Another new GEM variable is a 2-byte integer GemLimitsDelay (VID 142). This allows the Host to monitor
some of the other variables to see whether they go out of a specified range. The value to be placed into
GemLimitsDelay is the number of seconds to wait between tests of these other variables. The following
variables are eligible for monitoring. The Host program may specify a minimum and maximum for each, so
that it will be notified if those bounds are exceeded. The limits given in this list are extremes. The Host
program may select a narrower range if that is desired, but may not select limits outside these extremes.
VID Name Extremes
19 Water Temperature 4 to 30 degrees Celsius
119 Coarse Feed Rate 0 to 8 microns per second
120 Fine Feed Rate 0 to 2 microns per second
121 Coarse Grind Force -10 to 65 pounds
122 Fine Grind Force -10 to 50 pounds
123 Coarse Wheel Z Position 0 to 10,000 microns
124 Fine Wheel Z Position0 to 10,000 microns
125 Coarse Probe Reading -300 to 24,000 microns
126 Fine Probe Reading -300 to 24,000 microns
127 Coarse Vacuum Reading -30 to 30 inches of mercury
128 Fine Vacuum Reading -30 to 30 inches of mercury
129 Coarse Coolant Flow 1.5 to 5 gallons per minute
130 Fine Coolant Flow 1.5 to 5 gallons per minute
131 Coarse Motor Current 0 to 12 amperes
132 Fine Motor Current 0 to 12 amperes
139 Coarse Wheel Wear -100 to 5000 microns
140 Fine Wheel Wear -100 to 5000 microns
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