ARMANO PAXd User manual

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Operating Instructions
PAXd – Display
B08-590
09/22
Information on This Operating Instruction
This manual is not a stand-alone document. It applies
only in connection with our operating instruction
B08-500 for resistance thermometers and thermo-
couples as well as operating instruction B08-505 for
the operation in explosion-hazardous areas.
This manual contains important information on the
safe operation of the device. Before taking the device
into operation, this manual has to be read and under-
stood by qualied personnel.
If you have any problems or questions, please contact
your supplier or contact us directly at:
ARMANO Messtechnik GmbH
Location Beierfeld
Am Gewerbepark 9 • 08344 Grünhain-Beierfeld
Tel.: [phone] – 0 • Fax: [phone] – 545
[e-mail]
Location Wesel
Manometerstraße5 • 46487 Wesel-Ginderich
Tel.: [phone] – 0 • Fax: [phone]
[email protected]om
1. Optical Buttons 2
2. Using the Optical Buttons 2
3. Display 2
3.1 Display Views 2
4. Device and Sensor Status Indication 4
5. Display Menu 4
5.1 Display 8
5.2 Tags 8
5.3 Calibration 9
5.4 Simulation 10
5.5 Sensor 11
5.6 HART 11
5.7 Write Protection 12
5.8 Language 12
5.9 HART Version 13
6. Scrolling Help Text 14
6.1 Available Units 16
7. Programming 18
7.1 HART Modem 18
7.2 HART Communicator 18
8. Changing the HART Protocol Version 19
9. Connection of Transmitters
in Multidrop Mode 19
10. Abbreviations Used 20
Contents

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Operating Instructions
PAXd – Display
1. Optical Buttons
The user interface features 3 optical buttons: , 2
and . The buttons can be operated both with and
without gloves1). The buttons are insensitive to interfer-
ence from ambient light sources and other measuring
instruments (e.g. other PAXd devices mounted in close
proximity).
Additionally, the optical buttons are adaptive, meaning
that they will adapt to wear and e.g. dirt left on the sur-
face. The buttons work both with and without the front
cover mounted.
If a rapid increase in optical reection occurs, e.g. from
mounting the cover or from dust/ dirt on the glass, the
buttons may be activated. If a keystroke is detected
for a period of more than 70 seconds, it is assumed to
be an erroneous keystroke and the adaptive function
will re-initialize in order to restore the correct keypad
functionality. Such re-initialization can also be done by
restarting the device.
2. Using the Optical Buttons
The optical buttons are used for operating and pro-
gramming the PAXd. They oer multi-functionality
depending on whether you press them briey or press
and hold them. With the exception of the calibration
and simulation menus (chapter 5 “Display Menu”),
the display will return to the monitoring view if no key-
stroke is registered within one minute.
 in monitoring view: switch to the next pro-
cess variable
other display view: increase the value of the
selected parameter (unless the device is
write-protected)
2in monitoring view: switch to the previous
process variable
other display view: decrease the value of
the selected parameter (unless the device is
write-protected)
accept the selected value and proceed to
the next parameter
Press and hold
gradually increase (scroll) the numeric value
(unless the device is write-protected)
Press and hold
2gradually decrease (scroll) the numeric value
(unless the device is write-protected)
Press and hold
ignore the selected value and return to the
previous parameter
Press and hold
+2unlock the monitoring view and access the
conguration menu2)
The following icons are displayed in the toolbar when
a button is pressed:
button Up is pressed
button Down is pressed
button Enter is pressed
3. Display
The 96 x 64 pixel display can be rotated in 90 degree
increments for easy vertical or horizontal viewing. The
adjustable backlight allows you to view process val-
ues under all lighting conditions without an external
light source and can be congured to ash when an
error occurs. The optional background lighting and
the ashing error backlight can be selected as red or
white, or turned o completely.
3.1 Display Views
The appearance of the display changes to indicate the
status of the PAXd. This allows for easy and intuitive
operation, an ideal status indication and guides you
through the conguration of your device.
1) Dark gloves can lead to reduced sensitivity.
2) If the error colour (chapter 5 “Display Menu”) is set to red or white and the background lighting of the display is ashing, the ashing
backlight is switched o by the rst keystroke.

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Operating Instructions
PAXd – Display
Meaning of the symbols
The toolbar provides information on the status of the
device. Information such as HART communication,
write protection and process value tendency are indi-
cated.
saving the conguration to internal memory
device is locked or write-protected
current process value tendency indicators
external HART communication indicator
internal communication indicator
external HART communication error
Monitoring view
The process value in the congured units can be easily
monitored through the glass of the case. A bargraph
indicates the process variable at a glance. The device
tag is indicated at the top of the display. The device tag
allows easy identication of the process value and can
be changed by pressing the optical buttons or 2. At
the bottom of the display, the symbols show informa-
tion on the current status of the device.
monitoring view
indicated
process
value
process
value
bargraph
device tag
process
value unit
symbols
Programming view
Press and hold the optical buttons or 2to access
the programming view. The programming view guides
you quickly and intuitively through the device setup.
The name of the selected parameter is indicated at the
top of the display, the currently selected value right
below. The value can be changed by pressing the opti-
cal buttons or 2. If applicable, information on per-
missible range and currently congured units are also
indicated. At the bottom, a scrolling help text shows
information on the parameter you are modifying.
programming view
minimum
value
maximum
value
menu name
actual value
scrolling
help text
Diagnostics view
The display can be congured to ash with red or
white background lighting when a sensor or device
error occurs. The display indicates the status/ error
type in large letters and a scrolling help text with fur-
ther information appears. The device tag is indicated
at the top of the display and the toolbar at the bottom
indicates the status of the device. For a detailed de-
scription of the dierent types of displayed diagnostic
messages, please refer to chapter 4 “Device and Sen-
sor Status Indication”.
diagnostics view
scrolling
help text
ashing
error type
indication
device tag
symbols
Conguration
During conguration of the PAXd, you are guided
through all parameters and can select those settings
that are applicable to your application. For each menu,
there is a scrolling help text that automatically appears
in the display. The conguration is carried out via three
optical buttons. When the conguration is complete or
the display time has expired, the display returns to the
monitoring view.

