Endress+Hauser Cubemass DCI User manual

BA141D/06/en/04.10
71112148
valid as of version
V 3.06.00 (Device software)
Operating Instructions
Cubemass DCI
MODBUS RS485
Coriolis mass flow measuring system

Cubemass DCI MODBUS RS485 Table of contents
Endress+Hauser 3
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 5
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Installation, commissioning and operation . . . . . . . . 5
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Notes on safety conventions and icons . . . . . . . . . . . 6
1.6 Symbols on nameplates . . . . . . . . . . . . . . . . . . . . . . 6
2 Identification . . . . . . . . . . . . . . . . . . . . 7
2.1 Device designation . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1 Nameplate of the transmitter . . . . . . . . . . . . 7
2.1.2 Nameplate of the sensor . . . . . . . . . . . . . . . 8
2.1.3 Nameplate for connections . . . . . . . . . . . . . 9
2.1.4 Additional sign – position of the rupture disk 10
2.2 Certificates and approvals . . . . . . . . . . . . . . . . . . . 10
2.3 Registered trademarks . . . . . . . . . . . . . . . . . . . . . . 10
3 Installation . . . . . . . . . . . . . . . . . . . . . 11
3.1 Incoming acceptance, transport and storage . . . . . . 11
3.1.1 Incoming acceptance . . . . . . . . . . . . . . . . . 11
3.1.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . 11
3.2.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2.2 Mounting location . . . . . . . . . . . . . . . . . . . 12
3.2.3 Orientation . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.4 Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.5 Inlet and outlet runs . . . . . . . . . . . . . . . . . 14
3.2.6 Vibrations . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.7 Limiting flow . . . . . . . . . . . . . . . . . . . . . . . 14
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . . 15
3.3.1 Turning the transmitter housing . . . . . . . . 15
3.3.2 Installing the wall-mount housing . . . . . . . 16
3.3.3 Turning the local display . . . . . . . . . . . . . . 18
3.4 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 18
4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . 19
4.1 MODBUS RS485 cable specifications . . . . . . . . . . . 19
4.1.1 Shielding and grounding . . . . . . . . . . . . . . 20
4.2 Connecting the remote version . . . . . . . . . . . . . . . 21
4.2.1 Connecting the connecting cable for
sensor/transmitter . . . . . . . . . . . . . . . . . . . 21
4.2.2 Cable specification, connecting cable . . . . . 21
4.3 Connecting the measuring unit . . . . . . . . . . . . . . . 22
4.3.1 Transmitter connection . . . . . . . . . . . . . . . 22
4.3.2 Terminal assignment . . . . . . . . . . . . . . . . . 24
4.4 Degree of protection . . . . . . . . . . . . . . . . . . . . . . . 24
4.5 Post-connection check . . . . . . . . . . . . . . . . . . . . . . 25
5 Operation . . . . . . . . . . . . . . . . . . . . . . 26
5.1 Display and operating elements . . . . . . . . . . . . . . . 26
5.1.1 Readings displayed (operation mode) . . . . . 27
5.1.2 Additional display functions . . . . . . . . . . . . 27
5.1.3 Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2 Brief guide to the function matrix . . . . . . . . . . . . . . 29
5.2.1 General notes . . . . . . . . . . . . . . . . . . . . . . 30
5.2.2 Enabling the programming mode . . . . . . . . 30
5.2.3 Disabling the programming mode . . . . . . . . 30
5.3 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.1 Type of error . . . . . . . . . . . . . . . . . . . . . . . 31
5.3.2 Error message type . . . . . . . . . . . . . . . . . . . 31
5.3.3 Confirming error messages . . . . . . . . . . . . . 32
5.4 MODBUS RS485 communication . . . . . . . . . . . . . 32
5.4.1 MODBUS RS485 technology . . . . . . . . . . . 32
5.4.2 MODBUS telegram . . . . . . . . . . . . . . . . . . 34
5.4.3 MODBUS function codes . . . . . . . . . . . . . 35
5.4.4 Maximum number of writes . . . . . . . . . . . 35
5.4.5 MODBUS register addresses . . . . . . . . . . . . 36
5.4.6 MODBUS error messages . . . . . . . . . . . . . . 38
5.4.7 MODBUS auto-scan buffer . . . . . . . . . . . . . 39
5.5 Operating options . . . . . . . . . . . . . . . . . . . . . . . . . 43
5.5.1 Operating program "FieldCare" . . . . . . . . . . 43
5.5.2 Device description files for
operating programs . . . . . . . . . . . . . . . . . . 43
5.6 Switching hardware write protection on/off . . . . . . 44
6 Commissioning . . . . . . . . . . . . . . . . . . 45
6.1 Function check . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.2 Switching on the measuring device . . . . . . . . . . . . 45
6.3 Quick Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.3.1 Quick Setup "Commissioning" . . . . . . . . . . 46
6.3.2 Quick Setup "Pulsating Flow" . . . . . . . . . . . 48
6.3.3 Quick Setup "Gas measurement" . . . . . . . . 51
6.3.4 Quick Setup "Communication" . . . . . . . . . . 52
6.3.5 Data back-up/transfer . . . . . . . . . . . . . . . . 54
6.4 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.1 Configuring the device address . . . . . . . . . . 55
6.4.2 Configuring the terminating resistors . . . . . 56
6.4.3 Current output: active/passive . . . . . . . . . . 57
6.4.4 Pulse/frequency output . . . . . . . . . . . . . . . 58
6.4.5 Relay contacts:
Normally closed/Normally open . . . . . . . . 59
6.5 Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.5.1 Zero point adjustment . . . . . . . . . . . . . . . . 60
6.5.2 Density adjustment . . . . . . . . . . . . . . . . . . 61
6.6 Rupture element . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6.7 Purge and pressure monitoring connections . . . . . . 63
6.8 Memory (HistoROM) . . . . . . . . . . . . . . . . . . . . . . . 64
6.8.1 HistoROM/S-DAT (sensor-DAT) . . . . . . . . 64
6.8.2 HistoROM/T-DAT (transmitter-DAT) . . . . 64

