This optional cable assembly from the I/O board of the Haas machine to a connector on the side of the control cabinet provides M-code/MFIN capability for controlling external devices. Allows an M-code to pause a CNC program, send a start signal to the device, and then resume the program when an MFIN (finished) signal is received from the device.

Once installed an accessory with a 4-pin male Amphenol 703-91-T-3300-1 screwlocking plug (Haas P/N 74-1510) can be controlled by the CNC machine.

This Document Applies to the following Kits:

• 93-APC-READY AUTOMATIC PALLET CHANGER READY
• 93-1000274    AUTOMATIC PALLET CHANGER READY
• 93-1000651    AUTOMATIC PALLET CHANGER READY
• 93-2395    AUTOMATIC PALLET CHANGER READY, NGC
• 93-2396    CABLE ASSY FOR MCODE/MFIN CAPA, NGC
• 93-1000307    M-CODE/MFIN CABLE ASSEMBLY
• 93-MFININ    CABLE ASSEMBLY FOR MCODE/MFIN CAPA

Turn off power to the machine and open the control cabinet door.

Remove the plug from the side of the control cabinet.

Install the M-FIN connector in the side of the control cabinet. To do so, remove the nut from the plug, insert the wires [1] through the holes from the outside of the control cabinet.

Thread the wires through the nut and tighten the nut [2] against the control cabinet.

Connect the two wires. One pair of wires has a plug on it which is installed to P8 on the NGC I/O PCB.
Note: For Classic Haas Machine connect the plug to P10 on the I/O PCB.

The second pair of wires is made up of a red and black wire. These two wires are installed differently depending on machine options.

If the machine Does Not have an M-Code relay board the wires are connected to the M21 relay on the I/O PCB. Connect the red wire to the M21 N/O (normally open) terminal and the black wire to the M21 COM (common) terminal.

If the machine Does have an M-Code relay board the wires are connected to the M21 relay on the M-Code Relay Board. Connect the red wire to the N/O (normally open) terminal and the black wire to the COM (common) terminal.

Accessories are connected to the CNC control through the M-Fin plug. The accessories are then commanded using the M-Codes. 

M-FIN Plug Diagram

1. Signal (MFIN Input)
   
   Important: Use a relay to activate this input. Do not apply voltage to this input. When a M-Fin signal is sensed the diagnostic #18 M_FIN_INPUT bit will toggle.
   
   
2. Ground
3. Normally Open (N/O)
4. Common (COM)