FD67 Profibus-DP Manual
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7.2.3.2 Relationship between signal-logical representation and LED response
Each input and output is allocated a separate status display which is labelled '00...07' or '10...17'. It is
located next to the corresponding M12 socket ; this simplifies status assignment of peripheral
components such as sensors and actuators.
Voltage at input
Logical value
LED display
12
0 V
0
Off
Input with make
funtion
24 V
1
Yellow
0 V
1
Off
Input with break
funtion
24 V
0
Yellow
0 V
1
Red
Diagnosis input
24 V
0
Off
♦
Table 7-11 : Relationship between signal-logical representation and LED response - Input
Logical value
Voltage at output
LED display
0
0 V
Off
Output
1
24 V
Yellow
♦
Table 7-12 : Relationship between signal-logical representation and LED response - Output
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If a channel-related diagnosis is available, the LED assigned to this channel is continuously lit red.