Cubemass DCI MODBUS RS485 Table of contents
4Endress+Hauser
7 Maintenance . . . . . . . . . . . . . . . . . . . . 65
7.1 External cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . 65
8 Accessories . . . . . . . . . . . . . . . . . . . . . 66
8.1 Measuring principle-specific accessories . . . . . . . . . 66
8.2 Service-specific accessories . . . . . . . . . . . . . . . . . . 66
9 Troubleshooting . . . . . . . . . . . . . . . . . 67
9.1 Troubleshooting instructions . . . . . . . . . . . . . . . . . 67
9.2 System error messages . . . . . . . . . . . . . . . . . . . . . . 68
9.3 Process error messages . . . . . . . . . . . . . . . . . . . . . . 73
9.4 Process errors without messages . . . . . . . . . . . . . . 74
9.5 Response of outputs to errors . . . . . . . . . . . . . . . . . 75
9.6 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
9.6.1 Removing and installing
printed circuit boards . . . . . . . . . . . . . . . . . 77
9.6.2 Replacing the device fuse . . . . . . . . . . . . . . 81
9.7 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.8 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
9.9 Software history . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10 Technical data . . . . . . . . . . . . . . . . . . . 83
10.1 Technical data at a glance . . . . . . . . . . . . . . . . . . . 83
10.1.1 Applications . . . . . . . . . . . . . . . . . . . . . . . . 83
10.1.2 Function and system design . . . . . . . . . . . . 83
10.1.3 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.1.4 Output . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.1.5 Power supply . . . . . . . . . . . . . . . . . . . . . . . 85
10.1.6 Performance characteristics . . . . . . . . . . . . 86
10.1.7 Operating conditions: Installation . . . . . . . . 88
10.1.8 Operating conditions: Environment . . . . . . 89
10.1.9 Operating conditions: Process . . . . . . . . . . 90
10.1.10 Mechanical construction . . . . . . . . . . . . . . 92
10.1.11 Human interface . . . . . . . . . . . . . . . . . . . . 93
10.1.12 Certificates and approvals . . . . . . . . . . . . . 93
10.1.13 Ordering information . . . . . . . . . . . . . . . . 94
10.1.14 Accessories/spare parts . . . . . . . . . . . . . . . 94
10.1.15 Documentation . . . . . . . . . . . . . . . . . . . . 94
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Cubemass DCI MODBUS RS485 Safety instructions
Endress+Hauser 5
1 Safety instructions
1.1 Designated use
The measuring device described in these operating instructions may only be used for measuring the
mass flow of liquids. At the same time, the system also measures fluid density and fluid temperature.
These parameters are then used to calculate other variables such as volume flow. Fluids with widely
differing properties can be measured.
Resulting from incorrect use or from use other than that designated the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damages being
produced from this.
1.2 Installation, commissioning and operation
Note the following points:
• Installation, connection to the electricity supply, commissioning and maintenance of the
measuring device must be carried out by trained, qualified specialists authorized to perform such
work by the facility's owner-operator. The specialist must have read and understood these
Operating Instructions and must follow the instructions they contain.
• The device must be operated by persons authorized and trained by the facility's owner-operator.
Strict compliance with the instructions in the Operating Instructions is mandatory.
• Endress+Hauser will be happy to assist in clarifying the corrosion resistance properties of materials
wetted by special fluids, including fluids used for cleaning. However, small changes of
temperature, concentration or degree of contamination in the process can result in differences in
corrosion resistance. Therefore, Endress+Hauser provides no warranty and assumes no liability
with regard to corrosion resistance of fluid wetted materials in an application. The user is
responsible for choosing suitable fluid wetted materials in the process.
• If welding work is performed on the piping system, do not ground the welding appliance via the
measuring device.
• The installer must ensure that the measuring system is correctly wired in accordance with the
wiring diagrams. The transmitter must be grounded, except in cases where special protective
measures have been taken, e.g. galvanically isolated power supply SELV or PELV! (SELV = Safety
Extra Low Voltage; PELV = Protective Extra Low Voltage).
• Invariably, local regulations governing the maintenance and repair of electrical devices apply.
1.3 Operational safety
Note the following points:
• Measuring systems for use in hazardous environments are accompanied by separate "Ex
documentation", which is an integral part of these Operating Instructions. Strict compliance with
the installation instructions and ratings as stated in this supplementary documentation is
mandatory. The symbol on the front of this supplementary Ex documentation indicates the
approval and the inspection body (0Europe, NEC/CEC1), NEPSI).
• The measuring device complies with the general safety requirements in accordance with
EN 61010, the EMC requirements of IEC/EN 61326, and NAMUR recommendations NE 21, 43
and 53.
• Depending on the version, the housing of the sensor can be equipped with a rupture disk to
prevent the pressure in the sensor housing from increasing in the event of an error.
As long as the adhesive label (→å4) is intact, the rupture disk is also intact.
• For measuring systems used in SIL 2 applications, the separate manual on functional safety
(SD077D/06) must be observed.
• The manufacturer reserves the right to modify technical data without prior notice. Your
Endress+Hauser representative will supply you with current information and any updates to these
Operating Instructions.
1) NEC (National Electrical Code) / CEC (Canadian Electrical Code)

