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Modbus I/O Module 12VDC PoweredKTA-224
Product Number: KTA-224
Click image to enlarge
Description: The KTA-224 is a Modbus Slave IO module for interfacing to any PLC or PC using the Modbus protocol. It behaves as a Modbus Slave and Relays, Inputs and Outputs are controlled by writing to and reading from the Coils and Holding Registers. It can be used for many applications such as controlling lights and sprinkler systems, reading sensors and monitoring switches and other digital signals, or even for industrial control.

The module can connect to a standard RS485 2-wire half duplex network or to a computer via USB. When connected via USB, the module acts as a USB to RS485 converter and multiple IO units (or other Modbus devices) can be connected to the RS485 bus. USB drivers are available for Windows, Mac and Linux.

The user can save a set of output statuses to be loaded when the unit is powered up or reset. A watchdog timer can be configured to reset the unit after a user-definable number of seconds since the last communication from a Modbus master.

Product #: KTA-224

Skill Level: Assembled and Tested

Additional Details:
Click here for full documentation

Download Test Utility Program

Features 8 Relay outputs (5A, 250VAC contacts) 4 Opto-Isolated Inputs with counters 3 Analog Inputs (10 bit) jumper-selectable for 0-5V or 0-20mA 4 Input Counters RS485 or USB (virtual serial port) Can be used as a USB to RS485 converter Watchdog Timer resets the unit when communication from the network master is lost Connections via Pluggable Screw Terminals 1200-38400 Baud Modbus Slave Device Specifications Power Supply Vs and COM: KTA-224: 9-16V DC (12V Nominal) ~200mA + External 5V drain KTB-224: 18-32V DC (24V Nominal) ~200mA + External 5V drain Analog Input ANx: 0-5V: ~500kΩ effective resistance with no jumper installed 0-20mA: ~250Ω effective resistance with jumper installed Opto-Isolated Input: 0-30V, ~1kΩ effective resistance Relay Outputs: SPDT relays rated to 5A (resistive). 250VAC / 30VDC 5V Auxiliary Supply 5V: 200mA

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Quantity:  

4  
in stock and available for immediate shipment.

 
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Unregulated Wall Transformer 120VAC to 12VDC 500mA
Click here for detailed specs.
Specifications:
  • Input voltage: 120VAC@60Hz
  • 2-wire
  • Output voltage: 12VDC
  • Output current: 500m
  • Output plug: 2.5mmID x 5.5mmOD female center positive
  • Dimensions: 2.50"H x 2.08"W x 1.68"D
  • Case color: black
  • DC cord length: 6'
  • Agency approvals: UL, CSA
Read More
  Assembled and Tested  
  BB204  
  48  
Quantity:  

USB/RS485 I/O Controller (Relayduino)
tn_kta-223.jpg
KTA-223 ‘Relayduino’ USB/RS485 IO Module:

The KTA-223 is a USB or RS485 controlled IO module for interfacing PCs to real world applications, such as controlling lights and sprinkler systems, reading sensors and monitoring switches and other digital signals. The Relays are capable of switching up to 5A at 250VAC, 10A at 120VAC and 10A at 24VDC but the PCB tracks will only handle up to about 5A. A simple ASCII protocol allows control from Windows/Mac/Linux using either USB Virtual COM drivers or RS485. Additionally, multiple devices can be connected to one RS485 bus, allowing control of many devices from one USB port. 

The controller is based on the hardware of the Arduino physical computing controllers. It can be programmed as a stand-alone controller using the free, open source Arduino environment. Internally, the controller is “shield compatible”, allowing the use of many extension boards designed for the Arduino Deumilanove. As shipped the controller is loaded with a sketch that receives simple commands over the USB or RS485 serial port and switches relays or responds with the status of inputs. 

Multiple controllers can be connected to one or more PCs in an RS485 network. Each controller can be assigned an address and will respond to commands addressed to them. 

Features:

  • 8 Relay Outputs 5A 250VAC
  • 4 Opto-Isolated Inputs 5-30VDC
  • 3 Analog Inputs (10 bit)
  • Connections via Pluggable Screw Terminals
  • 0-5V or 0-20mA Analog Inputs, Jumper Selectable
  • 5A Relay Switching
  • Power Indicator LED
  • All enclosed in Professional looking plastic case
  • Arduino Compatible
  • Accepts Arduino Shields (Ethernet / XBee)
  • USB Virtual Serial Port or RS485 Input
  • Easily connect multiple units far apart by RS485
Read More
  Assembled and Tested  
  KTA-223  
  4  
Quantity:  

