M41 - AUXILARY BUS EXPANSION BOARD Rev. 1M41 (Rev.1) User Manual Revision: 6/18/2010 1/6 M41 -...

M41 (Rev.1) User Manual

Revision: 6/18/2010 http://cnc4pc.com/TechDocs/M41R1_User_Manual.pdf 1/6

M41 - AUXILARY BUS EXPANSION BOARD Rev. 1

User manual Rev. 1

1. Overview

This board serves as an interface board for outputs expansion boards provided by

CNC4PC (M22, M26 and M28) and the Pokeys55 Auxiliary Bus.

2. Features

• Up to 3 M41 boards connected in cascade using the Pokeys Auxiliary Bus.

• Support up to 2 output expansion boards.

• Provide up to 24 Outputs.

• 5 wires board to board cable to connection with the M2 “PoKeys55 MOTHERBOARD”.

M34 (Rev. 1) User Manual

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3. Requirements

The board is powered through the M2 “PoKeys55 MOTHERBOARD”. The “5 wires board to board” ribbon cables powers each board.

4. Board description

Auxiliary Bus Input Connector: Use the provided ribbon cable to connect to the

Auxiliary Data Bus connector on the M2 or another board or series of boards that

are connected to an M2 board.

Auxiliary Bus Output Connector: Use this optional connection for connecting

another expansion board with the Auxiliary Data Bus.

Expansion Port connectors (1 and 2): Allows connecting regular expansion boards

designed to be connected to the main ports of the M2. Currently these boards are:

- M22 – 12 x Discrete +5vdc TTL Optoisolated Outputs.

- M26 – 12 x Relay Boards.

- M28 – 12 x +24vdc Output Signals.

M34 (Rev. 1) User Manual

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5. Wiring diagrams

Fig. 2 M41 wiring diagram

PoKeys55 enables user to add 10 8-bit shift registers to the outputs of the PoKeys55 device.

M34 (Rev. 1) User Manual

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Fig. 3 Auxiliary Bus configuration

Each M41 supports 3 of the 10 bytes.

If two expansion boards are connected to the M41, its outputs will be associated to

the following 3 bytes how is shown in the below figure.

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Fig. 4. M41 Bits Assignment

Where MSB and LSB are respectively the “Most Significant Bit” and the “Least

Significant Bit” of every Byte.

M34 (Rev. 1) User Manual

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6. Configuring the Auxiliary Data Bus in Mach3. Go to Plugin Control / PoKeys Config and select the Cfg. 80 pin out Aux. Bus.

Assign the LEDs that need to be assigned outputs. The LEDs then can easily be accessed through screens or brains.

M34 (Rev. 1) User Manual

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7. Dimensions.

All dimensions are in Millimeters

Disclaimer: Use caution. CNC machines could be dangerous machines. DUNCAN USA, LLC or Arturo Duncan are not liable for any accidents resulting from the improper use of these devices. The M41 is not fail-safe device, and it should not be used in life support systems or in other devices where its failure or possible erratic operation could cause property damage, bodily injury or loss of life.