Safety Integrated - Industry - Siemens

Note
If the above section is not observed the F CPU may go to
STOP mode.
FC "STANDARD" (FC 3)
The FC "STANDARD" (FC 3) in the following figure sets/resets
#COND whose information starts or stops the "machine" in the
failsafe program.
#START
#STOP
"P"
P &
#E_MAGNET
"N"
N
"INSTANZ_
FB1".
RELEASE
>=1
"SR"
SR
S
R Q
"COND"
=
"INSTANZ_FB1".RELEASE is a bit from the instance data block
(DB 1) of the FB 1, which is processed in the safety program.
The static variable "RELEASE" is set or reset. Here in FC 3 the
standard user program will read this information, as the machine
must only be operated with "RELEASE"="1".
The failsafe program has the following program sequence:
F-CALL
(FC1) FB"COORDINATION"
(FB1,DB1)
FB"F_SFDOOR"
(FB217,DB217)
FC"REINTEGRATION"
(FC2)
G_FB_XX_088
G_FB_XX_090
F-CALL (FC1)
F-CALL (FC1) is the F runtime group and is called from the cyclic
interrupt OB (OB35). F-CALL calls the F-programe block
(here the FB 1)
FB "F_SFDOOR" (FB217, DB217)
FB "COORDINATION" (FB1, DB1) is the first to call the FB
"F_SFDOOR" (FB217, DB217). FB 217 is a certified block from
the library of distributed safety, which from version 5.3 on is
available for safety door monitoring.
...
"SEP_ACT"
"HINGED_
SW"
"F00002
4_8_F_DI_
DC24V".
QBAD
"F00002
4_8_F_DI_
DC24V".
QBAD
#OPEN_NEC
#ACK_NEC
EN
IN1
IN2
QBAD_IN1
QBAD_IN2
OPEN_NEC
ACK_NEC
"INSTANZ_
FB217
"F_SFDOOR"
DIAG
Q #RELEASE
ACK_REQ #ACK_REQ
From the
Distributed
#ACK ACK
ENO
Safety library G_FB_XX_089
...
The enable signal Q (#RELEASE) decides whether
■ the actuator is switched on/off
■ whether the safety door must be opened
The inputs of the safety position switch "SEP_ACT" and the
hinge switch are allocated to the inputs IN1 and IN2 of the FB
217. As soon as one of the two inputs IN1 and IN2 has the signal
status "0", it is interpreted as opening the safety door. The
enable signal is thereby reset to '0'.
Functional Example No. AS-FE-I-002-V10-EN 189
Ex. No.
2