Siemens SIMATIC S7 Functional Safety Manual page 53

Parameter assignment of the "SFDOOR" instruction
Inputs/outputs
"Safety_Door_SW1" (I8.2)
"Safety_Door_SW2" (I8.3)
"Quality_In1" (I10.2)
"Quality_In2" (I10.3)
TRUE
TRUE
"Acknowledge" (I0.0)
#EN_Safety_Door
—
—
The two inputs QBAD_ IN1 and QBAD_ IN2 must be interconnected. In this example, both safety door position switches
1
are connected through the SFDOOR and ESTOP1 program logic with the QBAD signal of the F-I/O DB of the
SM 1226 F-DQ 4 x 24 VDC in the FDBACK program logic.
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
Parameter Data type
IN1 Bool
IN2 Bool
QBAD_ IN1 Bool
QBAD_ IN2 Bool
OPEN_NEC Bool
ACK_NEC Bool
ACK Bool
Q Bool
ACK_REQ Bool
DIAG Byte
Description
Input 1
Input 2
Quality bit signal for input IN1
Quality bit signal for input IN2
TRUE = Opening required on startup
TRUE = Acknowledgment required
User acknowledgement (Pushbutton)
Output (Enable safety door)
Acknowledgement prompt
Service information
Getting started
2.3 Programming
Default
FALSE
FALSE
TRUE
1
TRUE
1
TRUE
TRUE
FALSE
FALSE
FALSE
B#16#0
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