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7. AUXILIARY FUNCTION
7.17.2 Alarm history data details
There are three types of history data, system startup command data and completion of system startup data,
and alarm history data. One history data is 64 bytes. The details of the data are shown in the following.
(1) System startup command data
Offset Content Offset Content
0000h
System startup time
0020h
Reserved
0001h 0021h
0002h 0022h
0003h 0023h
0004h 0024h
0005h 0025h
0006h 0026h
0007h 0027h
0008h
Free run counter
0028h
0009h 0029h
000Ah 002Ah
000Bh 002Bh
000Ch Control cycle 002Ch
000Dh Event code 002Dh
000Eh
Reserved
002Eh
000Fh 002Fh
0010h Communication mode 0030h
0011h Control mode 0031h
0012h
Reserved
0032h
0013h 0033h
0014h 0034h
0015h 0035h
0016h 0036h
0017h 0037h
0018h 0038h
0019h 0039h
001Ah 003Ah
001Bh 003Bh
001Ch 003Ch
001Dh 003Dh
001Eh 003Eh
001Fh 003Fh Checksum
(a) System startup time
When the API library is used, the number of seconds passed since 0000hrs, January 1, 1970 at the
input time for system startup command is stored.
When the API library is not used, "0" is stored.
(b) Free-run counter
Stores the value of the free-run counter at the system startup command.