7.14
Errors and Warnings
This section describes errors and warnings of the positioning function.
(1) Error
When an error occurs, the following operations are performed.
• The I/O ERR. LED turns on.
• The Axis 1 error (SM1845) turns on.
• An error code corresponding to the error is stored to the Axis 1 error code (SD1845) in decimal.
• The Axis 1 axis operation status (SD1844) changes to error occurring (-1).
If an error occurs during operation, the axis decelerates to a stop. (This excludes situations that the range of
software stroke limits is exceeded when the target position is changed. ( Page 126, Section 7.10.6 (2) (b)))
Interface
Target axis
Axis 1
Axis 2
Special relay
Axis 1
Axis 2
Axis 1
Axis 2
Special register
Axis 1
Axis 2
*1
Until the Axis 1 busy (SM1840) turns off, the Axis error (SM1845) does not turn off even when the Axis 1 error reset
(SM1850) is turned on, and accordingly the Axis 1 error code (SD1845) is not reset. Also, the Axis 1 axis operation
status (SD1844) does not change to standing by (0).
No.
Name
SM1845
Axis error
SM1865
SM1850
Axis error reset
SM1870
SD1845
Axis error code
SD1865
SD1844
Axis axis
operation status
SD1864
CHAPTER 7 POSITIONING FUNCTION
Description
The occurrence condition of positioning function
errors is indicated. This relay turns off when the Axis
error reset is turned on.
• Reset the Axis error code.
• Turn off the Axis error.
When an error occurs, the corresponding error code
is stored here. This register is reset when the Axis
error reset is turned on.
When an error occurs, error occurring (-1) is set.
When the Axis error reset is turned on, the value
changes to standing by (0).
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