Remote I/Os via CANbus

There are two types of Remote I/O via CANbus:

• EX-RC1
  The EX-RC1 enables you to distribute I/O Expansion Modules throughout your system. The adapter is connected to a master PLC by
  UniCAN, Unitronics’ proprietary CANbus protocol, and functions as a slave device within that network. Each adapter may be connected to up to 8 I/O expansion modules. The network may include up to 60 devices.
  
  Using the EX-RC1
  

  

  The EX-RC1 is run by a factory-installed VisiLogic application.

  Note that this application supports any combination of digital I/Os. If your system includes only digital I/O Expansion Modules, simply upload this application and modify the Hardware Configuration to match the one in your project. If your application is based on analog modules, note that Unitronics offers sample applications supporting analog I/O modules.

  The EX-RC1 network ID number is determined by DIP switch settings, and cannot be changed by the software application. The switch setting represents the ID number as a binary value as shown in the following figures.

  Unit ID	1	2	55	15
  Settings

   

• Remote High-speed Module EXF-RC15
  The EXF-RC15 is a stand-alone high-speed Remote I/O Module. It offers digital inputs and outputs, including inputs that you can wire to function as high-speed counters, and outputs that you can wire to function as high-speed PWM/PTO outputs. For more information on wiring, refer to the module's technical specifications and installation guides in the Technical Library on the Unitronics website.
  
  Using the EXF-RC15

  The EXF-RC15 functions as a node in a Vision UniCAN network.  It connects to the Vision controller via CANbus; note that you download programs via USB port). 

  1. Select the EXF-RC15 in Hardware Configuration. Note that since it is a stand-alone module, it cannot be connected to other I/O modules.
     
     
     

  2. Click on the EXF-RC15-IO button to open and configure the I/Os.
     
     
     
     

  3. Configure communications: in the Main Routine of your application, as a Power-up task, place a COM Init function set to UniCAN and assign a PLC ID number as shown in the following image.
     
     

   

  You can find sample applications for PTO and PWM in the Examples folder \Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\EXF-RC15.