufacturer
If special setting was not required in the order, regulator is set from the manufacturer to the
following parameters:
communication protocol: Modbus RTU
regulator address: 1
communication speed: 9600Bd, no parity, 2 stop bits
Value assigned to Relay1 and Relay2: none
Password for setting through keys (PASS): 0000
LCD display: on
value shown at first LCD line: temperature, temperature / pressure –by device type
value shown at second LCD line: relative humidity / dew point temperature
temperature unit: °C
pressure unit: hPa
correction for altitude: 0 hPa (absolute pressure)
computed value preset: dew point temperature
relay response for error: stay unchanged at previous condition
signalization of binary inputs status: LED diode lights if input contact is open
acoustic alarm: off
5.2. Relay outputs
Regulator is equipped with two relay outputs. It is possible to assign any input or computed value
or “Far condition” (see chapter 6.1.4 at page 20) to each relay, to set comparing alarm limit, if the
relay may close if measured value is higher (Hi) or lower (Lo) than preset limit, delay for while must
be preset condition true before relay close its contact and hysteresis for return to open status. For
binary inputs: if it is preset to „HI“ then output relay is closed when input contact is opened, if it is
preset to „Lo“ then output relay is closed when input contact is closed. Each relay status is indicated
with LED diode and shown on LCD with corresponding symbols „ “ or „ “.
Terminal block for connecting the relays is equipped with terminals GND, which are connected
to the power supply of the device (see chapter “Typical application wiring, connection of terminals”).
When you need to use relays to switching the voltage identical with the supply voltage of the device,
you can use jumpers J1 and J2 for interconnection the power supply of the device directly with the
common contacts of the relays. This modification is used in devices with serial number higher
than 16981000 (the wiring diagram of the relay contacts for devices with serial number lower than
16981000 is given in the “Appendix D”).
The devices are equipped with two relays that are not intended for direct switching power circuits
or mains voltage. If necessary, use suitable type of external relay (an example of wiring is given in
the “Appendix A”).
5.3. Binary inputs
It is possible to read status of three galvanically not isolated binary inputs. It is possible to connect
“open contact” or external voltage. Auxiliary power supply +U terminal can be used to supplying of
external sensors and detectors. Visualization of binary inputs is done by three LED diodes placed on
the left side from LCD. Green one represents input Binary 1, yellow input binary 2 and red input

10
binary 3. If binary input is not connected or is without any signal, then binary input is interpreted as
„1“, when input contact is closed (connected input), then binary input is interpreted as „0“. For each
binary input there is possible to set indication LED function –if is lighting when binary input is closed
or opened. Binary input status can be assigned to any of output relays. It is possible to choice if output
relay is closed or opened when binary input is closed/opened.
5.4. Actual regulator preset
It is possible to display actual regulator preset on its LCD display by
pressing of „“ key. . If „Output relay alarm condition configuration with
using of Modbus communication protocol“ is active (Remote Control), then
device’s LCD display shows text „bloc“. It means, device’s keyboard is
disabled for time of remote control (setting change), see chapter 6.1.5 at page
21. LCD shows information about Relay1 and then Relay2 setting step by
step. Information about Relay1 are indicated with symbol „ “, for Relay2 with symbol „
“ (at right top corner of LCD). It is possible to edit parameters after pressing „SET“
key and entering of correct password „PASS“ –see chapter „Change of “Password for setting
through keys” (PASS)” at page 14. Following examples are for Relay1 setting, similarly are displayed
values for Relay2. Pressing of „ESC“ key ends this mode and switch to actual value displaying, the
same occur if more than 20 s is not pressed any key.
5.4.1. Value assigned to output relay
None, relay is still off
Temperature at °C
Relative humidity
Computed value
(dew point temperature)
Barometric pressure
Binary input 1,input 2
and 3 similarly
far condition 0
far condition 1
FAR0 –„far condition 0“: after device’s power on the relay is open
FAR1 –„far condition 1“: after device’s power on the relay is close
If “far condition” is assigned to output relay, then there is possible to change the output relay status
by Modbus communication protocol only. See chapter 6.1.4 at page 20.

