PR electronics 4511 User manual

SIGNALS THE BEST
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PR electronics A/S tilbyder et bredt program af analoge og digitale
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signal conditioning devices for industrial automation. The product
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Transmitters, and Universal Devices. You can trust our products in
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4511V100-UK 1
MODBUS COMMUNICATION ENABLER
4511
CONTENTS
Warning...................................................................................................................... 2
Safety instructions................................................................................................ 3
EC declaration of conformity............................................................................. 4
Applications.............................................................................................................. 5
Technical characteristics..................................................................................... 5
Mounting................................................................................................................... 6
RJ 45 Modbus connector..................................................................................... 6
Order codes .............................................................................................................. 7
Specifications.......................................................................................................... 7
Approvals .................................................................................................................. 8
Installation examples........................................................................................... 9
Modbus basics......................................................................................................... 10
4511 Modbus parameter settings.................................................................. 11
4511 Modbus Routing diagram....................................................................... 12
4511 Modbus Routing diagram (ADV SET)................................................. 13

2 4511V100-UK
SYMBOL IDENTIFICATION
Triangle with an exclamation mark: Read the manual before
installation and commissioning of the device in order to avoid
incidents that could lead to personal injury or mechanical damage.
The CE mark proves the compliance of the device with the
essential requirements of the directives.
The double insulation symbol shows that the device
is protected by double or reinforced insulation.
Ex devices have been approved according to the ATEX directive for
use in connection with installations in explosive areas.
WARNING
This device is designed for connection to hazardous electric
voltages. Ignoring this warning can result in severe personal injury
or mechanical damage.
To avoid the risk of electric shock and fire, the safety instructions
of this guide must be observed and the guidelines followed. The
specifications must not be exceeded, and the device must only be
applied as described in the following.
Prior to the commissioning of the device, this installation guide
must be examined carefully.
Only qualified personnel (technicians) should install this device.
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
WARNING
Until the device is fixed, do not connect hazardous voltages to the
device. The following operations should only be carried out on a
disconnected device and under ESD safe conditions:
General mounting, connection and disconnection of Modbus cable.
Troubleshooting the device.
WARNING
Repair of the device must be done by PR electronics A/S only.
GENERAL
HAZARD-
OUS
VOLTAGE
CAUTION

4511V100-UK 3
SAFETY INSTRUCTIONS
RECEIPT AND UNPACKING
Unpack the device without damaging it. The packing should always follow the
device until this has been permanently mounted. Check at the receipt of the device
whether the type corresponds to the one ordered.
ENVIRONMENT
The device is manufactured for indoor use. Avoid direct sunlight, dust, high
temperatures, mechanical vibrations and shock, as well as rain and heavy moisture.
If necessary, heating in excess of the stated limits for ambient temperatures should
be avoided by way of ventilation.
The device may be used in Overvoltage Category II, Pollution Degree 2 at an
altitude up to 2000 m.
MOUNTING
Only qualified technicians who are familiar with the technical terms, warnings, and
instructions in this installation guide and who are able to follow these should connect
the device. Only devices which are undamaged and free of moist and dust may be
installed. The device may be installed and supplied by PR electronics 4000 and 9000
series only. Should there be any doubt as to the correct handling of the device, please
contact your local distributor or, alternatively, PR electronics A/S.
CALIBRATION AND ADJUSTMENT
During calibration and adjustment, the measuring and connection of external
voltages must be carried out according to the specifications of this installation
guide. The technician must use tools and instruments that are safe to use.
CLEANING
When disconnected, the device may be cleaned with a cloth moistened with
distilled water.
IECEx, ATEX INSTALLATION IN ZONE 2
IECEx DEK 13.0026 X Ex nA IIC T5 Gc
DEKRA 13ATEX0098 X II 3 G Ex nA IIC T5 Gc
For safe installation the following must be observed.
The device must be installed by qualified personnel who are familiar with the
national and international laws, directives and standards that apply to this area.
Year of manufacture can be taken from the first two digits in the serial number.
The devices must be installed in a suitable enclosure providing a degree of
protection of at least IP54 according to EN60529, taking into account the
environmental conditions under which the equipment will be used.
To prevent ignition of the explosive atmospheres do not separate connectors when
energized and an explosive gas mixture is present.
To avoid the risk of explosion due to electrostatic charging of the enclosure, do
not handle the units unless the area is known to be safe, or appropriate safety
measures are taken to avoid electrostatic discharge.

