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5.2 Calibration methods
Overview
This section specifies the different types of calibration and the calibration methods
that are supplied by ABB.
Types of calibration
Calibration method Description Type of
calibration
Calibration Pendulum
(standard method) The calibrated robot is positioned at home
position, that is when the positions of the axes
(angles) are set to 0º. Standard calibration
Standard calibration data is found on the SMB
(serial measurement board) in the robot.
For robots with RobotWare 5.04 or older, the
calibration data is delivered in a file, calib.cfg,
supplied with the robot at delivery. The file
identifies the correct resolver/motor position
corresponding to the robot home position.
CalibWare Based on standard calibration, and besides
positioning the robot at home position, the
Absolute accuracy calibration also com-
pensates for:
• Mechanical tolerances in the robot
structure
• Deflection due to load
Absolute accuracy calibration focuses on pos-
itioning accuracy in the Cartesian coordinate
system for the robot.
Absolute accuracy
calibration (option-
al)
Absolute accuracy calibration data is found
on the SMB (serial measurement board) in the
robot.
For robots with RobotWare 5.05 or older, the
absolute accuracy calibration data is delivered
in a file, absacc.cfg, supplied with the robot at
delivery. The file replaces the calib.cfg file and
identifies motor positions as well as absolute
accuracy compensation parameters.
A robot calibrated with absolute accuracy has
a sticker next to the identification plate of the
robot.
To regain 100% absolute accuracy perform-
ance, the robot must be recalibrated for abso-
lute accuracy!
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5 Calibration information
5.2 Calibration methods