Omron OMNUC W Series Manual page 136

Alarm Read Command (Command Code: 1100, C Hex)
The Alarm Read Command reads the last four alarms that have occurred on the W-series
Servo Driver and the DeviceNet Unit. Refer to 10.3 Alarm/Warning Codes and Error Codes
for Message Communications to check alarms.
To use the Alarm Read Command, make the command code settings and then change the
Command Start Command from 0 to 1.
Table 6.19 Commands for Alarm Read Command
Byte Bit 7 Bit 6
1 0
0
1
2
3
4
5
6
7
Table 6.20 Responses for Alarm Read Command
Byte Bit 7 Bit 6
1 READY
0
0
1
2
3
4
5
6
7
Bit 5 Bit 4 Bit 3
ALRST STOP 0
0
0
0
Bit 5 Bit 4 Bit 3
PWRON STOP_R ALRM
0
Last alarm code
Second last alarm code
Third last alarm code
Fourth last alarm code
6-39
6.5 Remote I/O Communications
Bit 2 Bit 1 Bit 0
0 SVON C_STRT
C Hex
Bit 2 Bit 1 Bit 0
WARN SVON_R C_STRT_R
C Hex
6