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Operating Instructions
PAXd – Display
4. Device and Sensor Status Indication
The PAXd is able to indicate diagnostic information for
the sensors and the device. These diagnostics can be
divided into 4 categories: sensor status, sensor error,
device status and device error.
Sensor status
sensor 1 exceeds upper sensor limit IN.HI1)
sensor 1 exceeds lower sensor limit IN.LO1)
sensor 2 exceeds upper sensor limit IN.HI1)
sensor 2 exceeds lower sensor limit IN.LO1)
CJC sensor exceeds upper CJC sensor limit IN.HI1)
CJC sensor exceeds lower CJC sensor limit IN.LO1)
Sensor error
sensor 1 error SE1.ER2)
sensor 2 error SE2.ER2)
CJC sensor error CJC.ER2)
internal temperature sensor error CJC.ER
Device status
conguration is resynchronised SYNC.DEV3)
new device is connected and
conguration is updated
NEW.DEV3)
last process calibration failed CA.ER4)
Device error
A/D converter error ADC.ER5)
EEPROM memory error EE.ER5)
RAM error RA.ER5)
ash memory error FL.ER5)
exception error during code execution SW.ER5)
internal communication error COM.ER5)
5. Display Menu
Exiting the monitoring view allows you to congure the
PAXd with the optical buttons (chapter 2 “Using the
Optical Buttons”). The display menu is divided into two
sections: basic conguration and advanced congu-
ration. The advanced conguration is separated into
nine sections: display, tags, calibration, simulation,
sensor, HART, write protection, language and HART
version.
If a write protection PIN other than 0000 was set, the
correct PIN code must be entered to proceed to the
desired conguration. The PIN code 2008 will always
grant access to the menu.
The menu may be temporarily locked when it is receiv-
ing a conguration on the HART interface or when it
is synchronising conguration parameters with the
internal device.
If a PIN code is activated, the menu can be viewed, but
conguration changes and saving the conguration is
not possible.
It is possible to change the write protection status (en-
abled /disabled), but the correct write protection pass-
word must be entered when prompted.
1) The scrolling help text informs you about the aected sensor.
2) Check the wiring and replace the sensor if necessary.
3) This message disappears after a few seconds and the display changes to monitoring view.
4) Perform a new process calibration or reset the calibration to x the error chapter 5.1 “Display”.
5) A device malfunction has occurred. To x this error, restart the device or recongure it via the display.
If the error still persists, it will reappear and the device may need to be replaced.

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Operating Instructions
PAXd – Display
Power up
Sensor 1 - °C
123.45°C
Device tag
0000
PIN code
Txt 76
9999
0000
Yes
Adv Setup?
Txt 2
No
Yes
COM.ER
Txt 100
SW.ER
FL.ER
EE.ER
ADC.ER
RA.ER
COM.ER
SE1.ER
Txt 100
NEW.DEV
SYNC.DEV
SE1.ER
*19
SE2.ER*19
CJC.ER*19
CA.ER
*19
IN.HI
IN.LO
 2 2
Device tag Device tag
3 3
*17
*1
*18
HART
Setup
Txt 4
Display
Tags
Calibration
*15
Simulation
*15
Sensor
HART
Write-protect
Language
HART revision
*24
 2
3
2
2
*28
7501V111-UK 27
Display menu
Exiting the monitor view allows you to configure the 7501, using the optical buttons (see the section Operating the optical
buttons). The display menu is divided into 2 sections: Basic configuration and Advanced configuration. The advanced
configuration menu is sub-divided into 9 sections: Display, Tags, Calibration, Simulation, Sensor, HART, Write-protect,
Language and HART Revision.
If the 7501 menu has been PIN code-protected by setting a PIN code different from 0000 in the display menu, the correct PIN
code must be entered to proceed to the desired configuration menu. The code 2008 will always give access to the menu.
The menu can be temporarily locked because it is receiving a configuration on the HART interface or because it is
synchronizing configuration parameters with the internal device.
If the 7501 has been write-protected it is still possible to proceed to the menu, but no changes can be made, and it is not
possible to save the configuration.
It is possible to change the write-protection state (enabled/disabled), but the correct write-protect password must be entered
when prompted.
If no keys are pressed for 60 s in any menu
(except for Sim and Cal), no parameters are
saved and the ”Monitor” menu is shown.
If Display Scaling is enabled, Display Scaling
value is also available, and is displayed by
default on the Monitor view.
*1
*17 Will be forced into this state if any device
error occurs (from any other menu).
Warning state: will be forced into this state
if sensor error or overrange is present. Only
from ”Monitor” menu.
*18 Only shown if change of protocol is possible.
*24
First long press of and 2simultaneously
will stop backlight flash but not exit view.
Second long press will enter configuration
menu (if allowed).
*19
No - continued on the
next page
and 2toggles the
process variable shown
in line 2 and 3.
(The value configured
in display setup is
restored after 30
seconds.)
Continued on
page 30
Correct
Long
press
Long
press
Yes
Only shown if Write-protection is disabled.
*15
Only shown if pin-code is > 0000
*28
8

 








If no keys are pressed for 60 s in any menu (except for Sim and Cal), no parameters are saved and the monitoring menu is shown.
If display scaling is enabled, the display scaling value is indicated, and visible in the monitoring view by default.
Only shown if write protection is disabled.
Will be forced into this state if any device error occurs (from any other menu).
Warning state: will be forced into this state if sensor error or overrange is present. Only from monitoring menu.
First long press of and 2simultaneously will stop backlight ash but not exit view.
Second long press will enter conguration menu (if allowed).
Only shown if change of protocol is possible.
Only shown if PIN code is > 0000.

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Operating Instructions
PAXd – Display
Single Sens
Sensor Func
Txt 3
Single Sens
Dual Sens
3-wire
Connection
Txt 7
2-wire
3-wire
4-wire
Temperature
Input Type
Txt 69
Voltage
Linear Res
Temperature
5
S1 Wire Res
Txt 8
100.0
0.0
0
S2 Wire Res
Txt 8
100.0
0.0
 2 2 2 2 2
Differential
Meas setup
Txt 68
Average
Differential
 2
Pt100
Pt Type
Txt 6
Pt50
Pt100
Pt200
Pt500
Pt1000
Custom
Pt
Sensor Type
Txt 70
Pt
Ni
TC
 2
 2
Ni100
Ni Type
Txt 71
Ni50
Ni100
Ni120
Ni1000
 2
TC K
TC Type
Txt 72
TC B
TC E
TC J
TC K
TC L
TC N
TC R
TC S
TC T
TC U
TC W3
TC W5
TC Lr
Custom
Ext Pt100
CJC Type
Txt 10
Internal
Ext Pt100
Ext Ni100
Fixed
 2 2
0
CJC Wire Res
Txt 8
100.0
0.0
 2
3
Pt
Ni
TC
3
3
3
3
3
3
3 3
*3 *5*4
Ohm
Res Type
Txt 5
Ohm
kOhm
 2
3
mV
Voltage Type
Txt 5
uV
mV
V
 2
3
28 7501V111-UK
Basic configuration
*4 Only shown if 2-wire sensor connection is
selected.
Only shown if single sensor function is
selected.
*3
Only shown if dual sensor function is
selected.
*5 Not available in
HART 5 mode
If connection is 3- or 4-wire, the max. cable
resistance is set to 10 Ohm.
This can be overwritten in the Advanced Menu.
Ext Pt 100 / Ni 100
Internal / Fixed
Single sensor
Dual sensor
Temperature
Voltage
Lin. R
Basic conguration
Only shown if single sensor function is selected.
Only shown if 2-wire sensor connection is selected.
Only shown if dual sensor function is selected.
Not available in
HART 5 mode

