C75A64
Signal low =Too far
from magnetic ring
a) Do a Complete rebooting
sequence.
b) Check grounding and
shielding for EMC problems.
c) If this happens more than
two times in a row, replace
joint
C75A128
Signal saturation
=Too close to
magnetic ring
a) Do a Complete rebooting
sequence.
b) Check grounding and
shielding for EMC problems.
c) If this happens more than
two times in a row, replace
joint
C75A200
Position from joint
encoder does not
change while motor
is running
C76A
Joint encoder
communication CRC
issue
Error between sensor and
joint circuit
Check connections or very
heavy electrical noise
C77A
Sudden position
change detected on
the joint-encoder
The position reading from
the encoder was different
than expected.
C78A
Large sudden
position change
detected on the
joint-encoder
The position reading from
the encoder was severely
different than expected, the
latest measurement was
discarded. The argument
relates to the size of the
position change.
C85A200
Position from motor
encoder does not
change while motor
is running
C85A
Motor encoder error
C100A
Robot changed mode Status warning, general
mode change
Check preceding errors in log
history
C101A
Real Robot
Connected
C102A
Real Robot not
connected –
Simulating Robot
UR5
114
Service Manual
7. Troubleshooting
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