Each SIM-board type has specific connections (nodes) to which you can connect your hardware items. It is important that you refer to these connection diagrams when wiring up your devices to ensure that they are terminated at the correct node on the board.

View Rotary Encoder Module Wiring Diagram

In addition to the specific connections for this board, there are some connections common to all SIM-board types:

• DC power source socket
  This accepts a standard 2.1mm jack (positive center) to power the SIM-board stack. Only the master board in the stack (the one at the bottom) requires this connection. The power is shared by the inter-board ribbon cable connections.
  
  
• PC serial D-socket
  This accepts the plug on the PC serial cable (supplied), the other end of which connects to the PC serial port at the back of the computer. Alternatively, if your computer does not have a serial port fitted, you can connect the cable to a USB-to-serial converter cable and run the SIM-board via this link.
  
  
• "Outgoing (to next)" ribbon cable connection
  This accepts one end of the inter-board ribbon cable (supplied).
  
  
• "Incoming (from previous)" ribbon cable connection
  This accepts the other end of the inter-board ribbon cable, and should only be connected to the next board higher up in the stack than the board with the other end of the cable connected. For the master board, this connection remains unused (unconnected).
  
  
• "PWR SWITCH"
  This finger-operated jumper switch controls the on/off state of the entire board stack. It is only usable on the master board; the switch has no function on the slave boards in the stack. When positioned towards the center of the board in the direction of the "on" arrow on the switch, the power to the stack is enabled and the stack is "on". When positioned towards the board edge (opposite to the direction of the "on" arrow on the switch), the power to the stack is removed and the stack is "off".
  
  
• "(EXT SWITCH)" screw terminal connection
  This connection can be used to replace the functionality of the "PWR SWITCH" on the master SIM-board by connecting a suitable switch to the 2 screw terminal connections and ensuring the finger-operated "PWR SWITCH" is positioned to "off". The external switch connected to these terminals now controls power to the SIM-board stack. This is useful if you wish to wire up a dedicated switch to house within your simulator environment to control the power to your SIM-boards, while housing the boards themselves in a secure place.