Setting up electronics and network for the HPC LS3020¶

• Table of contents
• Setting up electronics and network for the HPC LS3020
  • Power supply
  • Stepper motors and limit switches
    • HPC-flat-cable-pinning.jpg
  • Ethernet networking

This will show you how to install the mainboard in your HPC laser and get you operational. Have your mainboard (rev2 or rev3) assembled and tested, and download the correct Configuration file for the controller.

Power supply¶

There are different types of power supply and different ways to hook up the stepper motors and limit switches:

The original power supply has these connectors:

it's pinout can be found here: HPC_original_power_supply

The new July 2012 version has these connectors:

it's pinout can be found here: HPC_July_2012_power_supply

Both power supplies have a 3-pin cable with a Phoenix connector to connect to the LaOS board. {| style="color:black; background-color:#ffffcc;" cellpadding="10" cellspacing="0" border="1"
!Signal!!Connect to |- |RED||+24V||J5.1 VMOT |- |YELLOW||GND||J5.2 GND |- |BLUE||+5V||J5.3 VCPU |- |}

Stepper motors and limit switches¶

There are two (known) versions:

• one with a JST connector for the X-axis stepper motor and for the limit switches
• one with a 12-pin flatcable combining X-axis stepper motor and limit switches

HPC-flat-cable-pinning.jpg¶

The combination new power supply with flat cable is described on the HPC LS3020 connections - July 2012 page.

Ethernet networking¶

The LAOS board needs to be hooked up to your Ethernet network. The protocol used is TFTP, which requires either the LAOS CUPS driver or Visicut on your computer to talk to it.

There is a "net.dhcp" configuration parameter in the LAOS configuration file on the mbed, which causes the LAOS board to obtain an IP address via DHCP if set to "1". The default config file causes the LAOS board to listen on port 69 ("net.port 69").

If you don't want to use DHCP, you'll need to manually set a couple of network parameters in that same config file.