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5.4.2. When close output relay
High limit „HI“ –the relay closes when measured value exceeds preset „high limit” for longer
time than preset „delay time“. Relay goes open when measured value decrease under „high limit“
value minus the „hysteresis” value. See example.
High limit „HI“
Delay [s]
Hysteresis
Low limit „Lo“ –the relay closes when measured value falls below preset „low limit” for longer
time than preset „delay time“. Relay goes open when measured value exceeds „low limit“value plus
the „hysteresis” value. See example.
Low limit „Lo“
Delay [s]
Hysteresis

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5.4.3. Regulator address setting
Regulator address for preset communication protocol
RS485 network regulator address
5.5. Regulator setting change
5.5.1. Setting with PC and TSensor software
User’s software TSensor provides setting of all regulator parameters. The program is
available free to download at web page www.guilcor.com.Run the TSensor program and follow
the program instructions. Regulator includes hardware write protection of internal setting , new
setting is possible to write only while:
1. during write period press „SET“ key – do requested setting in TSensor software, press „SET“
key on regulator and keep it down, then click on the button „Save Changes“ into TSensor
software and after end of write release „SET“ key, or
2. jumper placed nearby keys is closed (jumper is accessible after demounting of four screws in
the corners of the box and removing the lid ). This jumper is suitable e.g. until device adjustment
is in process and regulator is placed into calibration box and keys are not accessible. Don’t
forget to remove (open) jumper after procedure finish (restore write protection)
TSensor software supports to make the adjustment of the regulator too. This procedure is described
at file „Calibration manual.pdf“ which is installed commonly with the software.
5.5.2. Setting with using regulator keys
If „Actual regulator preset” is displayed (see chapter “Actual regulator preset” at page 10), it is
possible to enter into edit mode and edit displayed value by pressing „SET“ key. Then you are asked
for valid password (PASS). You can edit selected value if right password is entered. During value
editing there is range check executed and edited value is still compared with limits for corresponding
value (range). If inserted value is higher or lower then edited number is automatically changed to its
maximum / minimum value –for possible range see chapter „Technical parameters“ at page 25. Value
can be changed with using „“ and „“ keys. Edited value is switched in “round” -9, -8, -7, …-2, -
1, 0, 1, 2, …8, 9. To edit next number digit press „SET“ key, for moving back to previous digit press
„ESC“ key. Edited value is stored by next „SET“ key pressing. It is possible to cancel editing by
pressing „ESC“ key if necessary. If valid password is once inserted right, then there is possible to edit
next items without asking for password insertion again, till “Actual regulator preset” is left (till actual
measured values are shown). With new entering into edit mode it is necessary to enter Password
again. Default password setting is preset from manufacturer to 0000, password change is possible
into „Extended setting”. During edit mode regulator still works and changes are valid immediately
after its storing –it is NOT necessary to restart regulator.

13
5.5.3. Setting with using of Modbus communication protocol
See chapter 6.1.5 “Output relay alarm condition configuration with using of Modbus
communication protocol 2” at page 21.
5.6. Extended setting mode
During regulator operation it is possible to change parameters available through “Actual regulator
preset” only (see chapter 5.4 at page 10). Rest of regulator parameters are available through
“Extended setting mode”. In this mode regulator does NOT communicate, does NOT do any
measurements and does NOT service output relays. To leave this mode press „ESC“ key and
open jumper nearby keys.
To enter into Extended setting mode do following steps:
1. disconnect power supply
2. demount four screws in the corners of the box and remove the lid
3. closed jumper placed nearby keys
4. press „“ and „“ keys together and keep them down
5. connect power supply to regulator –you should see message „SEL“ on the top line of LCD
and on the bottom line you should see number of Firmware version (e.g. 0404)
6. release „“ and „“ keys – you are into “Extended setting mode” now
Use „“ and „“ keys to inspect each items. If you want to change some shown item then press
„SET“ key, item starts blink. Now you can edit setting with using „“ and „“ keys. To store preset
value press „SET“ key. Press „ESC“ key to leave editing (changing) without save – last stored value
is kept.
Acoustic alarm assign to Relay1
acoustic indication of Relay1 is OFF
close of Relay1 contact starts acoustic
indication
Acoustic alarm assign to Relay2
acoustic indication of Relay2 is OFF
close of Relay2 contact starts acoustic
indication

