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15. COMMUNICATION FUNCTION
15.5.9 Alarm history
(1) Alarm No. read
Read the alarm No. which occurred in the past. The alarm numbers and occurrence times of No. 0 (last
alarm) to No. 5 (sixth alarm in the past) are read.
(a) Transmission
Send command [3][3] and data No. [1][0] to [1][5]. Refer to section 15.4.1.
(b) Reply
The alarm No. corresponding to the data No. is provided.
00
Alarm No. is transferred in hexadecimal.
For example, "0032" means A32 and "00FF" means A_ _ (no alarm).
(2) Alarm occurrence time read
Read the occurrence time of alarm which occurred in the past.
The alarm occurrence time corresponding to the data No. is provided in terms of the total time beginning
with operation start, with the minute unit omitted.
(a) Transmission
Send command [3][3] and data No. [2][0] to [2][5].
Refer to section 15.4.1.
(b) Reply
The alarm occurrence time is transferred in hexadecimal.
Hexadecimal must be converted into decimal.
For example, data "01F5" means that the alarm occurred in 501 hours after start of operation.
(3) Alarm history clear
Erase the alarm history.
Send command [8][2] and data No. [2][0].
Command Data No. Data
[8][2] [2][0] 1EA5