Signal processing
7.4 Activation of digital outputs
SITRANS DA400 for material flow monitoring with protection against explosion
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Operating Instructions, 09/2007, A5E00841152-01
7.4
Activation of digital outputs
Actuation of digital outputs
The following internal digital signals are output at the 6 digital outputs "DO 1" to "DO 6":
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Pre-alarms "PrAL1" to "PrAL4"
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Main alarms "AL1" to "AL4"
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Limit exceeded/digital signal "doI1" to "doI4" from universal inputs
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Group fault signal for "doFAI" inputs
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Internal fault report (storage device/microcontroller) "doFAU"
The signal flow corresponds to positive logic. This means that a positive signal at the digital
output results in low-impedance closing.
You can use the parameters P.15 to P.24 and P.34 to P.37 to select the digital output to be
used to output the associated signal. You can also select whether the signal is to be output
inverted.