14
Acoustic alarm deactivation
activated acoustic alarm is possible to
deactivate by pressing „ESC“ key
acoustic alarm is still activated for all time and
it is impossible to deactivate it
Relay response for error
Regulator continuously checks its state during operation. In case error of assigned value
measurement is found then output Relay1 (Relay2):
stays unchanged
(in previous status)
Relay1 switch OFF
Relay1 switch On
stays unchanged
(in previous status)
Relay2 switch OFF
Relay2 switch On
Change of “Password for setting through keys” (PASS)
This item shows actual password setting. It is possible to
change it after „SET“ key pressing. It is number from range -
19999 to +19999
Choice of communication protocol
Choice of communication protocol for communication with master device
protocol Modbus
protocol Advantech-Adam
without check sum
protocol Advantech-Adam
with check sum
password setting

15
Regulator address setting
Regulator address for preset communication protocol
RS485 network regulator address
Communication speed
Communication speed for preset communication protocol
communication speed setting
Visualization of binary inputs
Visualization of inputs is done by three LED diodes. This option defines at which binary input
status should LED diode indication lights –LED diode lights if binary input is OPEN or CLOSED.
LED lights if binary input is OPEN
LED lights if binary input is CLOSED
Binary input 1,
(similarly 2,3)
Temperature unit choice
It is possible to measure temperature at °C or °F. There is shown preset unit. It is possible to change
it after „SET“ key pressing.
preset to °C
preset to °F

16
Barometric pressure unit choice
It is possible to measure barometric pressure at hPa, PSI, inHg, mBar, oz/in2, mmHg, inH2O
and kPa. There is shown preset unit. It is possible to change it after „SET“ key pressing.
preset to hPa
preset to PSI
preset to inHg
preset to mBar
preset to oz/in2
preset to mmHg
preset to inH2O
preset to kPa
Setting of pressure correction for altitude
If is there necessary to read value of barometric pressure corrected with respect to altitude, it is
possible to set corresponding pressure offset for this altitude. It is possible to change it after “SET”
key pressing. Pressure correction value is then automatically added to measured pressure value. See
chapter “Error States of the device”at page 24, Error 2.
correction for altitude
pressure correction value is from
-25,0 to 650,0 hPa
-0,363 to 9,427 PSI
-0,74 to 9,19 inHg
-25,0 to 650,0 mBar
-5,8 to 150,8 oz/in2
-18,8 to 487,5 mmHg
-10,0 to 261,0 inH2O
-2,5 to 65 kPa
.
Show temperature at LCD display
This item provides to choice if actual measured temperature may be displayed at LCD display or
not. It is possible to change it after „SET“ key pressing.
show value on LCD
don’t show value on LCD

17
Show relative humidity at LCD display
This item provides to choice if actual measured relative humidity may be displayed at LCD display
or not. It is possible to change it after „SET“ key pressing.
show value on LCD
don’t show value on LCD
Show computed value at LCD display
This item provides to choice if actual computed value may be displayed at LCD display or not.
There is shown the name of computed value on the top LCD line –see “Computed value selection“
below. It is possible to change it after „SET“ key pressing.
show value on LCD
don’t show value on LCD
Show barometric pressure at LCD display
This item provides to choice if actual barometric pressure may be displayed at LCD display or not.
It is possible to change it after „SET“ key pressing.
show value on LCD
don’t show value on LCD
Computed value selection
It shows the actually selected computed value name. It is possible to change it after „SET“ key
pressing. There is possible choice one of the following computed values:
dew point temperature
absolute humidity
mixing ratio
specific humidity

18
specific enthalpy
5.7. Restore to „Factory default“
This item provides regulator restoring to factory setting. Press „SET“ key, select „YES“ and
confirm it by pressing of „SET“ key. It reset regulator parameters to following values:
communication protocol: Modbus RTU
regulator address: 1
communication speed: 9600Bd, no parity, 2 stop bits
value assigned to Relay1 and Relay2: none
password for setting through keys: 0000
display: on
value shown at first LCD line: temperature, temperature / pressure, by device type
value shown at second LCD line: relative humidity / dew point temperature
temperature unit: °C
pressure unit: hPa
correction for altitude: 0 hPa (absolute pressure)
computed value preset: dew point temperature
restore to factory default
6. Description of communication protocols
Detailed description of each communication protocols including examples of communication is
available into document “Description of communication protocols”, which is available to download
at www.guilcor.com, see detailed description of appropriate device type.
After switching ON the power of the device it can last up to 3 s before the device starts to
communicate and measure !!!

