STATUS Error Messages

Error Handling

The PLC will not enter the HALT state due to storage failure, but a warning is given in 2 stages:

Error message is provided at EFB output STATUS.
Error message is send to diagnostic buffer.

Memory Access Messages

PCMCIA card memory access messages

Code	Description
16#0000	action performed correctly
16#0102	`ADR_W + SPACE_KW - 1` is greater than the maximum number of declared words in the PLC
16#0104	no valid application or no word in the PLC
16#0201	no file zone in the memory card
16#0202	memory card error
16#0204	memory card write-protected
16#0241	`ADR_W` < 0
16#0242	`ADR_W + SPACE_KW -1` is greater than the highest address of the memory card
16#0401	`SPACE_KW` = 0
16#0402	`Slot_Number` is different from 0 and 1
16#0501	unsupported service

SFC Specific Messages

New SFC specific messages/warnings have been defined additionally to the PCMCIA card memory access messages.

Code	Description
16#a4F4	end of `SAVE` model
16#a5F4	`RESTORE` initiated
16#a6F4	`RESUME` initiated
16#a7F4	nothing saved. Nothing restored, because nothing has been saved
16#a8F4	communication lost with `SFC_RESTORE` EFB
16#a9F4	Too much SFC sections for `SFC_Restore`. `SPACE_KW` parameter of `SFC_RESTORE` EFB exceeds system limitation NOTE: This warning indicates that the maximal card space, which is visualized at the `NUMPOSBL` output, can be fine tuned by reducing the `SPACE_KW` parameter.
16#aaF4	saved data not valid
16#abF4	not all charts could be restored / resumed / initialized
16#acF4	memory space too small
16#adF4	application has changed
16#aeF4	an `INIT` was done due to restore error

NOTE: If more than 1 status has to be reported, only the most significant is shown at the STATUS output of the EFB. Significance increases with higher numbers (in hexadecimal or unsigned notification). INIT warning (16#aeF4) is most significant.

NOTE: If error 16#a0F4 (SFC command undefined) is shown at the EFB STATUS, the OS in the PLC does not support SFC_Restore feature (e.g. wrong version of OS).

Reports to Diagnostic Buffer

The following events are reported to diagnostic buffer, but not to EFB.

Code	Description
16#a4F4	End of `SAVE` mode
16#a5F4	`RESTORE` initiated
16#a6F4	`RESUME` initiated
16#a9F4	Too much SFC sections for `SFC_Restore`. `SPACE_KW` parameter of `SFC_RESTORE` EFB exceeds system limitation NOTE: This warning indicates that the maximal card space, which is visualized at the `NUMPOSBL` output, can be fine tuned by reducing the `SPACE_KW` parameter.