4 4511V100-UK
EC DECLARATION OF CONFORMITY
As manufacturer
PR electronics A/S
hereby declares that the following product:
Type: 4511
Name: Modbus Communication Enabler
is in conformity with the following directives and standards:
The EMC Directive 2004/108/EC and later amendments
EN 61326-1 : 2006
For specification of the acceptable EMC performance level, refer to the electrical
specifications for the module.
The Low Voltage Directive 2006/95/EC and later amendments
EN 61010-1 : 2010
The ATEX Directive 94/9/EC and later amendments
EN 60079-0 : 2009 and EN 60079-15 : 2010
Notified body
DEKRA Quality B.V. (0344)
Kim Rasmussen
Manufacturer’s signature

4511V100-UK 5
MODBUS COMMUNICATION ENABLER
4511
• Programming display for system 4000 and 9000 devices
• Modbus RTU protocol interface over RS-485
• Monitor process value from the built-in display
• High 2.5 kV isolation to host unit
• Shielded RJ45 Modbus connector on top
Applications:
• The4511detachabledisplayaddsModbusRTURS-485serialcommunications
to all current and future 4000/9000 units.
• Theunitconvertsawidearrayofsensorsandanalogdevicesignalsmeasured
by the system 4000, like uni- and bipolar mA and voltage signals, potentiometer,
Lin. R, RTD and TC, to a Modbus communication line signal.
• When mounted on a system 9000 device any signal coming from or going to
I.S. classified area, like AI, AO, DI and DO signals, can be converted to a Modbus
network.
• Allindividualunitoperatingparameterscaneasilyandquicklybeconfiguredby
using the Modbus communication or by using the front display menu.
• The easily readable 4511 display can be used to read the process signal,
simulate the output signal, indicate sensor errors and internal module errors.
Technical characteristics:
• 4511hasfull4501functionalityforunitprogramming,processsignalmonitoring
and diagnostics handling.
• ModbusRTUprotocolissupportedusingaserialRS-485communicationwiring.
• Multidrophalf-duplexconnectionviashieldedRJ45connector.
• High safe galvanic isolation of 2.5 kVAC between the serial wiring and the
connected system 4000/9000 units.
• Modbus parameters such as address, baud rate, stop bit(s), and parity bit are
configured from the 4511 display, which also stores parameters.
Mounting / installation / programming:
• MountinginZone2/Div2.
• The 4511 can be moved from one device to another. The individual system
4000/9000 unit configuration of the first transmitter can be saved and
downloaded to subsequent transmitters.
• Programmedparameterscanbeprotectedbyauser-definedpassword.

6 4511V100-UK
MOUNTING
4511 is a detachable display that can be mounted on all
system 4000/9000 fronts for programming and signal monitoring.
4511 contains a four line LCD dot display:
Line 1 can e.g. show the scaled process value.
Line 2 can e.g. show the selected engineering unit.
Line 3 can e.g. show the analog output or TAG no.
Line 4 shows status for communication and
e.g. signal trending.
RJ45 Modbus Connector:
Pin 5: RS485 A line
Pin 4: RS485 B line
Pin 8: RS485 GND and shield

4511V100-UK 7
ORDER CODES
4511 = Modbus communication enabler
4590 = Configmate interface
4801 = Modbus gateway
SPECIFICATIONS
Environmental conditions:
Specifications range............................................... -20°C to +60°C
Storage temperature.............................................. -20°C to +85°C
Relative humidity.....................................................  <95%RH(non-cond.)
Protection degree.................................................... IP20
Installation in pollution degree 2 / overvoltage category II.
Mechanical specifications:
Dimensions(HxWxD).............................................. 73.2 x 23.3 x 26.5 mm
Dimensions(HxWxD)w/4000/9000unit .... 109 x 23.5 x 131 mm
Weight approx........................................................... 100 g
Connection.................................................................. RJ45 - shielded
Common electrical specifications:
Power consumption ................................................ ≤ 0.15 W
Isolation voltage - test / working ..................... 2.5 kVAC / 250 VAC
reinforced isolation
Signal / noise ratio .................................................. > 60 dB
Update rate / response time...............................  >50Hz/<20ms
Signal type ................................................................. RS-485 half duplex
Serial protocol............................................................ Modbus RTU
Modbus mode............................................................ RTU - slave
Devices on an RS485 line.................................... Up to 32 (without a repeater)
Data rates, baud....................................................... 2400, 4800, 9600, 19200,
38400, 57600, 115200
Automatic baudrate detection ........................... Yes - can be configured ON or OFF
Parity ............................................................................ Even, Odd, None
Stop bit(s).................................................................... 1 or 2
Digital adressing ...................................................... 1...247
Response delay ........................................................ 0...1000 ms
Extended EMC immunity:
NAMUR NE 21, A criterion, burst .................... No loss of communication

8 4511V100-UK
Approvals:
EMC 2004/108/EC .................................................. EN 61326-1
LVD 2006/95/EC...................................................... EN 61010-1
UL, Standard for Safety......................................... UL 61010-1
Marine:
Det Norske Veritas, Ships & Offshore............. Stand. f. Certific. No. 2.4
Ex:
ATEX.............................................................................. DEKRA 13ATEX0098 X
II 3 G Ex nA IIC T5 Gc
IECEx............................................................................. DEK 13.0026 X
Ex nA IIC T5 Gc
FM .................................................................................. 0003049132-C
CL I DIV2 GP A- D T5
 CLIZn2GroupsIICT5
 CLIZn2AEx/ExnAIICT5
Pending