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Operating Instructions
PAXd – Display
Single Sens
Sensor Func
Txt 3
Single Sens
Dual Sens
3-wire
Connection
Txt 7
2-wire
3-wire
4-wire
Temperature
Input Type
Txt 69
Voltage
Linear Res
Temperature
5
S1 Wire Res
Txt 8
100.0
0.0
0
S2 Wire Res
Txt 8
100.0
0.0
 2 2 2 2 2
Differential
Meas setup
Txt 68
Average
Differential
 2
Pt100
Pt Type
Txt 6
Pt50
Pt100
Pt200
Pt500
Pt1000
Custom
Pt
Sensor Type
Txt 70
Pt
Ni
TC
 2
 2
Ni100
Ni Type
Txt 71
Ni50
Ni100
Ni120
Ni1000
 2
TC K
TC Type
Txt 72
TC B
TC E
TC J
TC K
TC L
TC N
TC R
TC S
TC T
TC U
TC W3
TC W5
TC Lr
Custom
Ext Pt100
CJC Type
Txt 10
Internal
Ext Pt100
Ext Ni100
Fixed
 2 2
0
CJC Wire Res
Txt 8
100.0
0.0
 2
3
Pt
Ni
TC
3
3
3
3
3
3
3 3
*3 *5*4
Ohm
Res Type
Txt 5
Ohm
kOhm
 2
3
mV
Voltage Type
Txt 5
uV
mV
V
 2
3
28 7501V111-UK
Basic configuration
*4 Only shown if 2-wire sensor connection is
selected.
Only shown if single sensor function is
selected.
*3
Only shown if dual sensor function is
selected.
*5 Not available in
HART 5 mode
If connection is 3- or 4-wire, the max. cable
resistance is set to 10 Ohm.
This can be overwritten in the Advanced Menu.
Ext Pt 100 / Ni 100
Internal / Fixed
Single sensor
Dual sensor
Temperature
Voltage
Lin. R
0
Fix CJC val
Txt 12
-40.0
135.0
 2
200
Max Diff
Txt 15
-7000
7000
(Sensor specific)
0
Input Low
Txt 21
0
6975
(Sensor specific)
150
Input High
Txt 22
25
7000
(Sensor specific)
 2 2  2
°C
Temp Unit
Txt 5
°C
°F
°R
K
 2
0.4
PV Resp
Txt 9
1.0
60.0
0.4
S1 Resp
Txt 9
1.0
60.0
 2 2
0.4
S2 Resp
Txt 9
1.0
60.0
 2
0.4
Avg Resp
Txt 9
1.0
60.0
0.4
Diff Resp
Txt 9
1.0
60.0
 2 2
3.50
Out Rng Lo
Txt 23
3.50
23.00
23.00
Out Rng Hi
Txt 24
3.50
23.00
 2 2
3.50
Out Lim Lo
Txt 25
3.50
23.00
23.00
Out Lim Hi
Txt 26
3.50
23.00
 2 2
Yes
Save ?
Txt 16
23.00
Out Broken
Txt 28
3.50
23.00
23.00
Out Shorted
Txt 29
3.50
23.00
 2 2
Broken
Sens Error
Txt 27
Disabled
Broken
Shorted
*23
Both
*23
 2
3
3
3
3
*8 *9
*5 *6*7
*6*21
Yes
No
 2
*15
*29 *29 *30 *30
Yes
Disp Scaling?
Txt 82
No
Yes
%
Display Unit
Txt 78
All units
 2
 2
111.11
Decimal Pt
Txt 79
11111
1111.1
111.11
11.111
1.1111
 2
0.00
Display Low
Txt 80
-999.99
999.99
100.00
Display High
Txt 81
-999.99
999.99
 2 2
3
*30
3
0.0
Temp Low
Txt 21
-200.0
850.0
150.0
Temp High
Txt 22
-200.0
850.0
 2 2
*29 *29
7501V111-UK 29
Not available in
HART 7 mode
*6 Only shown if differential sensor function is
selected.
*8 Only shown if sensor breakage detection is
activated.
Only shown if average sensor function is
selected.
*7
Only shown if sensor shortage detection is
activated.
*9
Only shown if dual sensor function is
selected.
*5
*21 Only shown if TC, fixed CJC is selected.
*23 Selection not available for Voltage Input Type
and TC Sensor Type with internal/fixed CJC.
Not available in
HART 5 mode
If HART revision = 5, units for S1, S2, Average and
Dierence are forced to either mV or Ohm.
Units for CJC are forced to the same units as S1.
If S1 is not = Temperature Type, Unit is set to °C.
All device variable units can be overwritten in the
Advanced menu.
“Monitor”
Only shown if Write-protection is disabled.
*15
*29 Only shown if Temperature input is selected.
*30 Only shown if Temperature input is NOT
selected.
Yes
NoNo
Only shown if dual sensor function is selected.
Only shown if dierential sensor function is selected.
Only shown if average sensor function is selected.
Only shown if sensor breakage detection is activated.
Only shown if sensor shortage detection is activated.
Only shown if write protection is disabled.
Only shown if xed CJC is selected.
Selection not available for voltage input type and TC sensor type with internal/xed CJC.
Only shown if temperature input is selected.
Only shown if temperature input is NOT selected.
Not available in
HART 5 mode
Not available in
HART 7 mode

