MODBUS® Serial Interface Modules
D6000 Series
U Complete Data Acquisition Systems
U Analog and Digital I/O Models Available
U RS485 Serial Communications Interface
U MODBUS
U Up to 25 Conversions per Second
U 500 Vrms Analog Input or Analog Output Isolation
U 16-Bit Analog Input Measurement Resolution
U Continuous Self-Calibration;
No Adjustments Required
U Programmable Analog Input Digital Filters
U Requires 10V to 30 Vdc Unregulated Supply
U Transient Suppression on Serial
RS485 Data Lines
U Removable Screw Terminal Plug
Connectors Supplied
Applications
U Process Monitoring and Control
U Remote Data Logging to any Host Computer
U Product Testing
U Direct Connection to PLC
The D6000 Series modules are a family of complete
data acquisition modules for use in process control
systems. The analog input models can measure
process signals such as thermocouples, 4 to 20 mA
loops, and discrete contact closures. The analog
output models can generate voltage or current signals
for controlling annunciators or valves. The digital input
and output models can sense the state of remote
digital signals or control solid state relays. Complete
data acquisition systems can be created with ease
with the D6000 modules and a host supervisory
computer or programmable logic controller.
The modules provide direct connection to a wide
variety of sensors and annunciators. They perform
all signal conditioning and linearization and contain
no pots or DIP switches. All user-selectable settings,
such as ranges, communications settings are stored
in nonvolatile EEPROM, which maintains these values
even after power is removed.
The D6000 series modules communicate with a
host computer using the MODBUS RTU protocol.
The MODBUS RTU protocol is widely recognized
throughout the data acquisition industry by and
supported by almost all commercially available
process control programs and supervisory host PLC’s.
®
RTU Protocol
D6200, shown
smaller then
actual size
This binary protocol communicates via a two-wire
RS485 serial interface. The key to the product concept
is that the modules are easy to connect and use. You
do not need engineering experience in complicated
data acquisition hardware. With the modules, anyone
familiar with a personal computer can construct a data
acquisition system.
This modular approach to data acquisition is very
flexible, easy to use and cost effective. The modules can
be mixed and matched to fit your application. They can
be placed remote from the host and from each other.
The D6000 series is completely hardware compatible
with the D1000M, D1700M, D3000M and D5000M series
modules. Meaning, they can all be mixed and matched
on one RS485 serial communications line. Each module
is identified by a unique user-programmable address.
This addressing technique allows modules to be
interrogated in any order.
ANALOG INPUT MODULES
The D6100 through D6400 Series analog input modules
contain seven input channels and make up a complete
data acquisition system. Each unit contains analog
signal conditioning circuits optimized for a specific input
type. The amplified sensor signals are converted to
digital data with a microprocessor-controlled integrating
A/D converter. Offset and gain errors in the analog
circuitry are continuously monitored and corrected using
microprocessor techniques.
The analog input modules output the resultant digital
data as unsigned integer percentage of full-scale values
that are compatible with the MODBUS RTU protocol.
The modules continuously convert data at the rate of
up to 25 conversions per second and store the latest
result in a buffer. Host processors may request data by
sending a MODBUS query to the module. The D6000
series modules will instantly respond by communicating
the memory buffer data back to the host processor. Up
to 247 modules may be linked to a single RS485 port.
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1
D6500 shown smaller
than actual size.
ANALOG OUTPUT MODULES
The D6500 analog output modules contain two 12-bit
digital to analog converters (DAC) for generating either
voltage or current output signals. The output signal
type for each DAC is user selectable and each DAC is
independently controlled via a host computer using the
MODBUS RTU protocol. Two voltage and two current
ranges are available.
The D6500 analog output modules also contain
programmable features such as output slew rate,
a communications watchdog timer, programmable
startup signal value, and an 8-bit analog to digital
converter for analog readback the output signal. The
communications watchdog timer can be used to move
the analog output signal to a known “safe” condition in
the event of a communications failure.
D6720 shown smaller
than actual size
DIGITAL OUTPUT MODULES
The D6720 digital output modules contain 15 individual
open-collector transistor outputs for controlling
annunciators, lamps, or other devices that require an
ON/OFF signal.
The D6720 digital output modules also contain
programmable features such as a communications
watchdog timer and programmable startup signal
values for each bit.
The communications watchdog timer can be used
to move the digital output signals to a known “safe”
condition in the event of a communications failure.
D6710 shown smaller
than actual size.