Serial Isolated I/O Module (Kit)
Click here for specs, downloads and more pictures.
Description: 8-Relay Module (mains rated - 110V and 250VAC.) An extension of our Kit CPS74 (see next kit), PC controlled 8-Relay Board with 250V switching relays and added features. It is in a plastic case, latched relay operation, 250V relays switched in safety by using Dinkle connectors, and with 4 external inputs. Uses serial port so it can be located over 100 yards from the PC. Comes with case and end panel pieces as shown in the photos. Requires a center positive 9-to-12V DC power supply, at least 500mA, 2.5mm jack.
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  Kit - Basic Soldering Required  
  CPS108  
  17  
Quantity:  

Upgrade K108 - join two k108 together
Click here for specs, downloads and more pictures.
CPS108/CPA108 has been a good seller. This kit is to connect two of them together to give 6 Inputs and 16 Relay Outputs. All you have to do is change the firmware, change the front & back panels, and jumper out 2 ICs.
(BB086)
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  Kit - No Soldering Required  
  BB086  
  3  
Quantity:  

PC Printer Port Relay Board (Assembled) (version 2)
Click here for detailed specs.
 (Out of Stock)Do you have an old PC lying around the house which absolutely no one wants? Then you can convert it into a dedicated controller. Communicate with the real world via the parallel printer port on your PC. Simply connect a DB25 straight trough cable from computer to DB25 connector on the relay board. There are 8 relays each capable of switching 12VDC/10A or 240VAC/5A. Each relay has an LED to indicate when it is operated. We provide two sets of complete, stand-alone software to control the relays: one works under DOS so you can write your own batch files to control individual relays, the other works under Windows. Needs 12VDC center positive 2.5mm power supply. PCB Size 6.75" x 2.75" (CPA74)
Read More
  Assembled and Tested  
  CPA74  
  0  
Quantity:  

PC Printer Port Relay Board (kit) (version 2)
Click here for detailed specs.
Do you have an old PC lying around the house which absolutely no one wants? Then you can convert it into a dedicated controller. Communicate with the real world via the parallel printer port on your PC. Simply connect printer cable from computer to Centronics connector on relay board. There are 8 relays each capable of switching 12VDC/10A or 240VAC/5A. Each relay has an LED to indicate when it is operated. We provide two sets of complete, stand-alone software to control the relays: one works under DOS so you can write your own batch files to control individual relays, the other under Windows 3.1. Needs 12VDC center positive 2.5mm power supply. PCB Size 6.75" x 2.75" (version 2) (CPS74)
Read More
  Kit - Basic Soldering Required  
  CPS74  
  8  
Quantity:  

8 Relay 8 Analog USB IO Controller 12 V
Click here for specs, downloads, and more pictures!
 (Out of Stock)Description: The KTA-225 is a USB or RS485 controlled IO module for interfacing PCs to real world applications, such as controlling lights and sprinkler systems, reading sensors and monitoring switches or analog signals. The Relays are capable of switching up to 5A at 250VAC, 10A at 120VAC and 10A at 24VDC but the PCB tracks will only handle up to about 5A. A simple ASCII protocol allows control from Windows/Mac/Linux using either USB Virtual COM drivers or RS485. Additionally, multiple devices can be connected to one RS485 bus, allowing control of many devices from one USB port.

The KTA-225 has relays with 12 V DC coils and requires an 9 to 15 V DC supply.

This controller is based on the hardware of the KTA-223 controller, but the number of analog inputs has been increased at the cost of the digital inputs. It can be programmed as a stand-alone controller using the free, open source Arduino environment. Internally, the controller is “shield compatible”, allowing the use of many extension boards designed for the Arduino Deumilanove. As shipped the controller is loaded with a sketch or program that receives simple commands over the USB or RS485 serial port and switches relays or responds with the status of the analog inputs.

Multiple controllers can be connected to one or more PCs in an RS485 network. Each controller can be assigned an address and will respond to commands addressed to them.


Features:

  • 8 Relay Outputs 5A 250VAC
  • 8 Analog Inputs (10 bit)
  • Connections via Pluggable Screw Terminals
  • 0-5V 0-3.3V or 0-20mA Analog Inputs, Jumper Selectable
  • 5A Relay Switching
  • Power Indicator LED
  • All enclosed in Professional looking plastic case
  • Arduino Compatible
  • Accepts Arduino Shields (Ethernet / XBee)
  • USB Virtual Serial Port or RS485 Input
  • Easily connect multiple units far apart by RS485
    Read More
      Assembled and Tested  
      KTA-225  
      0  
    Quantity: