Modbus RTU Datalogger

DAT9000DL

Modbus RTU Datalogger DAT9000DL
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Modbus RTU Datalogger.

• Modbus RTU Datalogger.
• Stores Modbus Registers.
• Function Blocks.
• Modbus RS485 Master.
• Modbus RS485, Slave.
• Modbus Ethernet 10 Base-T Modbus TCP.
General Description

The DAT9000DL Modbus RTU Datalogger is a data acquisition and control unit with an integrated microSD slot for on-board logging; a USB flash drive (thumb drive) option is also available. It records selected register values so you can capture trends and diagnostics directly on removable media.

Like the DAT9000, the DAT9000DL can operate as a Modbus RTU Master or Slave and includes RS485 and Ethernet (Modbus TCP) communication ports. It can poll and control a network of slaves, read/write registers, and execute logical or mathematical functions such as linearization, scaling, averaging, and square-root extraction.

Logged data can be retrieved by removing the microSD/USB drive for analysis or via the Ethernet port to access saved values without interrupting operation. Configuration is performed with Datexel’s DEV9K software (free of charge), which streamlines register mapping, processing rules, and communication settings.

INPUT OUTPUT POWER SUPPLY
Modbus Master/Slave RS485 Modbus TCP Ethernet 10/100T Power Supply Voltage 10-30Vdc
Modbus TCP Ethernet 10/100T Modbus Master/Slave RS485 Reverse polarity protection 60Vdc
CURRENT CONSUMPTION CONFIGURATION ISOLATION
Between 45 and 80 mA PC Programmable Between Input/Comms/Power Supply 1500Vac.
EMC HOUSING TEMPERATURE
For Industrial environments Material self-extinguishing Operating Temperature 14°F +140°F -10°C +60°C
Immunity EN 61000-6-2 Dimensions W x H x T 4" x 4 3/4 " x 7/8 " Storage Temperature -40°F +185°F-40°C +85°C
Emission EN 6100-6-4 100 x 120x x 22.5 mm Humidity (non condensing) 0-90%
Weight 3 oz 90 g
DAT9000USB Datasheet DAT9000DL Datasheet
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Applications
Drawings
DAT9000DL User Guide
DEV9K User Guide
Modbus Controllers
Application Note Connecting with CVPROG Cable. Application Note Sync Time. Application Note Youtube.

Specifications
Data Logging: 1 Micro SD Card
Communication:  
RS485: Port 1 Modbus RTU Master, Port 0 Modbus RTU Slave.
Ethernet: Ethernet 10Base-T, Modbus TCP.
Power Supply: Voltage 10 - 30 Vdc. Reverse polarity protection 60 Vdc.
Current Consumption: 80 mA max.
Temperature rating: Operative Temperature -4°F +140°F -20°C +60°C Storage Temperature -40°F +185°F -40°C +85°C.
Humidity: (none condensing) 0-90%.
Housing: Material self-extinguishing.
Dimensions: W x L x H 4 x 4 3/4 x 1inch, 100 x 120 x 22.5mm.
Weight: 7 oz 200 g.
EMC. For industrial environments.
Immunity: EN 61000-6-2.
Emission: EN 61000-6-4.
Isolation: 1500Vac, 50Hz, 1 Minute.
Configuration: PC Configurable.
Drawings

DAT9000DL Wiring Diagram

RS-485 Slave Master
D- Port 0 Pin 1 Port 1 Pin 5
D+ Port 0 Pin 2 Port 1 Pin 6
GND Port 0 GND Port 1 GND
RS-232D Front view PC DB9
GND Port 0 Pin 4 Pin 5
RX Port 0 Pin 5 Pin 3
TX Port 0 Pin 6 Pin 2
Power Supply (18-30Vdc). Positive G Negative F.  
INIT Short pin E to F
Modbus RTU Datalogger wiring Diagram.
Applications
Back to General Description
Application Note, Using serial RS485 to configure a Modbus Master RTU.
Printed Version

Set up the DAT9000DL.

  1. On the DAT9000DL Connect 24 Vdc to V+ and V-.
  2. Using a DAT3580USB2W or any other Isolated USB to Serial RS485 Converter, connect D- to Terminal A and D+ to Terminal B.
  3. Download the Dev9K version 1.8 from the Datexel download page.

It may be necessary to use an Isolated USB to Serial RS485 Converter as most PC are not Isolated. There are alternative options other than USB to RS485 such as Ethernet to RS485 (DAT3580GW or DAT3580MBTCP). Make sure you have downloaded the USB drives.

Serial RS485 to a Modbus RTU Master.

Opening the Modbus RTU Controller Settings.

  1. Click the Settings tab.
  2. On the drop down menu click Controller.
Opening the Modbus RTU Controller Settings

Selecting the Communication parameters.

  1. On the Settings menu Click the Com port which the USB is connected to.
  2. Select the Baud rate and Stop Bit and click OK.
  3. The port should open like below.

If the port does not open due to not knowing the Com port settings, use the INIT link between G and F. This will set up the comms port to 9600 Baud rate, Stop bit 1. Now try and connect with the 9600 Baud rate.
Opening the Modbus RTU Controller Settings

Confirming Communication has happened and the device is set as the controller.

  1. The port is open and Com OK indicates that the Modbus RTU Master is communicating with the PC.
  2. Com port 3 is being used.
  3. The DAT9000DL is Address 10.
  4. Now Click the R button in the yellow box to populate the register table.
Opening the Modbus RTU Controller Settings
How is the DAT9000DL different from the DAT9000?

The DAT9000DL adds on-board data logging to removable media, supporting a built-in microSD card and an optional USB flash drive. It records selected internal or polled Modbus registers while retaining the same Modbus RTU/TCP communications and processing capabilities as the DAT9000.

How does the DAT9000DL know when to start logging?

You can flag a register to start logging or set a time-based schedule/interval. In DEV9K, configure a designated control register as the trigger and/or define the schedule for automatic logging.