DIGITAL INPUT MODULES
The D6710 digital input modules contain 15 individual
signal inputs for monitoring logic levels, contact
closures, or other ON/OFF signals in a data acquisition
system. Each discrete input terminal contains a pullup biasing resistor allowing for direct connection to a
set of contacts. The input terminals can accept signals
between ±30 Vdc without damage.
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To Order, Call or Shop Online at omega.com
D6400 shown smaller
than actual size.
COMMUNICATIONS
The D6000 series modules are designed to
easily interface with computers and PLC’s. All
communications to and from the module are
performed using the MODBUS RTU protocol via an
RS485 interface.
The two-wire RS485 system is a half duplex system,
developed for multi-dropped systems that can
communicate at high data rates over long distances.
RS485 receivers can handle common mode voltages
from -7 to 12V without loss of data, making them ideal
for transmission over great distances.
SM
18.1
(7.14)
16.5
(6.5)
10.2
(4.0)
3.8
(1.5)
15.2
(6.0)
1.9
(0.75)
Dimensions: cm (inch)
MODBUS® COMMAND SET
The D6000 series modules use the MODBUS RTU
protocol for communications. The MODBUS RTU
binary protocol uses a master-slave technique, in
which only the master device can initiate transactions.
The slave devices respond by supplying the requested
data to the master or by performing the requested
action in the query. The master can address any
slave device. The returned messages are considered
response messages. The supported master function
codes are:
MODBUS RTU FUNCTIONS
AND DESCRIPTIONS
01 – Read Coil Status
02 – Read Register Status
03 – Read Holding Registers
04 – Read Input Register
(Analog Inputs)
05 – Force Single Coil
06 – Preset Single Register
0F – Force Multiple Coils
10 – Preset Multiple Registers
PROCESS CONTROL SOFTWARE
MODBUS RTU protocol is one of the most widely
supported serial protocols in the data acquisition
market. MODBUS RTU software drivers are available
for almost every data acquisition software program
available today. Thus providing instant connectivity
between the D6000 modules and most data
acquisition software programs.
SETUP
The D6000 series are initialized at the factory using
the MODBUS RTU protocol. Features such as the
MODBUS device address, baud rate, and analog
signal ranges can be easily configured using the
setup software. Each D6000 module must be properly
configured before installation into a MODBUS system.
UTILITY SOFTWARE
Complimentary Utility Software is included with each
purchase order. The software is compatible with
Windows® operating systems and distributed on
CD-ROM. The Utility Software simplifies configuration
of all user selectable options such as device address,
baud rate and filtering constants. The latest version
of our software is always available on our web site at
omega.com.
SPECIFICATIONS
D6000 (Typical @ 25°C and nominal power supply
unless otherwise noted)
GENERAL
Programmable Digital Filters:
In analog input modules
Maximum CMV (Input to Output at 115Vrms, 60Hz):
500V rms
Setups: Stored in EEPROM
Unused Analog Input Channels: Software disable
INTERFACE
Communications: MODBUS RTU protocol/RS485
Serial port
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SERIAL COMMUNICATIONS
Baud Rates: 9600, 19.2K, 38.4K, 57.6K, 115.2K
Data Format: 8 data bits, and 1 or 2 stop bits
Parity: Odd, even, none
Device Address: User selectable
Number of Modules: Up to 247 multi-drop modules per
host serial port
Communications Distance: Up to 1219 m (4000') (RS485)
Transient Suppression: On RS485 data lines
POWER REQUIREMENTS
Unregulated 10V to 30 Vdc, protected against power
supply reversals
ENVIRONMENTAL
Operating Temperature Range:
-25 to 70°C (-13 to 158°F)
Storage: -25 to 85°C (-13 to 185°F)
Relative Humidity: 0 to 95% non-condensing
PACKAGE, DIMENSIONS AND CONNECTORS
Case: ABS thermoplastic, UL-94-5VA rated
Dimensions:
102 H x 152 W x 38 mm D (4 x 6 x 1.5"); mounting holes
165 mm (6.6") on center
Connectors: Screw terminal barrier plug (supplied)
MODULE SPECIFICATIONS
D6100 VOLTAGE INPUTS
Number of Channels: 7 differential voltage inputs
Ranges: ±0.025V, ±0.05V, ±0.1V, ±1V, ±5V, ±10V
Resolution ADC: 16-bit ADC, 25/20 conversions
per second
Accuracy: ±0.05% of FS maximum
Span Tempco: ±50ppm/°C maximum
Input Burnout Protection: To 250 Vac
Input impedance: 20 MΩ min
Power Requirements: Serial = 1.4W
D6200 CURRENT INPUTS
Number of Channels: 7 differential current inputs
Range: ±20 mA
Resolution ADC: 16-bit ADC, 25/20 conversions
per second
Accuracy: ±0.05% of FS maximum
View shown with optional
DIN rail mounting clips,
model number DMK-1.