Safety instructions Cubemass DCI MODBUS RS485
6Endress+Hauser
• Danger - hot surfaces! Hot fluids passing through the measuring tube increase the surface
temperature of the sensor housing. Temperatures close to the fluid temperature must be
expected. If fluid temperatures are high, take suitable measures to protect against scalding from
the hot surfaces.
1.4 Return
The following procedures must be carried out before a flowmeter requiring repair or calibration, for
example, is returned to Endress+Hauser:
• Always enclose a duly completed "Declaration of Contamination" form. Only then can
Endress+Hauser transport, examine and repair a returned device.
• Enclose special handling instructions if necessary, for example a safety data sheet as per
Regulation (EC) 1907/2006 REACH.
• Remove all residues. Pay special attention to the grooves for seals and crevices which could
contain residues. This is particularly important if the substance is hazardous to health, e.g.
flammable, toxic, caustic, carcinogenic etc.
!Note!
You will find a preprinted "Declaration of Contamination and Cleaning" form at the back of this
operating manual.
#Warning!
• Do not return a measuring device if it is not absolutely certain that all traces of hazardous
substances have been removed, e.g. substances which have penetrated crevices or diffused
through plastic.
• Costs incurred for waste disposal and injury (burns etc.) due to inadequate cleaning will be
charged to the owner-operator.
1.5 Notes on safety conventions and icons
The devices are designed to meet state-of-the-art safety requirements, have been tested, and left the
factory in a condition in which they are safe to operate. The devices comply with the applicable
standards and regulations in accordance with EN 61010 "Safety requirements for electrical
equipment for measurement, control and laboratory use". They can, however, be a source of danger
if used incorrectly or for other than the designated use.
Consequently, always pay particular attention to the safety instructions indicated in these Operating
Instructions by the following icons:
#Warning!
"Warning" indicates an action or procedure which, if not performed correctly, can result in injury
or a safety hazard. Comply strictly with the instructions and proceed with care.
"Caution!
"Caution" indicates an action or procedure which, if not performed correctly, can result in incorrect
operation or destruction of the measuring device. Comply strictly with the instructions.
!Note!
"Note" indicates an action or procedure which, if not performed correctly, can have an indirect
effect on operation or trigger an unexpected response on the part of the device.
1.6 Symbols on nameplates
The following symbol appears on nameplates (refer to the corresponding documentation):
In the case of devices for potentially explosive atmospheres, a documentation code appears,
representing supplementary Ex documentation that it is mandatory to read.

