Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 860)

Error and System Messages
Section 16
16-40
Message Description
SERVO BUSY DURING HOMING OPERATION This error indicates that the servo processor was unable to respond during a homing operation.
It can occur under the unusual condition resulting from two or more servo axes reaching their
home point simultaneously. Generally, the axes can be re-homed with no problems.
SERVO CONFIGURATION ERROR The AMP servo configuration is inconsistent. An example of this error would be if the
downloaded AMP file were configured for only two axes, when the AMP parameter “Number of
Motors on First Board”was set for three.
SERVO COMMUNICATIONS ERROR A communications error occurred between the control and the servo module.
SERVO CURRENT LOOP ERROR While running an axis, the allowable current loop proportional error or current loop integral error
has gone out of range.
SERVO INTERFACE FAILURE The servo interface diagnostics performed on power-up have failed. Attempt to power up again.
If the error remains, contact Allen-Bradley customer support services.
SERVO POS & VEL FB SIGN ERR This is a power turn-on error which occurs when the signs of the position and velocity feedback
devices do not match when a common feedback port is used for both.
SERVO POWER UP SEQUENCE ERROR The servo processor diagnostics performed on power-up have failed. Attempt to power up
again. If the error remains, contact Allen-Bradley customer support services.
SERVO POWERUP DIAGNOSTICS FAILURE The servo module diagnostics performed on power-up have failed. Possible causes include
incorrect servo AMP parameters being downloaded. An example would be configuring AMP for
five axes when there is only one servo module installed.
SERVO PROCESSOR ASSIGNMENT ERROR Too many servos were AMPed or a servo was assigned to a non-existent servo processor. The
system is held in E-Stop. The message indicates an error in the total number of fitted axes and
spindles, or in the AMPed values of:
Number of Motors on 1st board
Number of Motors on 2nd board.
SERVO PROCESSOR OVERLAP The analog version of the servo sub-system provides fine iteration overlap detection. This
message is displayed if the fine iteration software on the DSP does not execute to completion in
one fine iteration.
SERVO PROM CHECKSUM ERROR The checksum test on the servo processor software stored in PROM memory has failed. This
test is performed on power-up and periodically while the system is running. Contact
Allen-Bradley customer support services.
SERVO PTO DIAGNOSTICS FAIL The servo card has failed its power-up diagnostics. Consult Allen-Bradley customer support
services.
SERVO PTO SEQUENCE ERROR The servo card has failed its power-up diagnostics. Consult Allen-Bradley customer support
services.
SERVO TIME-OUT READING ABSOLUTE ENCODER During power-up initialization of the position registers or during a homing operation, the servo
processor has failed to return a read within the required time after the absolute position has
been requested by the main processor. Consult Allen-Bradley customer support services.
SERVO TIME-OUT READING FEEDBACK During a homing operation, if there is an error reading feedback from the servo module, this
message appears. This usually occurs when the system scan time is close to the threshold at
which PAL execution can just complete and when homing more than 3 axes at a time. This
error can be avoided by homing axes individually or increasing the system scan time in AMP.
SET ZERO NOT ALLOWED ON: A set zero operation on the specified axis is not permitted. Typically this is because either the
control is not in manual mode, or the selected axis is in the process of being jogged.
SHAFT VALUE > NUMBER OF POCKETS An attempt was made to assign a shaft pocket that is greater than the number of pockets
assigned for that custom tool. The shaft pocket number must be a value between 1 and the
number of pockets assigned to that tool.
SHARED AXIS CONFIGURATION ERROR Either there are too many shared axes configured, a shared axis has the same name as some
other axis in the system, the diameter axes on a lathe are shared axes, or some other
miscellaneous configuration error occurred.