Siemens SINUMERIK Series Function Manual page 170

Diagnostics
7.4 TM54F
Figure 7-6
● Signal source for F-DO
A 6-way AND is connected upstream of every output terminal pair of an F-DO. The following
information is displayed for the signal sources of the AND logic gate inputs:
– Status signals of the drive of drive group 1 to 4
– If a signal source is not connected to an input, then the input is set to HIGH (default).
● Testing the F-DOs (test mode)
– A display using a checkbox indicates whether the test has been activated.
– Display of the selected test mode
● Status symbol for F-DO
The status symbol after the AND logic element indicates the logical state:
– red = discrepancy error at this F-DO
– yellow = discrepancy error at another F-DO
The status symbol of the digital inputs DI 20 to DI 23 indicates the status of the digital input:
– gray = inactive
– blue = active
170
Diagnostics: TM54F outputs
If a signal source is not connected at any input, then the output signal = 0.
Function Manual, 10/2015, 6FC5397-3EP40-5BA3
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