SLC2000 CNC System Details

• Basic central computer unit is a sheet metal chassis approx. 360 x 350 150(height);
• Can be wall or floor mounted (or on angle brackets, etc.).
• Mfg. /assembled by SLC2000 CNC.

It contains:

• Industrial power-supply 110watt. Universal input.
• Outputs: +5v, + 12v, -12v
• Auxiliary power supply:
• (I) 15v rails for analog functions.
• (II) +24v floating unregulated "field" supply for pushbuttons, relays, lamps, etc.
• Cooling fan
• Mains inlet.
• Mains outlet (for VDU).
• Floppy disk drive
• Hard disk drive, or (recommended) Disk-on-Chip flash disk.
• 8-slot ISA-bus motherboard (passive). Other boards plug into this.
• Processor board... single-board-computer with 586-133MHz CPU (typical), RAM, hard and floppy disk drivers, COMS ports (DB9 connectors on the back plane), keyboard interface, etc.
• VGA card (or other as required to suit LCD monitor)
• "3AXIS" card (design/mfg. by SLC2000 CNC)
  • One card caters for three axes via three DB 15 high-density back plane connectors. Each connector has provision to receive an encoder (3-channel, 5volt, line-driver) and to issue an analog command signal (16-bit, -10v to +10v) to a servo-drive unit. Usually extra DB9 connectors are attached (adjacent back plane slot), to separate the analog from the encoder signals for wiring convenience.
  • "SIOCARD" (mfg./design by SLC2000 CNC)
  • Watchdog safety-feature.
  • Analog resources (via DB25 back plane connector)
    • Four inputs (12 bit, 0 to 10 volts), typical usage for height-following system and assist-gas pressure monitor, etc.
    • Three outputs (16 bit, -10v to + 10v), typical usage for laser-power command and gas-pressure command, etc.
• Digital I/O and data
  • These operate via high-speed serial interface (one milli-second iteration time)... connecting to OUTSTATION cards (see below) which can be remotely located. Total capacity of serial data:
    • 96 digital inputs (sourcing) 96 digital outputs (sinking)
    • 12 data items such as m.p.g. (hand wheel) and analog inputs suitable for fascia panel pots, etc.
  All the serial data is opto-isolated from the computer system - powered by the 24v "field" supply.
• "IODIST" card (mfg./design by SLC2000 CNC).
  • This passive card has DB15 connectors to distribute the serial I/O to OUTSTATION cards.
• "PULSER" card (mfg./design by SLC2000 CNC)
  • This is optional card available for laser systems. Generates a pulse-train to be delivered to a laser unit (TTL, line-driver, 20mA interfaces all provided.) Allows the CNC to command pulsing (frequency and duty are user- programmable), including dynamic power control (power-ramping effect produced by varying the duty).
  • Frequency Range: 0 to 5000Hz (1Hz resolution).
  • Duty: 0 to 100%
• "OUTSTATION" cards (mfg./design by SLC2000 CNC).
  • These connect to the SIOCARD via serial communication indicated above. The number of OUTSTATION cards in a system is variable, depending on requirements. Each card has capacity for four analog inputs (12 bit, 0 to 5 volt) and one m.p.g. input (open collector signals), and eight/sixteen/twenty- four (configurable) digital inputs and outputs.
• Keyboard... (mfg./design by SLC2000 CNC)
  • IBM-AT compatible.
  • Intended for fascia-panel mounting.
  • Flat, sealed panel (polyester membrane overlaying short-travel highly tactile key switches).
  • Compact layout: 420 x 100 visible area.
• SOFTWARE
  • MSDOS - licensed copy with each system. Executive software (by SLC2000 CNC) can be customized. Real-time motion control for up to six axes; user-program interpretation and execution; keyboard and screen interfacing (operator interface); simultaneous PLC execution; simultaneous user-program loading (via DNC or disk); simultaneous program editing via keyboard; "pre-check" graphics.
  • On laser systems the exec. software typically includes modules relating to height-following, laser-power control, gas-pressure control and monitoring, etc.
  • Configuration files (man-readable text) for machine-parameters, M-codes, G-codes, resident subprograms, etc.
  • Auxiliary program (by SLC2000 CNC) for PLC setup and documenting, using onscreen editing of ladder-logic diagram; compiles a run-time file in machine-code.