BRACKET 9Y0898 - Caterpillar

Establishing An Elevation Reference
An elevation reference is the zero point for reach and elevation. You can use either of the following as an elevation reference:
A laser plane
A benchmarkElevation From A Laser Plane
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When you use the system to establish an elevation reference from a laser plane, and calculate the target depth directly from the laser, this is known as depth from laser. To use depth from laser, you must:
set up a laser transmitter
enable the laser catcher on your machine
make sure the system is not benched and can accept laser strikesThe system calculates elevation guidance as an offset from the height of the laser plane, as shown in Illustration 38.Elevation From A Benchmark
To establish an elevation reference from a benchmark, you must bench the bucketfocus point over a location with known elevation. This point is known as a benchmark.As you move around the site, you will need to transfer the benchmark. There are two ways of doing this:
Laser referencing
"Touch Point"Laser Referencing
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If you use Depth or Depth Slope guidance with an enabled laser catcher, you can use the laser catcher to transfer bench information from one location to another. After you have benched the system, and have a laser reference relative to the bench point, you can move the machine to a different operating location, as shown in Illustration 39.Refer to the following steps in order to initiate the Laser Referencing Feature.
Bench the system.
Place the bucket teeth on the benchmark.Do not physically move the benchmark.
Press the Bench softkey.Elevation and Reach are set to zero.
Enter a Target Depth (if desired) or select required depth memory.
Reference the laser.
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Move the laser catcher into the beam.
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Wait for "Laser" Softkey (35) to appear.
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Press "Laser" Softkey to accept laser strike.Laser Reference icon (36) appears.
Dig.
Move the machine.
Reference the laser.
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Move the laser catcher into the beam.
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Wait for "Laser" Softkey to appear.
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Press "Laser" Softkey to accept laser strike.Laser Reference icon appears.
Continue Digging."Touch Point"
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If you use Depth or Depth Slope guidance without a laser catcher, you can use "Touch Point" to transfer the elevation reference from one location to another. "Touch Point" is only available after you have benched the system and requires a common feature, such as a rock, that you can easily access from both locations. Using "Touch Point" transfers the zero (bench) depth from one working location to another, as shown in Illustration 46."Touch Point"Note: When using depth slope guidance, you cannot rotate the cab to reach the "Touch Point" location. You must reach the "Touch Point" in the digging orientation of the excavator arm.Refer to the following steps in order to initiate the Touch-Point Feature.
Place bucket focus point on common hard point.
Press the "Touch Point" Softkey on the display.
Move the machine.
Place bucket focus point on common hard point again
Press the "OK" key to accept or press the Escape key to cancel.