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Span Tempco: ±50ppm/°C maximum
Voltage Drop: 2.0V maximum
Input impedance: <100 Ω (70 typical)
Power Requirements: Serial = 1.4W
D6300 THERMOCOUPLE INPUTS
Number of Channels: 7 differential thermocouple inputs
Thermocouple Types: J, K, T, E, R, S, B, and C
Ranges:
J = -200 to 760°C (-328 to 1400ºF)
K = -150 to 1250°C (-238 to 2282ºF)
T = -200 to 400°C (-328 to 752ºF)
E = -100 to 1000°C (-148 to 1832ºF)
R = 0 to 1750°C (32 to 3182ºF)
S = 0 to 1750°C (32 to 3182ºF)
B = 0 to 1820°C (32 to 3308ºF)
C = 0 to 2315°C (32 to 4199ºF)
Thermocouple Accuracy (Error From all Sources)
from 0 to 40°C Ambient: J, K, T, E = ±1.5°C maximum;
R, S, B, C = ±3.5°C maximum; (300°C to +F.S.)
Resolution ADC: 16-bit ADC, 25/20 conversions
per second
Input Impedance: 20 MΩ min
Cold Junction Compensation: Automatic
Lead Resistance Effect: <40 µV per 350 Ω
Indication: Open thermocouple and over range
indication
Input Burnout Protection: To 250 Vac
Power Requirements: Serial = 1.4W
D6400 VOLTAGE, THERMOCOUPLE,
CURRENT INPUTS
Number of Channels: 7 differential voltage,
thermocouple, current inputs
Specifications: Equal to D6100, D6200
and D6300 series
D6500 ANALOG OUTPUTS
Number of Channels: Two analog outputs
(programmable for voltage or currrent output)
Voltage Range: 0 to 10 Vdc, ±10 Vdc
Current Ranges: 0 to 20 mA, 4 to 20 mA
Update Rate: 250 conversions per second
Accuracy: ±0.1%
DAC Resolution: 12-bit
Span Tempco: ±25ppm/°C maximum
Settling Time to 0.1% FS: 1 mS
Communications: Watchdog timer
Current Output Compliance: ±12 Vdc
Voltage Output Drive: 5 mA maximum
ADC Analog Output Signal Readback: 8-bit
Isolation: 500 Vac, output common to system ground
Current Output Burnout: Protected to 250 Vac
Power Requirements: Serial = 2.1W
D6710 DIGITAL INPUTS
Number of Channels: 15 digital inputs
Internal: 10K pull-up resistors on each bit accept
direct switch closure
Logic “0”: <1Vdc, Logic “1”: = >3.5Vdc
Input Burnout: To ±30 Vdc without damage
Isolation: 500 Vac, input common to system ground
Power Requirements: Serial = 0.75W
D6720 DIGITAL OUTPUTS
Number of Channels: 15 Open-collector outputs to
30 Vdc, 100 mA maximum
Vsat: +0.3 Vdc maximum at 100 mA
Short Circuit Protection: To 500 mA
Communications: Watchdog timer
Digital Output Update Rate: 4.5 Hz
Isolation: 500 Vac, output common to system ground
Power Requirements: Serial = 1.0W
SM
OMEGACARESM extended warranty program is
available for models shown on this page. Ask your
Extended Warranty
Program
sales representative for full details when placing
an order. OMEGACARE
equivalent loaners.
SM
covers parts, labor and
To Order Visit omega.com/d6000_series for Pricing and Details
Model No. Description
D6100 7-channel differential voltage input module
D6200 7-channel differential current input module, ±20 mA
D6300 7-channel differential thermocouple input module
D6400 7-channel differential voltage/thermocouple/current input module
D6500 2-channel voltage, current analog output module
D6710 15-bit digital input module
D6720 15-bit digital output module
DMK-1 DIN rail mounting kit for D6000 Series modules
Comes complete with operator’s manual and utility software on CD.
Ordering Example: D6100, 7-channel differential voltage input module and OCW-1 OMEGACARESM 1 year extended warranty (adds 1 year to
standard 1 year warranty).
4
To Order, Call or Shop Online at omega.com
SM
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