Kipp&Zonen 2AP Sun Tracker - Manual (Page 94)

REFERENCE INFORMATION
93
8
Maximum Velocity Exceeded:
The command attempts to operate the motor beyond its velocity limit. The 2AP will not accept this
command.
9
Maximum Acceleration Exceeded:
The command attempts to operate the motor beyond its acceleration limit. The 2AP will not accept
this command.
A
Instrument Is Operating Autonomously, Command Rejected:
The command attempts to control the motors whilst the instrument is operating autonomously (e.g.
searching for the reference sensors). Whenever the instrument is operating autonomously it is
using the path queue for its own activities. Consequently, it cannot accept commands at that time.
When the instrument first starts up, it operates autonomously until it finds the reference sensors.
Similarly, in response to HOme and CLear commands, the instrument clears the path queue and
operates autonomously until the command is completed. Finally, whenever the instrument
completes a path, the relevant motor operates autonomously until the motor has been stopped.
B
Invalid Adjustment Size:
Physical motor position has been adjusted with an amount greater than the allowable limits. The
maximum adjustment size cannot exceed 4°. An invalid adjustment is reduced to the maximum
adjustment size.
C
Invalid Total Adjustment:
Physical motor position has been adjusted with an amount greater than the allowable limits. The
total adjustment must not exceed 4°. Any invalid total adjustment is set to ±4°.
D
Duration Out Of Range:
Durations must be positive and may not exceed 65533 internal time slices, slightly over 10 hours.
The SYnchronize command can generate a number of path segments. Each segment entails no
motion for a duration within the above limits. The total wait period cannot exceed 100 path
segments (about 1000 hours) and cannot be negative.
E
Attempt To Read Unavailable Analogue Input:
The Analogue command verifies that the appropriate sensor is attached to the analogue port
before attempting to read the sensor. This test determines that the analogue input requested is not
currently available to be read.
F
Illegal Extent Specified:
The software travel limits must be specified in revolutions from the reference sensor. The lower
limit must be between -1 and 0, the upper limit between 0 and 1.
G
Attempt To Change Password Protected Data:
The PWord command must be entered before any configuration data may be entered. If 5
consecutive minutes elapse between messages the password protection is reinstated. After a cold
start the password is always 0.
Y Hardware Failure Detected:
Indicates an internal hardware failure. Record the circumstances in which this message occurs as a
guide to appropriate repair.
Z
Illegal Internal Firmware State:
Indicates an internal software failure.