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Operating Instructions
PAXd – Display
Yes
L Tag Setup?
Txt 64
No
Yes
Text
Long Tag
Txt 38
(Char list)
Yes
Save ?
Txt 16
 2 2
Yes
Tag Setup?
Txt 65
No
Yes
Text
Tag
Txt 39
(Char list)
 2 2
Yes
Msg Setup?
Txt 67
No
Yes
Text
Message
Txt 35
(Char list)
 2 2
Yes
Descr Setup?
Txt 66
No
Yes
Text
Descriptor
Txt 34
(Char list)
 2 2
3
*16 *16 *16 *16
Yes
No
 2
*15
White
Backlight
Txt 42
Off
White
Red
White
Error color
Txt 73
Off
White
Red
3
Contrast
Txt 43
0
9
 2 2 2
% Range
Bar graph
Txt 44
Loop Curr
% Range
Sensor 2
Monitor
Txt 45
Sensor 1
Sensor 2
*5
CJC Sensor
Average
*7
Differential
*6
Loop Curr
% Range
 2 2
3
*25
Yes
Save ?
Txt 16
Yes
No
 2
0000
PIN code
Txt 77
9999
0000
 2
*15
*31
30 7501V111-UK
Display
Tags
*25 Not shown if backlight is off.
Only shown if ”Yes” was selected in the
previous menu.
*16
*6 Only shown if differential sensor function
is selected.
Only shown if dual sensor function is
selected.
*5
Only shown if average sensor function is
selected.
*7
“Monitor”
“Monitor”
Only shown if Write-protection is disabled.
*15
Only shown if Display Scaling input is
disabled.
*31
5.1 Display
5.2 Tags
Only shown if dual sensor function is selected.
Only shown if dierential sensor function is selected.
Only shown if average sensor function is selected.
Only shown if write protection is disabled.
Only shown if “Yes” was selected in the previous menu.
NOT shown if backlight is o.
Only shown if display scaling input is disabled.

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Operating Instructions
PAXd – Display
5.3 Calibration
(only if write protection is disabled)
The device can be process-calibrated at two points to match a given input signal. A low input signal (not necessar-
ily 0 %) is applied and the actual value is entered. Then a high input signal (not necessarily 100 %) is applied and
the actual value is entered. If you accept the calibration (by selecting Yes in the save menu), the device will operate
according to the new settings. You can reset the device to factory calibration points by selecting reset calibration
in the calibration menu. Please note that the programming mode will not time out while performing a calibration.
Sensor 2
Calibration
Txt 53
Sensor 1
Sensor 2 *5
CJC sensor
Loop Curr
*26
 2
Do Calib
S2 Calib
Txt 54
Reset Calib
Do Calib
 2
Do Calib
Loop Calib
Txt 54
Reset Calib
Do Calib
 2
3
*5
Set S2 Low
Txt 74
0.0
S2 Cal Low
Txt 55
-200°C
850°C
 2
*27 *14
4.00
Calib 4 mA
Txt 55
3.50 mA
23.00 mA
20.00
Calib 20 mA
Txt 56
3.50 mA
23.00 mA
 2 2
*12 *13
Do Calib
S1 Calib
Txt 54
Reset Calib
Do Calib
 2
Do Calib
CJC Calib
Txt 54
Reset Calib
Do Calib
 2
Set S1 Low
Txt 74
0.0
S1 Cal Low
Txt 55
-200°C
850°C
 2
*27 *14
Set CJC Low
Txt 74
0.0
CJC Cal Low
Txt 55
-40.0
135.0
 2
*27 *14
3
3
3
3
3
3
3
3
Set S2 High
Txt 75
*27
100.0
S2 Cal High
Txt 56
-200°C
850°C
 2
*14
Set S1 High
Txt 75
*27
100.0
S1 Cal High
Txt 56
-200°C
850°C
 2
*14
Set CJC High
Txt 75
*27
100.0
CJC Cal Hi
Txt 56
-40.0
135.0
 2
*14
*26
7501V111-UK 31
Calibration
(only if Write-protection is disabled)
The device can be process-calibrated in two points to fit a given input signal. A low input signal (not necessarily 0%) is applied
and the actual value is entered. Secondly a high input signal (not necessarily 100%) is applied and the actual value is entered.
If you accept to use the calibration (by selecting Yes in the Save menu) the device will work according to the new adjustments.
You can return the device to factory calibration points by selecting Reset Calibration from the Calibration menu. Please note
that while performing a calibration the programming mode will not time out.
Only shown if dual sensor function is
selected.
*5
*13 20 mA fixed output configured internally.
4 mA fixed output configured internally.
*12
Default value is current input value.
No timeout in this menu.
*14
*26 Not possible if Loop Current is not active.
*27 No timeout in this menu.
Not available in
HART 5 mode
Sensor 2
Loop Curr
Sensor 1
CJC sensor
Reset Calib
Do Calib
Reset Calib
Do Calib
Reset Calib
Do Calib
Reset Calib
Do Calib
“Monitor”
“Monitor”
“Monitor”
“Monitor”
“Monitor”
“Monitor”
“Monitor” “Monitor”
Only shown if dual sensor function is selected.
4 mA xed output congured internally.
20 mA xed output congured internally.
Default value is current input value. No timeout in this menu.
Not possible if loop current is not active.
No timeout in this menu.
Not available in
HART 5 mode

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Operating Instructions
PAXd – Display
5.4 Simulation
(only if write protection is disabled)
The PAXd allows you to simulate process values in the simulation menu. By using the optical buttons and 2,
the simulated value can be increased or decreased (chapter 2 “Using the Optical Buttons”). Please note that the
display will not time out while performing a calibration.
Sensor 2
Simulation
Txt 57
Sensor 1
Sensor 2
*5
CJC Sensor
Average
*5
Differential
*5
Loop Curr
*26
 2
20.0
S2 Simul
Txt 59
-200.0
850.0
 2
20.0
Avg Simul
Txt 61
-200.0
850.0
 2
3
20.00
Loop Test
Txt 63
3.5 mA
23.0 mA
 2
20.0
S1 Simul
Txt 58
-200.0
850.0
 2
20.0
CJC Simul
Txt 60
-40.0
135.0
 2
20.0
Diff Simul
Txt 62
-200.0
850.0
 2
3
3
3
3
3
3
32 7501V111-UK
Simulation
(only if Write-protection is disabled)
The 7501 allows you to simulate process values by entering the simulation menu. Using the and 2optical buttons, the
simulated value can be increased and decreased (see the section Operating the optical buttons). Please note that while
performing a calibration the display will not time out.
Only shown if dual sensor function is
selected.
*5 Not available in
HART 5 mode
*26 Not possible if Loop Current is not active.
Sensor 2
Average
Sensor 1
CJC sensor
Dierential
Loop Test
“Monitor”
“Monitor”
“Monitor”
“Monitor”
“Monitor”
“Monitor”
Only shown if dual sensor function is selected.
Not possible if loop current is not active.
Not available in
HART 5 mode

