Siemens SIMATIC S7-1200 - 4.3 Execution of the user program

Getting started
2.3 Programming
S7-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344-AA
53
Parameter assignment of the "SFDOOR" instruction
Inputs/outputs
Parameter
Data type
Description
Default
"Safety_Door_SW1" (I8.2)
IN1
Bool
Input 1
FALSE
"Safety_Door_SW2" (I8.3) IN2 Bool Input 2 FALSE
"Quality_In1" (I10.2)
QBAD_ IN1
Bool
Quality bit signal for input IN1
1
TRUE
"Quality_In2" (I10.3)
QBAD_ IN2
Bool
Quality bit signal for input IN2
1
TRUE
TRUE
OPEN_NEC
Bool
TRUE = Opening required on startup
TRUE
TRUE
ACK_NEC
Bool
TRUE = Acknowledgment required
TRUE
"Acknowledge" (I0.0)
ACK
Bool
User acknowledgement (Pushbutton)
FALSE
#EN_Safety_Door
Q
Bool
Output (Enable safety door)
FALSE
—
ACK_REQ
Bool
Acknowledgement prompt
FALSE
—
DIAG
Byte
Service information
B#16#0
1
The two inputs QBAD_ IN1 and QBAD_ IN2 must be interconnected. In this example, both safety door position switches
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.