Panasonic FP2 ET-LAN, Technical Manual

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12-4
12.1.2 Contents of Error Log Area
Error log area (bank 0)
Address Name Explanation
380H Log mode
[Set value] (Default value: 0004H)
The recorded error differs depending on the set value.
Set value 0 1 2 3 4
System error
Recovery
possible error
-
Warning error - -
Access error - - -
E-mail error - - - -
381H
Log block
reading pointer
[Set value] Offset from latest log block of log buffer [Default value: 0000H]
- To read the latest log block, “0” is specified. To read the oldest log block used,
“Number of log blocks used – 1” is specified (see 387H below). This value
should be set such that the number of log blocks used is greater than or equal
to the log block reading p the number of log block being read. If
anything else is specified, the results will be unclear.
382H
Number of
reading log block
[Set value] No. of reading blocks [Default value: 0000H]
- This specifies the number of blocks up to the old block to be read from the log
block reading point.
- A value of 14 or less should be set. If a value of 15 or higher is set, or if 0 is
set, 14 blocks will be read.
383H
384H
Reserved (Used by the system.)
385H Log buffer size
[Stored value] Log buffer size available with the unit itself (number of log blocks)
[Set value: 0100H (256 blocks)]
- This is set by the unit itself when it boots.
386H
Total number of
log
[Stored value] Cumulative total of log blocks recorded after initialization
processing
- This is cleared to 0 when initialization processing is carried out.
- The number of logs is counted up to FFFFH (65535), but if an attempt is made
to record more logs than will fit into the available buffer space, logs are
overwritten, starting with the oldest.
- The number of logs will not be incremented past FFFFH (65535).
387H
Number of log
blocks used
[Stored value] Current number of log blocks available for reading in log buffer
- This is cleared to 0 when initialization processing is carried out.
- The count of the number of logs used will not be incremented past the buffer
size.
388H to
38FH Latest log block
area (8 words)
[Stored value] Latest log information
- The unit itself updates the contents constantly, so information can be read
using the shared memory access instructions F150 (READ) and P150
(PREAD), without issuing a read request.
- This is cleared to 0 when initialization processing is carried out.
390H to
3FFH
Log block
reading
processing area
(8 words x 14
blocks)
[Stored value] Data read during log block read processing
- Up to 14 blocks are stored in the log, in the order in which the errors occurred,
when a read request is issued (the error log notified request bit of the
handshake area in the I/O or shared memory goes on).
- This is cleared to 0 when initialization processing is carried out.
Note:
1) Addresses 380H to 382H should be set before the error log notified request is issued.
2) The ET-LAN unit writes the latest values to addresses 385H to 38FH.
3) The ET-LAN unit writes values to addresses 390H to 3FFH after the error log notified request has
been issued.