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  • RS485 Modbus Master with digital IO.

    • Modbus RS485 Master.
    • Modbus RS485, RS232 Slave.
    • Modbus Ethernet 10 Base-T Modbus TCP.
    • 4 Digital Inputs.
    • 2 SPDT Relay Outputs.
    • Function Block Programming.

RS485 Modbus RTU Master DAT9000IO with Digital inputs and relay outputs

General Description

The Modbus RTU Master DAT9000IOis a Data Acquisition and controller unit that can be used as a Modbus Master or Modbus Slave. The DAT9000IO also has 4 Digital inputs and 2 Relay Outputs. The input are digital on state above 10 Volts and off below 3 Volts. The 2 relays are SPDT. The DAT9000IO also has an Ethernet 10 Base-T MODBUS TCP Interface and an RS232 port. The DAT9000IO is capable of processing logical and mathematical functions enabling the DAT9000IO to provide Alarms, Linearization, Scaling, Averaging and Square root extraction to name a few.

4 Digital Inputs.
2 Relays.
Power Supply Voltage 18-30Vdc.

45 to 100 mA..
PC Configurable.
Between Input/Output/Power Supply 1500Vac.
For Industrial environments
Immunity EN 61000-6-2
Emission EN 6100-6-4
Material self-extinguishing
Dimensions W x H x T
4" x4 3/4" x 7/8"
100 x 120x x 22.5 mm
Weight 3 oz 90 g
Operating Temperature -4°F +140°F -20°C +60°C
Storage Temperature -40°F +185°F-40°C +85°C
Humidity (non condensing) 0-90%



Input 4 Channels.
Threshold 0-3 Volts OFF 10-30V On.
Frequency 300 Hz Maximum.
Output 2 Relays SPDT 2 Amp at 250 V.
RS485: Port 1 Modbus RTU Master, Port 0 Modbus RTU Slave.
RS232: 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, DIP Switches.


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  
Digital Input Common Input
DI0 Pin 12 Pin 13
DI1 Pin 12 Pin 14
DI2 Pin 12 Pin 15
DI3 Pin 12 Pin 16
Relay 0 K NO L NC M
Relay 1 N NO O NC P

DAT9000IO wiring Diagram.


  • Modbus Slave with digital input and relays out.
  • Mathematical and Logic functions.
Back to General Description