14. COMMUNICATION FUNCTIONS

14.12.9 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 14.11.1.

(b)Reply

The alarm No. corresponding to the data No. is provided.

0 0

Alarm No. is transferred in decimal.

For example, “0032” means AL.32 and “00FF” means AL._ (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 14.11.1.

(b)Reply

The alarm occurrence time is transferred in decimal.

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

14 - 25

Page 248
Image 248
Mitsubishi Electronics MR-J2S- A Alarm history Alarm No. read, For example, 0032 means AL.32 and 00FF means AL. no alarm