Mitsubishi Electric MELSEC-Q Series User Manual page 294

Operation specification when CPU is down
status (SB0073)
Reserved station specified status (SB0074)
Error invalid station specified status (SB0075)
Temporary error invalid station setting
information (SB0076)
Parameter receive status (SB0077)
Host station switch change detection (SB0078)
Master station return specification information
(SB0079)
Host master/standby master operation status
(SB007B)
Slave station refresh/compulsory clear setting
status in case of programmable controller CPU
STOP (SB007C)
Dedicated instruction where an error has
occurred
Station number where an error has occurred
● Before opening the "Error History" window, check the versions of the master/local module and programming tool.
( Page 399, Appendix 6 (2))
● If errors frequently occur in the master/local module, "*HST.LOSS*" may be displayed instead of an error code under
"Error Code".
In such case, increase the number of collected module errors per scan in the "PLC RAS" tab of the PLC parameter
window. For the setting, refer to the following.
User's manual for the CPU module used (function explanation, program fundamentals)
● If errors with the same error code consecutively occur, only the information on the first error is displayed in the "Error
History" window.
292
Item
Displays the operating status if a CPU module goes down set by the
parameter.
Displays the status of the reserved station setting configured by the
parameter.
Displays the status of the error invalid station setting configured by the
parameter.
Displays the status of the temporary error invalid station setting.
Displays whether parameters have been received from the master
station.
Displays detected setting changes in the setting switches on the host
station during data link.
Displays which of "Master Station" or "Master Station (Duplex Function)"
has been set in "Type" in the network parameter window.
Displays whether the host station is operating as a master station or a
standby master station.
Displays the status of the slave station refresh/compulsory clear setting
in case of programmable controller CPU STOP configured by the
parameter.
Displays a dedicated instruction where an error has occurred.
Displays a station number where transient transmission is to be
performed.
When the error is not a transient transmission error, "No Information" is
displayed.
Description