Yaskawa 1000 Series Drive Option - MECHATROLINK-II Technical Manual - Manual (Page 21)

8 MECHATROLINK-II Commands
YASKAWA ELECTRIC SIEP C730600 50A YASKAWA AC Drive-Option Card MECHATROLINK-II Technical Manual 21
„ ALM_RD: 05H (Read Alarm and Warning)
Table 13 ALM_RD_MOD
The ALM_RD command is used to read the following information about the status of faults and alarms.
• Present fault and alarm status list
• Fault history (Alarms are not saved in the history.)
• Details of faults
In the following case, a warning is generated and the command is ignored.
• If ALM_RD_MOD is other than a set value: Data setting warning (A.94)
The fault history is saved in EEPROM and is kept even when the control power is interrupted.
• If ALM_RD_MOD is set to 0: Fault code (1 byte) is entered to byte 6 of ALM_DATA, and byte 7 becomes the value
of the previous fault.
• If ALM_RD_MOD is set to 1: Fault code is entered in order of detection from ALM_DATA byte 6 so that byte 6 is
the most recent fault.
• When ALM_RD_MOD is set to 2: Fault code detected by the value set by the Alarm Index +1 is entered to bytes 7
and 8.
During normal operation (i.e., when no fault has occurred), the value is 00H.
Table 14 ALM_DATA
Byte Command Response
1 ALM_RD ALM_RD
2
0
ALARM
3, 4 STATUS
5 ALM_RD_MOD ALM_RD_MOD
6 to 15 0 ALM_DATA
16 WDT RWDT
Byte ALM_RD_MOD = 0 ALM_RD_MOD = 1 ALM_RD_MOD = 2
5 00H 01H 02H
6 U2-01 U3-01 Alarm Index
7 U2-02 U3-02 Lower byte of U3-(Alarm Index + 1)
8 U3-03 Upper byte of U3-(Alarm Index + 1)
9 U3-04
10 U3-05
11 U3-06
12 U3-07
13 U3-08
14 U3-09
15 U3-10
ALM_RD_MOD ALM_DATA
Max.
Processing
Time
Parameter No.
0 Present fault (byte 6), past fault (byte 7) 0.1 s U2-01 and U2-02
1 Fault history trace 10 max. (byte 6 to 15) 0.1 s U3-01 to U3-10
2 Fault history (Alarms are not retained in the history.) (bytes 7 and 8) 0.1 s U3-01 to U3-10