Overview Of Pcu Errors - Omron CJ1W-NC271 - 12-2009 Operation Manual

Overview of PCU Errors

12-1 Overview of PCU Errors
Category Source of Error/
error warning
Unit com- PCU Error
mon
Axis errors PCU Error
MECHA- Error
TROLINK
slave
device
Warning
Note
Common Operating
Memory Area
Word n+15
Word n+21
Axis Operating Input
Memory Areas
Word b
Word b+4
n = CIO 1500 + (unit number × 25)
b = Beginning word of Axis Operating Input Areas specified in Common Parameters + (Axis No. − 1) × 25
480
The PCU detects errors that occur in the PCU, MECHATROLINK communica-
tions, or the MECHATROLINK slave device and sends notification of the error
to the CPU Unit.
The errors that are detected by the PCU can be divided broadly into problems
common to the PCU and those in each of the controlled axes. The CPU Unit
is notified of any errors according to the cause of the detected error and its
location, as shown in the following table.
Errors at CPU Unit PCU
powerup errors internal
(initializa- errors
tion
errors)
Causes Causes Causes
Unit com- Unit com- Unit com-
mon error mon error mon error
Does not Does not Does not
cause axis cause axis cause axis
error error error
Does not Does not Does not
cause axis cause axis cause axis
error error error
Does not Does not Does not
cause axis cause axis cause axis
error error error
(1) MECHATROLINK communications errors are either related to all commu-
nications or occur in individual axes, and are notified either as Unit com-
mon errors or as axis errors.
(2) The PCU settings/operation errors are caused due to operations either
common to the PCU or in each axis, and are notified either as Unit com-
mon errors or as axis errors.
The following diagram shows the operation error notification.
CPU Unit
12
Unit Error Flag
Unit error code
12 11
Warning Flag
Error Flag
Axis error code
If an error occurs, the PCU operates according to the following table depend-
ing on the cause of the detected error.
Cause of error
MECHA- PCU set-
TROLINK tings/
communi- opera-
cations tion
errors errors
Causes Causes
Unit com- Unit com-
mon error mon error
Causes Causes
axis error axis error
Causes Causes
axis error axis error
Does not Does not
cause axis cause axis
error error
PCU
MECHATROLINK
Errors common to PCU
Errors/warnings occurring in each axis
Section 12-1
Notifica- Interface
tion from area
MECHA-
PCU
TROLINK
slave
device
errors
Does not Unit Error Common
cause Unit Flag, Unit Operating
common error code Memory
error Area
Does not (Axis) Axis Oper-
cause axis Error Flag, ating Input
error Axis error Memory
code Areas
Causes
axis error
Causes (Axis)
axis error Warning
Flag, Axis
error code
Servo Drive