Cubemass DCI MODBUS RS485 Identification
Endress+Hauser 7
2 Identification
2.1 Device designation
The "Cubemass DCI" flow measuring system consists of the following components:
• Transmitter
•Sensor
Two versions are available:
• Compact version: transmitter and sensor form a single mechanical unit.
• Remote version: transmitter and sensor are installed separately.
2.1.1 Nameplate of the transmitter
A0011968
Fig. 1: Nameplate specifications for the transmitter (example)
1 Order code/serial number: See the specifications on the order confirmation for the meanings of the individual
letters and digits
2 Power supply/ frequency: 85 to 260 V AC/ 50 to 60 Hz
Power consumption: 15 VA / 15 W
3 Available inputs / outputs
4Reservedforinformation on special products
5 Ambient temperature range
6 Degree of protection
1
2
3
4
6
5
Cubemass DCI
-20°C (-4°F) <Tamb<+60°C (+140°F)
IP67 / NEMA/Type 4XOrder Code:
Ser.No.:
Ident No.:
8CN04-XXXXXXXXXXXX
XXXXXXXXXXX
85-260VAC
50-60Hz
MODBUS RS485, STATUS-IN
15VA/W
i
Um = 260VAC
f-OUT, I-OUT
N12895
Ta+20°C/36°F

Identification Cubemass DCI MODBUS RS485
8Endress+Hauser
2.1.2 Nameplate of the sensor
A0011966
Fig. 2: Nameplate specifications for the sensor (example)
1 Order code/serial number: See the specifications on the order confirmation for the meanings of the individual
letters and digits
2 Calibration factor
3 Flange nominal diameter
4 Max. pressure
5 Material
6Density
7 Fluid temperature range
8Reservedforinformation on special products
9 Secondary containment pressure range
10 Reserved for additional information on device version (approvals, certificates)
11 Ambient temperature range
12 Degree of protection
1
2
3
4
5
8
Ident No.:
Ser.No.:
K-factor:
Order Code:
-20°C(-4°F)<Tamb<+60°C(140°F)
IP67 / NEMA/Type4X
DN04 / 1/8" Cajon 4-VCO-4
p max.: = 160bar / 2320psi
Materials:
Density cal.:
TM:
3.1
1234567890123
12345678901
8CN04-XXXXXXXXXXXX
1.0000 / 00
1.4539 / 904L
+/- 0.001g/cc
-50°C...+200°C / -58°F...+392°F
i
N12895
Sensor C (Cubemass DCI)
6
7
11
12
10
25bar / 362.5psi Container
9

