22
Initial Operation
7.8.3 Diagnostic alarms
The appropriate alarm module should be set up in the controller in the case of an alarm message originating
from the switch by short circuit at the ports (hardware interrupt OBs OB40-OB47). If this is not the case, the
CPU goes into the STOP mode in the case of an interrupt triggering event. The following alarm messages are
output from the switch to the controller:
Diagnostic I/O: Short-circuit after V
CC
(coming)
Api
0x00000000
Slot
0x0001
Subslot
0x0001
Channel
1: (Port 2, Pin2)
2: (Port2, Pin4)
3: (Port4, Pin2)
4: (Port4, Pin4)
AlarmSpecifier
0x01, Diagnosis appears
ChannelErrorType
0x0100, (manufacturer-specific)
Diagnostic I/O: Short-circuit after V
CC
(going)
Api
0x00000000
Slot
0x0001
Subslot
0x0001
Channel
1: (Port 2, Pin2)
2: (Port2, Pin4)
3: (Port4, Pin2)
4: (Port4, Pin4)
AlarmSpecifier
0x02, Diagnosis disappears
ChannelErrorType
0x0100, (manufacturer-specific)
Diagnostic I/O: Short-circuit after Gnd (coming)
Api
0x00000000
Slot
0x0001
Subslot
0x0001
Channel
1: (Port 2, Pin2)
2: (Port2, Pin4)
3: (Port4, Pin2)
4: (Port4, Pin4)
AlarmSpecifier
0x01, Diagnosis appears
ChannelErrorType
0x0101, (manufacturer-specific)