Appendix D
Memory Areas
459
Word(s)
Function
Bit(s)
23
00 to 15
Power Off Counter (BCD)
24
00 to 04
Reserved by system.
05
Cycle Time Flag
06
SYSMAC LINK System Network Parameter Flag for operating level 1
07
SYSMAC LINK System Network Parameter Flag for operating level 0
08
SYSMAC/SYSMAC NET Link Unit Level 1 Mounted Flag
09
SYSMAC/SYSMAC NET Link Unit Level 0 Mounted Flag
10
Reserved by system.
11 and 12
PC Link Level
13
Rack-mounting Host Link Unit Level 1 Mounted Flag
14
Rack-mounting Host Link Unit Level 0 Mounted Flag
15
CPU-mounting Device Mounted Flag
25
00 to 11
Reserved by system.
12
Trace End Flag
13
Tracing Flag
14
Trace Trigger Bit (writeable)
15
Trace Start Bit (writeable)
26
00 to 15
Maximum Cycle Time (0.1 ms)
27
00 to 15
Present Cycle Time (0.1 ms)
DM Area (Error Log)
Word
Function
DM 6000
Error Pointer (Incremented by 1 for each error (0000 to 000A)
DM 6001 to
DM 6030
Error Records (3 words per error for 10 errors, 30 words total)
See following table for structure of individual records.
Word
Bit
Content
First
00 to 07
Error code (see error information provided elsewhere)
08 to 15
00 (non-fatal) or 80 (fatal)
Second
00 to 07
Seconds
Clock data read from AR
18
d AR 19
08 to 15
Minutes
18 and AR 19.
Third
00 to 07
Hours
08 to 15
Day of month