YASKAWA MECHATROLINK-II SI-T3 Technical Manual page 21

ALM_RD: 05H (Read Alarm and Warning)
Byte
1
2
3, 4
5
6 to 15
16
Byte ALM_RD_MOD = 0
5
6
7
8
9
10
11
12
13
14
15
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.
ALM_RD_MOD
0 Present fault (byte 6), past fault (byte 7)
1 Fault history trace 10 max. (byte 6 to 15)
2 Fault history (Alarms are not retained in the history.) (bytes 7 and 8)
YASKAWA ELECTRIC SIEP C730600 50A YASKAWA AC Drive-Option Card MECHATROLINK-II Technical Manual
Command
ALM_RD
0
ALM_RD_MOD
0
WDT
Table 13 ALM_RD_MOD
00H
U2-01
U2-02
Table 14 ALM_DATA
ALM_DATA
8 MECHATROLINK-II Commands
ALM_RD_MOD = 1
01H
U3-01
U3-02
U3-03
U3-04
U3-05
U3-06
U3-07
U3-08
U3-09
U3-10
Response
ALM_RD
ALARM
STATUS
ALM_RD_MOD
ALM_DATA
RWDT
ALM_RD_MOD = 2
02H
Alarm Index
Lower byte of U3-(Alarm Index + 1)
Upper byte of U3-(Alarm Index + 1)
Max.
Processing Parameter No.
Time
0.1 s U2-01 and U2-02
0.1 s U3-01 to U3-10
0.1 s U3-01 to U3-10
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