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Operating Instructions
PAXd – Display
mV
PV Unit
Txt 5
All units
mV
S1 Unit
Txt 5
All units
 2 2
mV
S2 Unit
Txt 5
All units
°F
CJC Unit
Txt 5
°C
°F
K
°R
Yes
Save ?
Txt 16
 2 2
mV
Avg Unit
Txt 5
All units
mV
Diff Unit
Txt 5
All units
 2 2
Sensor 2
Assign TV
Txt 19
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
Sensor 2
Assign QV
Txt 20
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
 2 2
Sensor 2
Assign PV
Txt 17
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
Sensor 2
Assign SV
Txt 18
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
 2 2
3
*5*5 *5
0.4
CJC Resp
Txt 9
60.0
1.0
 2
*20
*22
0
Max Wire Res
Txt 14
100.0
0.0
 2
Yes
No
 2
*15
Req preamb
Dev info
Txt 50
Req Preamb
SW Rev
HW Rev
Device ID
Manuf ID
HART Rev
5
Resp Preamb
Txt 31
5
20
 2 2
0
Poll Addr
Txt 32
0
63
Yes
Loop Enable
Txt 33
No
Yes
Yes
Save ?
Txt 16
 2 2
3
*11
Yes
No
 2
0
Assembly Nr
Txt 37
0
16777215
01-06-2015
Date
Txt 36
DD-MM-YYYY
 2 2
*15
7501V111-UK 33
Sensor
The sensor menu allows you to make more detailed configuration of your sensor values, which are not available in the basic
configuration menu. These involve selecting from a large amount of process variable units, changing the sensor assignment to
PV, SV, TV and QV and specifying the CJC response time. Please note that performing a basic configuration (see the section
Basic configuration) will overwrite these changes.
HART
Under this menu you will find special parameters pertaining to HART. It will provide you with general information regarding
number of request preambles, software and hardware revisions, device and manufacture IDs and HART revision. The menu
will also allow you to specify number of response preambles, polling address, assembly number and date.
Only shown if dual sensor function is
selected.
*5
*11 Range is 0...15 in HART 5 mode.
Values may be owerwritten when normal
menu is saved.
*20
Only shown if 3- or 4-wire connection is
selected.
*22 Not available in
HART 7 mode
Not available in
HART 5 mode
“Monitor”
“Monitor”
Only shown if Write-protection is disabled.
*15
5.5 Sensor
The sensor menu allows you to perform a detailed conguration of your sensor values, which are not available in
the basic conguration menu. This includes selecting from a large number of process variable units, changing the
sensor assignment to PV, SV, TV and QV and specifying the CJC response time. Please note that when performing
a basic conguration (chapter 5 “Display Menu”), these changes will be overwritten.
mV
PV Unit
Txt 5
All units
mV
S1 Unit
Txt 5
All units
 2 2
mV
S2 Unit
Txt 5
All units
°F
CJC Unit
Txt 5
°C
°F
K
°R
Yes
Save ?
Txt 16
 2 2
mV
Avg Unit
Txt 5
All units
mV
Diff Unit
Txt 5
All units
 2 2
Sensor 2
Assign TV
Txt 19
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
Sensor 2
Assign QV
Txt 20
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
 2 2
Sensor 2
Assign PV
Txt 17
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
Sensor 2
Assign SV
Txt 18
Sensor 1
Sensor 2 *5
CJC Sensor
Average *5
Differential
*5
 2 2
3
*5*5 *5
0.4
CJC Resp
Txt 9
60.0
1.0
 2
*20
*22
0
Max Wire Res
Txt 14
100.0
0.0
 2
Yes
No
 2
*15
Req preamb
Dev info
Txt 50
Req Preamb
SW Rev
HW Rev
Device ID
Manuf ID
HART Rev
5
Resp Preamb
Txt 31
5
20
 2 2
0
Poll Addr
Txt 32
0
63
Yes
Loop Enable
Txt 33
No
Yes
Yes
Save ?
Txt 16
 2 2
3
*11
Yes
No
 2
0
Assembly Nr
Txt 37
0
16777215
01-06-2015
Date
Txt 36
DD-MM-YYYY
 2 2
*15
7501V111-UK 33
Sensor
The sensor menu allows you to make more detailed configuration of your sensor values, which are not available in the basic
configuration menu. These involve selecting from a large amount of process variable units, changing the sensor assignment to
PV, SV, TV and QV and specifying the CJC response time. Please note that performing a basic configuration (see the section
Basic configuration) will overwrite these changes.
HART
Under this menu you will find special parameters pertaining to HART. It will provide you with general information regarding
number of request preambles, software and hardware revisions, device and manufacture IDs and HART revision. The menu
will also allow you to specify number of response preambles, polling address, assembly number and date.
Only shown if dual sensor function is
selected.
*5
*11 Range is 0...15 in HART 5 mode.
Values may be owerwritten when normal
menu is saved.
*20
Only shown if 3- or 4-wire connection is
selected.
*22 Not available in
HART 7 mode
Not available in
HART 5 mode
“Monitor”
“Monitor”
Only shown if Write-protection is disabled.
*15
5.6 HART
In this menu you will nd special parameters for HART. It provides you with general information on a number of
request preambles, software and hardware version, device and manufacturer ID and HART version. The menu
also allows you to set the number of response preambles, polling address, assembly number and date.
Only shown if dual sensor function is selected.
Range is 0...15 in HART 5 mode.
Only shown if write protection is disabled.
Values may be overwritten when normal menu is saved.
Only shown if 3- or 4-wire connection is selected.
Not available in
HART 5 mode
Not available in
HART 7 mode

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Operating Instructions
PAXd – Display
5.7 Write Protection
Here you can select whether to enable or disable write protection using a password. If the write protection is
already enabled, the correct password must be entered to gain access. The password must consist of exactly 8
characters, available in the Latin-1 character set. It protects the device against unauthorized conguration mod-
ications. The device is delivered with disabled write protection. The password 00002008 always grants access
to the write protection menu.
Yes
Save ?
Txt 16
Yes
Enable WP
Txt 47
Yes
No
 2
3
********
New Password
Txt 48
(Char list)
 2
3
3
Yes
No
 2
********
Password
Txt 1
3
(Char list)
 2
Yes
Save ?
Txt 16
Dansk
Language
Txt 41
English
Dansk
Deutsch
Français
Svenska
Italiano
Español
 2
3
Yes
No
 2
*15
Yes
Save ?
Txt 16
HART 7
HART Rev
Txt 51
3
HART 7
HART 5
 2
*24
Yes
No
 2
*15
*2
34 7501V111-UK
Write-protect
Here you can choose to enable or disable write protection using a password. If write-protection is already enabled, the correct
password must be entered to get access. The password must consist of exactly 8 characters, available in the Latin 1 character
set, and will protect the device against unauthorized modifications to the configuration. The device is delivered default with
write-protection disabled. The password 00002008 always allows access to the write-protection menu.
Language
In this menu you can choose between seven different language versions of the help text that will appear in the menu (see the
section Display). You may choose from the following languages: English, Dansk, Deutsch, Français, Svenska, Italiano and
Español.
HART Revision
Changing the HART revision is done from this menu. Select the desired HART revision and press the button. Select Yes to
effect the change in the Save menu. Please note that changing the HART revision will reboot the device, during which time
the display may become blank for a few seconds. If HART 7 is selected the device will appear as 7501 in the HART interface.
If HART 5 is selected the device will appear as 7501H5/5335V2 in the HART interface.
Only shown if change of protocol is possible
*24
“Monitor”
“Monitor”
No
Yes
“Monitor”
Correct
Only shown if Write-protection is disabled.
*15
Only shown if Write-protection is enabled.
*2
5.8 Language
In this menu you can choose from seven dierent language versions for the help text that will appear in the menu
(chapter 5.1 “Display”). The following languages are available: English, Dansk, Deutsch, Français, Svenska,
Italiano and Español.
Only shown if write protection is enabled.
Only shown if write protection is disabled.

