Actuation Of Digital Outputs - Siemens SITRANS DA400 Operating Instructions Manual

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Evaluating and processing signals

7.2 Evaluation of universal inputs

7.2.5

Actuation of digital outputs

The following internal digital signals are output at the 6 digital outputs "DO 1" to "DO 6":

• Pre-alarms "PrAL1" to "PrAL4"

• Main alarms "AL1" to "AL4"

• Limit exceeded/digital signal "doI1" to "doI4" from universal inputs

• Group fault signal for "doFAI" inputs

• 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.

7-6

SITRANS DA400 with protection against explosion

Operating Instructions, 02/2006, A5E00684661-01

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