Modbus TCP/IP
4511V100-UK 9
4511 INSTALLATION EXAMPLES
Modbus RTU
Zone 2 / Cl. 1, Div. 2, gr. A-DSafe Area
4000
/
9000
4000
/
9000
4000
/
9000
PLC/DCS
HMI/PC
4511
4000
/
9000
4000
/
9000
4000
/
9000
Modbus RTU
45114511
Access
Point
PLC/DCS
HMI/PC
Gateway
IP54
4000
/
9000
4000
/
9000
4000
/
9000
Gateway
PLC/DCS
HMI/PC
4511
Modbus RTU
45114511
4801
Modbus RTU
4511 45114511
Ethernet T
T
T

10 4511V100-UK
MODBUS BASICS
Modbus is a “master-slave” system...,
where the “master” communicates with one or multiple “slaves”.
The master typically is a PLC (Programmable Logic Controller), DCS (Distributed
ControlSystem),HMI(HumanMachineInterface),RTU(RemoteTerminalUnit)
or PC.
The three most common Modbus versions used are: MODBUS ASCII, MODBUS
RTU and MODBUS/TCP.
In Modbus RTU, data is coded in binary, and requires only one communication
byte per data byte. This is ideal for use over multi-drop RS485 networks, at
speeds up to 115,200 bps.
The most common speeds are 9,600 bps and 19,200 bps.
Modbus RTU is the most widely used industrial protocol and is supported by
the 4511.
Modbus RTU:
To communicate with a slave device, the master sends a message containing:
Device Address - Function Code - Data - Error Check
The Device Address is a number from 0 to 247.
Messages sent to address 0 (broadcast messages) will be accepted by all
slaves, but numbers 1-247 are addresses of specific devices.
With the exception of broadcast messages, a slave device always responds to a
Modbus message so the master knows the message was received.
4511 Supported Modbus Function Codes:
Command Function code
ReadHoldingRegisters 03
Read Input Registers 04
Write Single Register 06
Diagnostics 08
Write Multiple Registers 16
The Function Code defines the command that the slave device is to execute,
such as read data, accept data, report status. Some function codes have sub-
function codes.
The Data defines addresses in the device’s memory map for read functions,
contains data values to be written into the device’s memory, or contains other
information needed to carry out the function requested.

4511V100-UK 11
The Error Check is a 16-bit numeric value representing the Cyclic Redundancy
Check (CRC).
Maximum number of registers which can be read or written at once:
For a read command, the limit is 8 registers at a baud rate up to 38,400 bps,
16 registers @ 57,800 bps and 32 registers @ 115,200 bps.
For a write command, the limit is 123 registers at baud rates up to 115,200
bps.
4511 MODBUS PARAMETER SETTINGS
Automatic Baudrate Detection:
Can be configured YES or NO
Supported baudrates:
2400, 4800, 9600, 19.2k, 38.4k, 57.6k, 115.2k bps
Parity Mode:
Even, Odd or None parity
Stop Bits:
1or 2 stop bits
Response delay:
0...1000 ms (0 ms = default)
Modbus slave addressing range:
1 - 247 (247 = default address)
Modbus Parameter Storage:
Saved in non-volatile memory in the 4511 device
(Factory Default Values are marked in bold)
Modbus RTU segment line termination:
A 120 Ohm resistor should be installed on both ends of a RS485 Modbus RTU
segment loop to prevent signal echoes from corrupting data on the line.
MODBUS BASICS

12 4511V100-UK
4511 MODBUS SETTINGS ROUTING DIAGRAM

4511V100-UK 13
Default settings:
Baud rate: 19.2 kbps
Parity mode: Even
Stop bit: 1
Address: 247
Reponse delay: 0 ms
4511 MODBUS SETTINGS ROUTING DIAGRAM

Programmable displays with a wide
selection of inputs and outputs for display of temperature,
volume and weight, etc. Feature linearisation, scaling, and
dierence measurement functions for programming via
PReset software.
Displays
A wide selection of transmitters for DIN
form B mounting and DIN rail devices with analogue
and digital bus communication ranging from application-
specific to universal transmitters.
Temperature
Galvanic isolators for analogue and digital
signalsaswellasHART®signals. A wide product range
with both loop-powered and universal isolators featuring
linearisation, inversion, and scaling of output signals.
Isolation
Interfaces for analogue and digital signals
aswellasHART®signals between sensors / I/P converters /
frequency signals and control systems in Ex zone 0, 1 & 2
and for some devices in zone 20, 21 & 22.
Ex interfaces
PC or front programmable devices with
universal options for input, output and supply. This range
oers a number of advanced features such as process
calibration, linearisation and auto-diagnosis.
Universal

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