#### Numerex tab

Machine Options dialog box - Numerex tab

The Numerex tab allows you to configure the following settings for the Numerex interface.

DRO - Select this option if your system uses a DRO to read the scales.

DRO Comm - Specify the COM port for the DRO unit.

PH9 - Select this option if you are using a PH9.

4800 N 8 1 - Select this option if your PH9 unit need to use these communication settings rather than the default of 4800 baud NO parity 7 bits 2 stop bits (48007N2). Usually, you need to select this option if it is a ceramic CMM (a newer CMM). If the CMM is older, you will need to deselect this option.

PH9 Comm - Specify the COM port for the PH9 unit.

DCC Controller Comm - Specify the COM port for the DCC Controller.

Key Board Comm - Specify the COM port for the Keyboard.

Use Tech 80 - Select this option if your system uses a Tech 80 board to read the scales.

Tech 80 IRQ - This value sets the interrupt level for the Tech80 board. Make sure it matches the jumper setting and also the WNS27 registry settings.

Tech 80 XYZ Scale - These XYZ Scale options allow you to specify the scale factor for each axis if a Tech80 is used. This is normally a value of 200.0. A simple way to test if this value is correct is to measure the distance between to known points, if there is a difference between measured and true readings then you can work out the correction factor that you can use to determine the value, it is almost always a round value i.e. 100, 1000, 500 etc. A rudimentary form of linear error compensation (linear stretch) can be performed by slightly changing this value.

In Position Tolerance - This value sets how close the machine must get to a commanded position before it accepts that it is there. If the machine seems to pause between moves for excessive time then you could try increasing this value.

Acceleration - This option sets the acceleration of the CMM during DCC moves. The default value is 1500. If the CMM is a little too jerky in starting and stopping a move, lower the acceleration value.

Top Speed - This option is simply a multiplier of the machine speed allows you to govern the maximum speed of the machine. It should be adjusted so that 100% speed in PC-DMIS matches the full speed of the machine.

DCC Machine - The only time this option should NOT be selected is for debugging purposes when you wish to test the DRO without running this as a DCC machine. If this is a manual machine then the straight Tech80 interface should be used.

Has Home - Select this option if the machine has a home position. It must be selected if you are using a comp map.