Cubemass DCI MODBUS RS485 Identification
Endress+Hauser 9
2.1.3 Nameplate for connections
A0004362
Fig. 3: Nameplate specifications for transmitter connections (example)
1 Serial number
2 Possible configuration of current output
3 Possible configuration of relay contacts
4 Terminal assignment, cable for power supply: 85 to 260 V AC, 20 to 55 V AC, 16 to 62 V DC
– Terminal No. 1: L1 for AC, L+ for DC
– Terminal No. 2: N for AC, L- for DC
5 Signals present at inputs and outputs, possible configuration and terminal assignment (20 to 27), also "Electrical
values of inputs/outputs" →ä83
6 Version of device software currently installed (incl. language group)
7 Installed communication type
8 Information on current communication software (Device Revision and Device Description)
9 Date of installation
10 Current updates to data specified in points 6 to 9
26(+) / 27(-)
NC:
Versorgung /
Tension d'alimentation
Observer manuel d'instruction
See operating manual
Betriebsanleitung beachten
Communication:
Drivers:
Device SW: XX.XX.XX
XXXXXXXXXXXXXXXX
XXXXXXXXXXXSer.No.:
Supply /
24(+) / 25(-)
22(+) / 23(-)
20(+) / 21(-)
N/L-
PE
A:
NO:
P:
L1/L+
12
319475-00XX
active
passive
normally open contact
normally closed contact
Date: 01. MAI 2009
Update 1
Ex works / ab Werk / réglages usine Update 2
(WEA)
26 = B (RxD/TxD-P)
27 = A (RxD/TxD-N)
3…30VDC, Ri = 3 kOhm
STATUS-IN
MODBUS RS485
X
X
max. 30VAC/0.5A
max. 60VDC/0.1A
max. 30VAC/0.5A
max. 60VDC/0.1A
RELAY
RELAY
NO
NC
2
3
10
6
7
8
9
5
4
1

Identification Cubemass DCI MODBUS RS485
10 Endress+Hauser
2.1.4 Additional sign – position of the rupture disk
A0011967
Fig. 4: Additional sign regarding the position of the rupture disk (RUPTURE DISK)
A Sensor housing with rupture element (incl. rupture disk) È defined fluid exit
A Sensor housing with rupture disk È undefined fluid exit
!Note!
Additional information on the burst pressure of the secondary containment →ä90.
2.2 Certificates and approvals
The devices are designed in accordance with good engineering practice to meet state-of-the-art
safety requirements, have been tested, and left the factory in a condition in which they are safe to
operate.
The measuring devices comply with the applicable standards and regulations in accordance with
EN 61010 -1, "Safety requirements for electrical equipment for measurement, control and
laboratory use" and with the EMC requirements of IEC/EN 61326.
The measuring system described in these Operating Instructions thus complies with the statutory
requirements of the EC Directives. Endress+Hauser confirms successful testing of the device by
affixing to it the CE mark.
The measuring system meets the EMC requirements of the Australian Communications and Media
Authority (ACMA).
The measuring device meets all the requirements of the MODBUS/TCP conformity and integration
test and holds the "MODBUS/TCP Conformance Test Policy, Version 2.0". The measuring device
has successfully passed all the test procedures carried out and is certified by the "MODBUS/TCP
Conformance Test Laboratory" of the University of Michigan.
2.3 Registered trademarks
MODBUS®
Registered trademark of the MODBUS Organization
HistoROM™, S-DAT®, T-DAT™, FieldCare®, Fieldcheck®, Applicator®
Registered or registration-pending trademarks of Endress+Hauser Flowtec AG, Reinach, CH
RUPTURE DISK
12.5BAR+/-10%@80°C
i
RUPTURE DISK
12.5BAR+/-20%@20°C
i
AB

