Omron CJ1W-MA - REV 10-2008, Operation Manual

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MECHATROLINK Communications Control Section 6-3
The UNIT ERROR RESET Bit cannot be used to clear errors that require PCU
replacement (MLK Device Initialization Error or MLK Device Error), or that
cause MECHATROLINK communications to stop (MLK Communications Error
or Transfer Cycle Setting Error). After removing the cause of the error, turn
ON the power to the PLC again or restart the PCU.
Common Operating Memory Area (Output)
n = CIO 1500 + (unit number
×
25)
Common Operating Memory Area (Input)
n = CIO 1500 + (unit number
×
25)
Individual Axis Errors
Errors Detected by PCU
during Communications Synchronous Communications Alarm (Axis Error Code: 3010 Hex)
This error occurs for errors in synchronous MECHATROLINK communications
processing with an axis.
If this error occurs, the corresponding axis will stop operating according to the
stop method that is set in the Servo Drive for when alarms occur.
This error may occur as a result of a faulty communications path with the cor-
responding axis, such as noise, breaks, or faulty connections in the communi-
cations line.
If this error occurs, the corresponding axis may not be able to accept opera-
tions through MECHATROLINK communications such as ERROR RESET. To
recover from this error, release the connection and remove the cause of the
error, and then execute CONNECT again. When using a Position Control Unit
with unit version 2.0 or later, the REJOIN command can be used to rejoin the
connection without breaking the connection.
Communications Alarm (Axis Error Code: 3011 Hex)
This error occurs for errors in MECHATROLINK communications processing
with an axis. The communications alarm will occur if the PCU fails twice in
succession to exchange data using MECHATROLINK communications, such
as not receiving communications data. The corresponding axis will stop oper-
ating if this alarm occurs according to the stop method that is set in the Servo
Drive for when alarms occur.
This error may occur as a result of a faulty communications path with the cor-
responding axis, such as noise, breaks, or faulty connections in the communi-
cations line.
Name Word Bits Contents
UNIT ERROR
RESET Bit n 00 0
→
1: Clears the Unit common error that
occurred.
Name Word Bits Contents
Unit Error Flag n+15 12 0: Unit common error has not occurred.
1: Unit common error has occurred.
Unit Busy Flag n+16 14 0: PCU is not busy.
1: PCU is busy.
Connection Status
Flag 15 0: MECHATROLINK communications
stopped.
1: MECHATROLINK communications exe-
cuting.
Unit error code n+21 00 to
15 Indicates the error code for the common
Unit error that occurred.