M-Series Operator’s Manual 4/9/15
9-7
Probe / TT-1 Parameters
Various probing parameters can be set on the Machine Parameters screen (see Chapter 14). Make sure you enter
these parameters before you begin using the probe and/or TT-1. If these parameters are not entered properly,
damage to the probe or TT-1 may result.
Probe Type (Parameter 155) – This specifies the probe type being used. This needs to be set to 0 if you are using
a standard Mechanical probe.
Probe PLC Input Number and Contact State (Parameter 11) - A single value, +/-1 through 240. A positive
number indicates Closed on contact; a negative number indicates Open on contact.
TT1 PLC input number (Parameter 44) - This parameter is the input number that the TT1 is wired into on the
PLC. If a shared PLC input is used for both the TT1 and the probe, then the value can be left at zero or set to the
same value as parameter 11.
Probe Tool Number (Parameter 12) - A single value, 0 through 200, used to look up the length offset and tip
diameter of the probe in the Offset Library.
Recovery Distance* (Parameter 13) – The additional distance the probe moves off of a surface after contact is
broken, before attempting to traverse parallel to the surface.
Fast Probing Rate* (Parameter 14) - Used for positioning moves and initial surface detection, this parameter is
determined by machine response and permitted probe deflection as well as desired tolerance. The default setting is
25 inches/min.
Slow Probing Rate* (Parameter 15) - Used for final measuring moves, this parameter is determined by a
speed/accuracy tradeoff. The default setting is 3.5 inches/min.
Maximum Probing Distance (Parameter 16) - The maximum distance that a probing cycle "searches" for a
surface in a given direction if no travel limits have been entered. The default is 10 inches. A larger value should
be entered for the hole and slot cycles if you are measuring very large features.
Detector Location Return Point (Parameter 17) - A Zero (0) indicates that tool measurement will take place at
the current position, a 1 or 2 indicates the number of the G30 reference point to use which specifies the X, Y
location of the TT1 (WCS Configuration).
*Mechanical type probe only. Please see the DSP type probe section below for differences.
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