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Operating Instructions
PAXd – Display
5.9 HART Version
The HART version is changed via this menu. Select the desired HART version and press the button. Select Yes
to conrm the change in the save menu. Please note that the device will restart when changing the HART version.
During this time, the display will become blank for a few seconds. If HART 7 is selected, the device will appear
as PAXd in the HART interface. If HART 5 is selected, the device will appear as PAXdH5/5335V2 in the HART
interface.
Yes
Save ?
Txt 16
Yes
Enable WP
Txt 47
Yes
No
 2
3
********
New Password
Txt 48
(Char list)
 2
3
3
Yes
No
 2
********
Password
Txt 1
3
(Char list)
 2
Yes
Save ?
Txt 16
Dansk
Language
Txt 41
English
Dansk
Deutsch
Français
Svenska
Italiano
Español
 2
3
Yes
No
 2
*15
Yes
Save ?
Txt 16
HART 7
HART Rev
Txt 51
3
HART 7
HART 5
 2
*24
Yes
No
 2
*15
*2
34 7501V111-UK
Write-protect
Here you can choose to enable or disable write protection using a password. If write-protection is already enabled, the correct
password must be entered to get access. The password must consist of exactly 8 characters, available in the Latin 1 character
set, and will protect the device against unauthorized modifications to the configuration. The device is delivered default with
write-protection disabled. The password 00002008 always allows access to the write-protection menu.
Language
In this menu you can choose between seven different language versions of the help text that will appear in the menu (see the
section Display). You may choose from the following languages: English, Dansk, Deutsch, Français, Svenska, Italiano and
Español.
HART Revision
Changing the HART revision is done from this menu. Select the desired HART revision and press the button. Select Yes to
effect the change in the Save menu. Please note that changing the HART revision will reboot the device, during which time
the display may become blank for a few seconds. If HART 7 is selected the device will appear as 7501 in the HART interface.
If HART 5 is selected the device will appear as 7501H5/5335V2 in the HART interface.
Only shown if change of protocol is possible
*24
“Monitor”
“Monitor”
No
Yes
“Monitor”
Correct
Only shown if Write-protection is disabled.
*15
Only shown if Write-protection is enabled.
*2
Only shown if write protection is enabled.
Only shown if change of protocol is possible.

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Operating Instructions
PAXd – Display
6. Scrolling Help Text
[01] set the correct password
[02] enter advanced setup menu ?
[03] select single sensor functionality
select dual sensor functionality
[04] enter display setup
enter tag settings
enter process calibration
enter simulation mode
enter advanced sensor settings
enter HART settings
enter write protection setting
enter setup language
enter HART revision
[05] select measurement unit
[06] select custom RTD as sensor type
select Pt50 as sensor type
select Pt100 as sensor type
select Pt200 as sensor type
select Pt500 as sensor type
select Pt1000 as sensor type
[07] select 2-wire sensor connection
select 3-wire sensor connection
select 4-wire sensor connection
[08] set actual output resistance in 2 wires
[09] set the response time
[10] select internal CJC sensor
select Pt100 as external CJC sensor
select Ni100 as external CJC sensor
select xed CJC
[12] set xed CJC value
[13] disable sensor 2
enable sensor 2
[14] set maximum output resistance in 2 wires
[15] set the maximum value for individual sensors in
case of dierential measurement
[16] save conguration ?
[17] assign sensor 1 to PV and output loop
assign sensor 2 to PV and output loop
assign CJC sensor to PV and output loop
assign internal temperature to PV and output
loop
assign average measurement to PV and output
loop
assign dierential measurement to PV and out-
put loop
[18] assign sensor 1 to SV
assign sensor 2 to SV
assign CJC sensor to SV
assign internal temperature to SV
assign average measurement to SV
assign dierential measurement to SV
[19] assign sensor 1 to TV
assign sensor 2 to TV
assign CJC sensor to TV
assign internal temperature to TV
assign average measurement to TV
assign dierential measurement to TV
[20] assign sensor 1 to QV
assign sensor 2 to QV
assign CJC sensor to QV
assign internal temperature to QV
assign average measurement to QV
assign dierential measurement to QV
[21] set the lower value at the analogue output
[22] set the upper value at the analogue output
[23] set output current to 0 % of measuring range
[24] set output current to 100 % of measuring range
[25] set the lower limit at the current output
[26] set the upper limit at the current output
[27] disable the sensor error detection
enable the cable break detection at the sensor
enable the short circuit detection at the sensor
enable the short circuit and cable break
detection at the sensor
[28] set the output current in case of cable breakage
[29] set the output current in case of a short circuit
[31] set the number of preambles in HART messages
[32] set the polling address
[33] disable current loop (no analogue output signal)
enable current loop (analogue output signal)
[34] transfer the description to the device
[35] transfer the message to the device
[36] set the user data on the device
[37] set the nal assembly number
[38] transfer long tag number
[39] transfer the tag number
[41] select language
[42] disable the LCD background lighting
select white LCD background lighting
select red LCD background lighting
[43] set LCD contrast
[44] select current loop for bargraph indicator
select % of measuring range for bargraph indica-
tor
[45] select sensor 1 in the process monitoring view
select sensor 2 in the process monitoring view
select CJC sensor in the process monitoring view
select average measurement in the process
monitoring view
select dierential measurement in the process
monitoring view
select current loop in the process monitoring
view
select % of measuring range in the process
monitoring view
[47] enable the write protection
[48] select a new password
[50] minimum number of preambles in requests
software revision level
hardware revision level
device identication
manufacturer identication
HART protocol revisions level
[51] select HART 7 protocol
select HART 5 protocol