Cubemass DCI MODBUS RS485 Installation
Endress+Hauser 11
3 Installation
3.1 Incoming acceptance, transport and storage
3.1.1 Incoming acceptance
On receipt of the goods, check the following points:
• Is the packaging or content damaged?
• Is anything missing from the shipment and does the scope of supply match your order?
3.1.2 Transport
Comply with the following instructions when unpacking the device and transporting it to its final
location:
• Transport the devices in the containers in which they are delivered.
• The covers or caps fitted to the process connections prevent mechanical damage to the sealing
faces and the ingress of foreign matter to the measuring tube during transportation and storage.
Consequently, do not remove these covers or caps until immediately before installation.
3.1.3 Storage
Note the following points:
• Pack the measuring device in such a way as to protect it reliably against impact for storage (and
transportation). The original packaging provides optimum protection.
• The permitted storage temperature is –40 to +80 °C (–40 to 176 °F), preferably +20 °C (+68 °F).
• Do not remove the protective caps on the process connections until you are ready to install the
device.
• The measuring device must be protected against direct sunlight during storage in order to avoid
unacceptably high surface temperatures.
3.2 Installation conditions
Note the following points:
• The measuring device is designed for mounting on tabletops, walls or pipes.
• The high oscillation frequency of the measuring tubes ensures that the correct operation of the
measuring system is not influenced by pipe vibrations.
• No special precautions need to be taken for fittings which create turbulence (valves, elbows,
T-pieces etc.) as long as no cavitation occurs.
• For mechanical reasons, and in order to protect the piping, it is advisable to support heavy sensors.
3.2.1 Dimensions
All the dimensions and lengths of the sensor and transmitter are provided in the separate
documentation entitled "Technical Information" →ä94.

Installation Cubemass DCI MODBUS RS485
12 Endress+Hauser
3.2.2 Mounting location
The accumulation of air and the formation of gas bubbles in the measuring tube could result in an
increase in measuring errors.
For this reason, avoid the following mounting locations in the pipe:
• The highest point of a pipeline. Risk of air accumulating!
• Directly upstream of a free pipe outlet in a down pipe.
A0003605
Fig. 5: Mounting location
The proposed configuration in the following diagram, however, permits installation in an open
down pipe. Pipe restrictors or the use of an orifice plate with a smaller cross-section than the
nominal diameter prevent the sensor from running empty during measurement.
A0003597
Fig. 6: Installation in a down pipe (e.g. for batching applications)
1 Supply tank
2Sensor
3 Orifice plate, pipe restriction (see Table)
4Valve
5 Batching tank
1
2
3
4
5
DN ∅Orifice plate, pipe restriction
mm inch mm inch
11/24"0.80.03
21/12"1.50.06
4 1/8" 3.0 0.12
6 ¼" 5.0 0.20

Cubemass DCI MODBUS RS485 Installation
Endress+Hauser 13
System pressure
It is important to ensure that cavitation does not occur as it could influence the oscillation of the
measuring tube. No special measures need to be taken for fluids which have properties similar to
water under normal conditions.
In the case of liquids with a low boiling point (hydrocarbons, solvents, liquefied gases) or in suction
lines, it is important to ensure that pressure does not drop below the vapor pressure and that the
liquid does not start to boil. It is also important to ensure that the gases that occur naturally in many
liquids do not outgas. Such effects can be prevented when system pressure is sufficiently high.
Consequently, it is generally best to install the sensor:
• On the pump pressure side (no risk of vacuum)
• At the lowest point in a riser
3.2.3 Orientation
Make sure that the direction of the arrow on the nameplate of the sensor matches the direction of
flow (direction in which the fluid flows through the pipe).
Vertical/horizontal:
When installed correctly, the transmitter housing is above or below the pipe. This arrangement
means that no gas bubbles or solid deposits can accumulate in the curved measuring tube (single-
tube system).
Do not install the sensor in such a way that it is suspended in the pipe without support or measures
to secure it. This prevents excessive material strain at the process connection. The base plate of the
sensor housing is designed for mounting on a tabletop, wall or post.
A0011674
Fig. 7: Vertical and horizontal orientation

