Mitsubishi Electric CR800 Series, Instruction Manual

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17 Troubleshooting
Occurrence of errors of Tracking and Vision Sensor 17-179
17.
Troubleshooting
This section explains causes of error occurrence and actions to be taken.
17.1.
Occurrence of errors of Tracking and Vision Sensor
Table 17-1 List of Tracking relation Errors
Error
number
Error description Causes and actions
L2500 Tracking encoder
data error
[Causes]
The data of the tracking encoder is abnormal.
(The amount of the change is 1.9 times or more.)
[Actions]
1) Check the conveyor rotates at the fixed velocity.
2)
Check the connection of the encoder.
3)
Check the earth of the earth wire.
L2510 Tracking parameter
reverses
[Causes]
Tracking parameter[EXCRGMN] and [EXCRGMX] Setting value
reverses
[Actions]
1) Check the value of [ENCRGMX] and [ENCRGMN] parameters.
L2520 Tracking parameter is
range over
[Causes]
The set value is outside the range parameter [TRBUF]. The first
argume nt is 1 to 8, and the second argument is 1 to 64.
[Actions]
1) Check the value of [TRBUF] parameter.
L2530 There is no area
where data is written
[Causes]
The data of the size or more of the buffer in which the TrWrt command
was continuously set to the second argument of parameter [TRBUF]
was written.
[Actions]
1) Check the execution count of the TrWrt command is correct.
2) Check the value of the second argument of parameter [TRBUF] is
correct.
3) Check that the X and Y coordinates of the position variable ”PCHK”
in “CM1” program are not ”0.” If they are ”0,” change the difference
from the theoretical value to an allowable value.
L2540 There is no read data [Causes]
The TrRd command was executed in state the data is not written in
tracking buffer.
[Actions]
1) Execute the TrRd command after confirming whether the buffer has
the data with the state variable [M_Trbfct].
2) Confirm whether the buffer number specified by the buffer number
specified in TrWrt command and the TrRd command is in
agreement.