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Operating Instructions
PAXd – Display
[53] enter sensor 1 conguration menu
enter sensor 2 conguration menu
enter CJC sensor conguration menu
enter output loops conguration menu
[54] restore default settings
perform process calibration
[55] enter the value for the lower calibration point
[56] enter the value for the upper calibration point
[57] simulate sensor 1 input
simulate sensor 2 input
simulate CJC sensor input
simulate average measurement
simulate dierential measurement
simulate output current loop
[58] set simulation value sensor 1
[59] set simulation value sensor 2
[60] set simulation value CJC sensor
[61] set simulation value average measurement
[62] set simulation value dierential measurement
[63] set simulation value output current loop
[64] edit the long tag number ?
[65] edit the tag number ?
[66] edit the description ?
[67] edit the message ?
[68] select the average value of sensor 1 and sensor 2
select the dierential measurement of sensor 1
and sensor 2
[69] select voltage input
select linear resistance input
select temperature input
[70] select Pt sensor type
select Ni sensor type
select TC sensor type
[71] select Ni50 as sensor type
select Ni100 as sensor type
select Ni120 as sensor type
select Ni1000 as sensor type
[72] select custom TC as sensor type
select TC-B as sensor type
select TC-E as sensor type
select TC-J as sensor type
select TC-K as sensor type
select TC-L as sensor type
select TC-N as sensor type
select TC-R as sensor type
select TC-S as sensor type
select TC-T as sensor type
select TC-U as sensor type
select TC-W5 as sensor type
select TC-W3 as sensor type
select TC-Lr as sensor type
[73] disable LCD error backlight
select white LCD error backlight
select red LCD error backlight
[74] apply value for the lower calibration point and
allow it to stabilise
[75] apply value for the upper calibration point and
allow it to stabilise
[76] enter PIN code for menu access
[77] select PIN code for menu access
(0000 disabled)
[78] select display unit
[79] select position of the decimal point
[80] set lower display measurement range
[81] set upper display measurement range
[82] use display scaling (overwrites the congured
monitoring view)
[100]
SW.ER exception error during code execution
FL.ER FLASH memory error
EE.ER EEPROM memory error
ADC.ER A/D converter error
RA.ER RAM error
COM.ER internal communication error
NEW.DEV new device detected – conguration is
being updated – please wait
CONF.ER conguration is being re-synchronised
– please wait
SE1.ER error sensor 1, check the connection
and replace if necessary
SE2.ER error sensor 2, check the connection
and replace if necessary
CJC.ER error CJC sensor, check the connection
and replace if necessary
CJC.ER error internal temperature sensor
CA.ER last process calibration not successful
– please retry
IN.HI / IN.LO sensor 1 out of range
IN.HI / IN.LO sensor 2 out of range
IN.HI / IN.LO CJC sensor out of range
IN.HI / IN.LO sensor 1 or sensor 2 measurement out
of range

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Operating Instructions
PAXd – Display
6.1 Available Units
The following table lists the available units. Please note that most units are only available from the sensor menu or
from the display scaling menu (chapter 5 “Display Menu”).
Sensor
menu #
HART
#
Display
scaling
menu #
Tex t Types
0 32 0 °C temperature units
1 33 1 °F
2 34 2 °R
3 35 3 K
4 37 4 Ohm resistance units
5 163 5 kOhm
6 240 6 µV voltage units
7 36 7 mV
8 58 8 V
— — 9 kV
— 171 10 µA current units
9 39 11 mA
— 172 12 A
— — 13 kA
11 1 15 inH2O pressure units
12 2 16 inHg
13 3 17 ftH2O
14 4 18 mmH2O
15 5 19 mmHg
16 6 20 psi
17 7 21 bar
18 8 22 mbar
19 9 23 g/cm2
20 11 24 Pa
— 174 25 hPa
21 12 26 kPa
22 13 27 torr
23 14 28 atm
24 237 29 MPa
25 17 32 l/min volume ow units
— 131 35 m3/min
26 19 36 m3/h
27 22 38 gal/s
— 16 39 gal/min
28 24 31 l/s
29 25 30 ml/d
30 26 42 ft3/s
31 130 43 ft3/h
32 27 44 ft3/d
33 28 34 m3/s
34 29 37 m3/d
35 121 45 m3n/h
36 132 46 bbl/s
37 134 47 bbl/h
38 135 48 bbl/d
39 136 40 gal/h
40 138 33 l/h
41 235 41 gal/d
Sensor
menu #
HART
#
Display
scaling
menu #
Tex t Types
42 20 57 ft/s velocity units
— 116 58 ft/min
— — 59 ft/h
— — 49 mm/s
43 21 50 m/s
— — 51 m/min
— — 53 ips
44 114 54 in/s
— 115 55 in/min
— — 56 in/h
45 120 52 m/h
46 40 62 gal volume units
47 41 60 l
48 43 61 m3
49 46 67 bbl
50 110 68 bush
51 111 63 yd3
52 112 64 ft3
53 113 65 in3
54 166 66 m3n
55 167 69 ln
56 236 70 hl
57 44 76 ft length units
58 45 71 m
59 47 77 in
60 48 72 cm
61 49 73 mm
— — 74 µm
— — 75 yd
— — 78 mils

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Operating Instructions
PAXd – Display
Sensor
menu #
HART
#
Display
scaling
menu #
Tex t Types
62 50 80 min time units
63 51 79 s
64 52 81 h
65 53 82 d
66 60 83 g mass units
67 61 84 kg
68 62 85 t
69 63 87 lb
70 64 88 ShTon
71 65 89 LTo n
72 125 87 oz
— — 149 mol
73 70 90 g/s mass ow units
74 71 91 g/min
75 72 92 g/h
76 73 93 kg/s
77 75 94 kg/h
78 76 95 kg/d
79 77 96 t/min
80 78 97 t/h
81 79 98 t/d
82 80 99 lb/s
83 82 100 lb/h
84 83 101 lb/d
85 90 102 SGU mass per volume units
86 91 103 g/cm3
87 92 104 kg/m3
88 95 105 g/ml
89 96 106 kg/l
90 97 107 g/l
91 146 108 µg/L
92 147 109 µg/m3
93 54 110 cSt viscosity units
94 55 111 cP
95 69 112 N/m energy (work) units
— — 113 Wh
96 128 114 kW/h
— — 115 MWh
97 162 116 Mcal
— — 117 kJ
98 164 118 MJ
99 165 119 Btu
Sensor
menu #
HART
#
Display
scaling
menu #
Tex t Types
— 175 120 W power units
100 127 121 kW
— 170 122 MW
— — 123 GW
101 129 124 hp
102 141 125 MJ/h
103 142 126 Btu/h
104 117 127 deg/s angular velocity units
105 118 128 rev/s
106 119 129 rpm
— — 133 S conductivity units
— — 134 µS
— — 137 m/s2acceleration unit
10 57 14 % miscellaneous
107 38 130 Hz
108 56 131 µMho
109 59 132 pH
110 66 135 mS/cm
111 67 136 µS/cm
112 68 138 N
113 139 139 ppm
114 143 140 deg
115 144 141 rad
116 148 142 %Cs
117 149 143 Vol%
118 153 144 pF
119 154 145 ml/l
120 155 146 µl/l
121 161 147 %LEL
122 169 148 ppb
123 251 150 <blank>* special units
124 252 151 ?
125 253 152 Spcl
* no characters displayed