Installation Cubemass DCI MODBUS RS485
14 Endress+Hauser
3.2.4 Heating
Some fluids require suitable measures to avoid loss of heat at the sensor. Heating can be electric,
e.g. with heated elements, or by means of heating jackets or copper pipes conveying hot water or
steam.
"Caution!
• Danger of electronics overheating! Make sure that the maximum permissible ambient
temperature for the transmitter is not exceeded.
The adapter between the sensor and transmitter and the connection housing of the remote
version must always remain free of insulating material.
• If using an electric trace heating system whose heating is regulated via phase control or pulse
packages, there is the possibility that measured values could be influenced by magnetic fields
which may occur (i.e. for values greater than those permitted by the EC standard (sine 30 A/m)).
In such instances, it is necessary to magnetically shield the sensor.
The secondary containment can be shielded with tin plate or electric sheets without privileged
direction (e.g. V330-35A) with the following properties:
– Relative magnetic permeability μr≥300
– Plate thickness d ≥0.35 mm (≥ 0.0011")
• For information on the permitted temperature ranges →ä89
In the case of measuring devices that are used in hazardous areas, the trace heating system may
not generate temperatures above the permitted fluid temperature per temperature class.
3.2.5 Inlet and outlet runs
There are no installation requirements regarding inlet and outlet runs. If possible, mount the sensor
upstream of fittings such as valves, T-pieces, elbows etc.
3.2.6 Vibrations
The high oscillation frequency of the measuring tubes ensures that the correct operation of the
measuring system is not influenced by pipe vibrations. Consequently, the sensors require no special
measures for attachment.
3.2.7 Limiting flow
Limiting flow information can be found in the separate "Technical Information" document,
→ä94.

Cubemass DCI MODBUS RS485 Installation
Endress+Hauser 15
3.3 Installation instructions
3.3.1 Turning the transmitter housing
Turning the aluminum field housing
#Warning!
The turning mechanism in devices with EEx d/de or NEC/CEC Cl. I Div. 1 classification is not the
same as that described here. The procedure for turning these housings is described in the Ex-specific
documentation.
1. Loosen the two securing screws.
2. Turn the bayonet catch as far as it will go.
3. Carefully lift the transmitter housing as far as it will go.
4. Turn the transmitter housing to the desired position (max. 2 × 90° in either direction).
5. Lower the housing into position and reengage the bayonet catch.
6. Retighten the two securing screws.
A0004302
Fig. 8: Turning the transmitter housing (aluminum field housing)
3
5
6
1
24

Installation Cubemass DCI MODBUS RS485
16 Endress+Hauser
3.3.2 Installing the wall-mount housing
There are various ways of installing the wall-mount housing:
• Mounted directly on the wall
• Installation in control panel (separate mounting set, accessories) →ä17
• Pipe mounting (separate mounting set, accessories) →ä17
"Caution!
• At the mounting location, ensure that the permitted ambient temperature range
(–20 to +60 °C (–4 to +140 °F), optional –40 to +60 °C (–40 to +140 °F)) is not exceeded.
Install the device in a shady location. Avoid direct sunlight.
• Always install the wall-mount housing in such a way that the cable entries are pointing down.
Mounted directly on the wall
1. Drill the holes →å9.
2. Remove the cover of the connection compartment (a).
3. Push the two securing screws (b) through the appropriate bores (c) in the housing.
– Securing screws (M6): max. Ø 6.5 mm (0.26")
– Screw head: max. Ø 10.5 mm (0.41")
4. Secure the transmitter housing to the wall as indicated.
5. Screw the cover of the connection compartment (a) firmly onto the housing.
A0001130
Fig. 9: Mounted directly on the wall
a
bcc
90 (3.54)
35 (1.38)
192 (7.56)
81.5 (3.2)
mm (inch)

Cubemass DCI MODBUS RS485 Installation
Endress+Hauser 17
Installation in control panel
1. Prepare the opening in the panel →å10.
2. Slide the housing into the opening in the panel from the front.
3. Screw the fasteners onto the wall-mount housing.
4. Screw the threaded rods into the holders and tighten them until the housing is secured on the
panel wall. Afterwards, tighten the locking nuts.
Additional support is not necessary.
A0001131
Fig. 10: Panel installation (wall-mount housing)
Pipe mounting
The assembly should be performed by following the instructions in →å11.
"Caution!
If a warm pipe is used for installation, ensure that the housing temperature does not exceed the
permitted value of +60 °C (+140 °F).
A0001132
Fig. 11: Pipe mounting (wall-mount housing)
245 (9.65)
~110 (~4.33)
210 (8.27) +0.5 (+0.019)
–0.5 (–0.019)
+0.5 (+0.019)
–0.5 (–0.019)
mm (inch)
Ø 20…70
(Ø 0.79…2.75)
~ ~ 6.1)155 (
mm (inch)