19
6.1. Modbus RTU
Control units communicate on master-slave principle in half-duplex operation. Only master can
send request and only addressed device responds. During sending of request no other slave station
should respond. During communication, data transfer proceeds in binary format. Each Byte is sent as
eight bit data word in format: 1 start bit, data word 8 bit (LSB first), 2 stop bits
1
, without parity.
Device supports communication speed from 110Bd to 115200Bd.
Sent request and response have syntax: ADDRESS OF DEVICE –FUNCTION –Modbus CRC
6.1.1. Supported functions
03 (0x03): Reading of 16-bit registers (Read Holding Registers)
04 (0x04): Reading of 16-bit input gates (Read Input Registers)
06 (0x06): Setting of one 16-bit register (Write Register)
16 (0x10): Setting of more 16-bit registers (Write Multiple Registers)
6.1.2. Jumper
Jumper (placed nearby keys) is accessible after demounting of four screws in the corners of the
box and removing the lid. If communication protocol Modbus is selected the function of jumper is
as follows:
Jumper opened –device memory is protected from writing, from device side it is only enabled
to read measured value, writing to memory is disabled (no change of settings is enabled)
Jumper closed –writing to regulator memory is enabled
6.1.3. Modbus registers of the regulator
Variable
Unit
Address
[hex]X
Address
[dec]X
Format
Size
Status
measured temperature
[°C/°F]*
0x0031
49
Int*10
BIN16
R
measured relative humidity
[%]
0x0032
50
Int*10
BIN16
R
computed value*
0x0033
51
Int*10
BIN16
R
Relay1 status [0/1] (Alarm 1)
[-]
0x003B
59
Int
BIN16
R
Relay2 status [0/1](Alarm 2)
[-]
0x003C
60
Int
BIN16
R
binary input 1 status [0/1]
[-]
0x003D
61
Int
BIN16
R
binary input 2 status [0/1]
[-]
0x003E
62
Int
BIN16
R
binary input 3 status [0/1]
[-]
0x003F
63
Int
BIN16
R
status of all binary inputs
(bit0, 1, 2)
[-]
0x0008
8
Int
BIN16
R
status word (described below)
[-]
0x0007
7
Int
BIN16
R
device serial number Hi
[-]
0x1035
4149
BCD
BIN16
R
device serial number Lo
[-]
0x1036
4150
BCD
BIN16
R
firmware version Hi
[-]
0x3001
12289
BCD
BIN16
R
firmware version Lo
[-]
0x3002
12290
BCD
BIN16
R
device address
[-]
0x2001
8193
Int
BIN16
R/W**
communication speed code
[-]
0x2002
8194
Int
BIN16
R/W**
1
Device sends two stop bits, for receive one stop bit is enough.

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Addition for AR006693 regulators with barometric pressure measurement:
Variable
Unit
Address
[hex]X
Address
[dec]X
Format
Size
Status
barometric pressure
hPa
0x0034
52
Int*10
BIN16
R
PSI
Int*1000
inHg
Int*100
mBar
Int*10
oz/in2
Int*10
mmHg
Int*10
inH2O
Int*10
kPa
Int*100
Legend:
* depends on device setting (by User´s software)
Int*10 register is in format integer *10 (likewise *100, *1000)
R register is designed only for reading
W** register is designed for writing, but direct write is not available, for details see
description of communication protocols
x at transmit are register addresses indexed from zero - „zero based addressing“.
For example „measured temperature“ with Modbus address 0x31 is physically sent
along data bus as value 0x30. You make sure of correct addressing with the aid of
Master device documentation or experimentally (e.g. for „measured temperature“ try
to use address 0x31 or 0x30).
Status word: 16b value return, bite description:
Bit0 0/1 jumper open/closed
Bit1 - unused
Bit2 0 always 0
Bit3 0/1 Relay1 open/closed
Bit4 0/1 Relay2 open/closed
Bit5 0/1 internal acoustic alarm status
Bit6 0/1 binary input 1 status
Bit7 0/1 binary input 1 status
Bit8 0/1 binary input 1 status
Bit9 to 15 unused
Note: In case there is a need for reading of measured values from the device with higher
resolution than one decimal, measured values in device are stored also in „Float“ format, which
is not directly compatible with IEEE754.
6.1.4. Far controlling of output relays status
2
There is possible to control output relay status (open/close) with using of Modbus communication
protocol. To this function enable, there is necessary to assign one of following options to relay:
FAR0 –„Far condition 0“, it means, after power up output relay will be open, or
FAR1 –„Far condition 1“, it means, after power up output relay will be close.
2
This function is available from firmware version 04.06. If older firmware used, update your firmware or contact device’s
distributor.