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Operating Instructions
PAXd – Display
7. Programming
The PAXd can be congured in one of the following 3 ways:
• via the optical buttons and the display (chapter 5 “Display Menu”),
• with a HART modem and the PC software,
• with a HART-compliant, portable communicator with the PAXd H5 or PAXd H7 DD driver installed.
7.1 HART Modem
Please refer to the following drawing for programming.
7.2 HART Communicator
Please refer to the following drawing for programming. To gain access to product specic commands, the
PAXd H5 / PAXd H7 DD driver must be loaded onto the HART communicator. This can be ordered electronically
from the HART Communication Foundation or from ARMANO.
7501V111-UK 39
Programming
The 7501 can be configured in one of the following 3 ways:
• Via the optical buttons and the display (see the section Display menu).
• With a HART modem and the PReset software.
• With a HART compliant handheld communicator having the 7501H5 or 7501H7 DD driver installed.
1: HART modem
For programming please refer to the drawing below.
2: HART communicator
For programming please refer to the drawing below. To get access to product-specific commands, the HART communicator
must be loaded with the 7501 H5 / 7501 H7 DD driver. This can be ordered either from the HART Communication Foundation
or from PR electronics.
1
2
FileProductInputOutputCommunication Language Option08:30:00
PRetop5331
Date:1994-8-10
943201594
PRelectronics
AnaloginputAnalogoutput
Serialno:
Inputtype:Outputtype:4-20mA
Upscale
Sensorerror:
Pt100DIN/IEC
0.00-50.00C
3-wire
1.00sec
------
Inputrange:
Connection:
Coldjunctioncomp:
Responsetime:
Tagno:
7501
+Vsupply
Input
Receiving
equipment
HART modem
250 Ω<Rload<1100 Ω
1
2
7501
Safe area
+Vsupply
Input
Receiving
equipment
area
250 Ω<Rload<1100 Ω
7501V111-UK 39
Programming
The 7501 can be configured in one of the following 3 ways:
• Via the optical buttons and the display (see the section Display menu).
• With a HART modem and the PReset software.
• With a HART compliant handheld communicator having the 7501H5 or 7501H7 DD driver installed.
1: HART modem
For programming please refer to the drawing below.
2: HART communicator
For programming please refer to the drawing below. To get access to product-specific commands, the HART communicator
must be loaded with the 7501 H5 / 7501 H7 DD driver. This can be ordered either from the HART Communication Foundation
or from PR electronics.
1
2
FileProductInputOutputCommunication Language Option08:30:00
PRetop5331
Date:1994-8-10
943201594
PRelectronics
AnaloginputAnalogoutput
Serialno:
Inputtype:Outputtype:4-20mA
Upscale
Sensorerror:
Pt100DIN/IEC
0.00-50.00C
3-wire
1.00sec
------
Inputrange:
Connection:
Coldjunctioncomp:
Responsetime:
Tagno:
7501
+Vsupply
Input
Receiving
equipment
HART modem
250 Ω<Rload<1100 Ω
1
2
7501
Safe area
+Vsupply
Input
Receiving
equipment
area
250 Ω<Rload<1100 Ω
PAXd
PAXd

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Operating Instructions
PAXd – Display
8. Changing the HART Protocol Version
It is possible to change the HART protocol version of
the device via the display by using the PC software
and a HART modem or other HART conguration tools
such as portable HART terminals.
Changing the HART version using the display and
the optical buttons
Changing the version is done from the Hart version
view in the advanced menu. Use the optical buttons 
or 2to select the desired HART version. Press the 
button to conrm the version and switch to the save
view. Select Yes and press to conrm the change
or No to cancel.
Changing the HART version using a portable terminal
• Set the device PAXd online and access Device Set-
up – Diag / Service.
• Select write protection and set write protection by
entering “********” (eight asterisks).
• Select new password – enter “********” (eight as-
terisks) and then “HARTREV5” or “HARTREV7”, de-
pending on the desired version.
• Select write enable and enter “-CHANGE-”.
9. Connection of Transmitters in Multidrop
Mode
The outputs of up to 63 devices can be connected in
parallel on 2 wires for a digital HART 7 communication.
For HART 5, the outputs of up to 15 transmitters can be
connected in the same way.
Before being connected, each device must be cong-
ured with a unique polling address ranging from one
to 63 (HART 7) or 15 (HART 5). If two devices are con-
gured with the same address, both will be excluded.
The device must be congured for the multidrop mode
(with a xed output signal of 4 mA). The maximum cur-
rent in the loop is therefore 252 mA (HART 7) or 60 mA
(HART 5).
Communication is done either via a HART communica-
tor or a HART modem.
The PC software can congure the single device for
the multidrop mode and provide it with a unique poll-
ing address.
The HART communicator or the HART modem can be
connected via AB or BC.
7501V111-UK 41
Connection of transmitters in multidrop mode
The outputs of maximum 63 transmitters can be connected in parallel for a digital HART 7 communication on 2-wires. For
HART 5 the outputs of maximum 15 transmitters can be connected in the same way.
Before they are connected, each transmitter must be configured with a unique polling address ranging from one to 63 (HART
7) or 15 (HART 5). If two transmitters are configured with the same address, both will be excluded. The transmitter must be
configured for multidrop mode (with a fixed output signal of 4 mA). The maximum current in the loop is therefore 252 mA
(HART 7) or 60 mA (HART 5).
The communication is done by means of either a HART communicator or a HART modem.
The PReset configuration software can configure the individual transmitter for multidrop mode and provide it with a unique
polling address.
The HART communicator or HART modem can be connected across AB or BC.
R
A
B
C
+
-
+
-
7501 7501
7501
Power
supply
Max. 63 transmitters (HART 7)
or max. 15 transmitters (HART 5)
Rload >250Ω,<1100Ω
PAXd PAXd PAXd

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Operating Instructions
PAXd – Display
10. Abbreviations Used
PV, SV,
TV, QV: Variables in the HART protocol
PV: Primary Value (4…20 mA)
SV: Secondary Value
TV: Tertiary Value
QV: Quaternary Value
CJC: Cold Junction Compensation
TC: Thermocouple
WTH: Resistance Thermometer
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