Installation Cubemass DCI MODBUS RS485
18 Endress+Hauser
3.3.3 Turning the local display
1. Unscrew cover of the electronics compartment from the transmitter housing.
2. Press the side latches on the display module and remove the module from the electronics
compartment cover plate.
3. Rotate the display to the desired position (max. 4 × 45 ° in both directions), and reset it onto
the electronics compartment cover plate.
4. Screw the cover of the electronics compartment firmly back onto the transmitter housing.
A0003236
Fig. 12: Turning the local display (field housing)
3.4 Post-installation check
Perform the following checks after installing the measuring device in the pipe:
4 x 45°
Device condition and specifications Notes
Is the device damaged (visual inspection)? –
Does the device correspond to specifications at the measuring point, including
process temperature and pressure, ambient temperature, measuring range etc.?
→ä8
Installation Notes
Does the arrow on the sensor nameplate match the direction of flow through
the pipe?
–
Are the measuring point number and labeling correct (visual inspection)? –
Is the orientation chosen for the sensor correct, in other words suitable for sensor
type, fluid properties (outgassing, with entrained solids) and fluid temperature?
→ä11
Process environment / process conditions Notes
Is the measuring device protected against moisture and direct sunlight? –

Cubemass DCI MODBUS RS485 Wiring
Endress+Hauser 19
4 Wiring
#Warning!
When connecting Ex-certified devices, see the notes and diagrams in the Ex-specific supplement to
these Operating Instructions. Please do not hesitate to contact your Endress+Hauser sales office if
you have any questions.
!Note!
The measuring device does not have an internal disconnecting device. Therefore, assign a switch or
circuit breaker to the measuring device with which the voltage supply line can be disconnected from
the power system.
4.1 MODBUS RS485 cable specifications
In the EIA/TIA-485 standard, two versions (cable type A and B) are specified for the bus line and
can be used for all transmission rates. However, we recommend you use cable type A. The cable
specification for cable type A is provided in the following table:
Note the following points for the bus structure:
• All the measuring devices are connected in a bus structure (line).
• Using cable type A and with a transmission rate of 115200 Baud, the maximum line length
(segment length) of the MODBUS RS485 system is 1200 m (3936 ft).
The total length of the spurs may not exceed a maximum of 6.6 m (21.7 ft) here.
• A maximum of 32 users are permitted per segment.
• Each segment is terminated at either end with a terminating resistor.
• The bus length or the number of users can be increased by introducing a repeater.
Cable type A
Characteristic impedance 135 to 165 Ωat a measuring frequency of 3 to 20 MHz
Cable capacitance < 30 pF/m (< 9.2 pF/ft)
Core cross-section > 0.34 mm2(AWG 22)
Cable type Twisted pairs
Loop-resistance ≤ 110 Ω/km (≤ 0.034 Ω/ft)
Signal damping Max. 9 dB over the entire length of the cable cross-section
Shielding Copper braided shielding or braided shielding and foil shielding

Wiring Cubemass DCI MODBUS RS485
20 Endress+Hauser
4.1.1 Shielding and grounding
When planning the shielding and grounding for a fieldbus system, there are three important points
to consider:
• Electromagnetic compatibility (EMC)
• Explosion protection
• Employee safety
To ensure the optimum electromagnetic compatibility of systems, it is important that the system
components and above all the cables, which connect the components, are shielded and that no
portion of the system is unshielded. Ideally, the cable shields are connected to the normally metal
housings of the connected field devices. Since these are generally connected to the protective
ground, the shield of the bus cable is grounded many times. Make sure that the stripped and twisted
lengths of cable shield to the terminals are as short as possible.
This approach, which provides the best electromagnetic compatibility and employee safety, can be
used without restriction in systems with optimum potential equalization.
In the case of systems without potential equalization, a mains frequency (50 Hz) equalizing current
can flow between two grounding points which can destroy the cable in unfavorable cases, e.g. when
it exceeds the permissible shield current.
To suppress the low frequency equalizing currents on systems without potential equalization, it is
therefore recommended to connect the cable shield directly to the building ground (or protective
ground) at one end only and to use capacitive coupling to connect all other grounding points.
"Caution!
The legal EMC requirements are fulfilled only when the cable shield is grounded on both sides!