Siemens SIMATIC S7 F, Manual

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Fail-Safe Blocks
Fail-Safe Systems
A5E00085588-03
8-91
8.7.6 F_XOUTY
Function
The block monitors up to 16 binary inputs for signal state 1. The input signals are
monitored starting with the input IN1 up to and including the input INY for signal
state 1. The number of binary inputs to be monitored can be set with the Y
parameter. The output OUT is 1 if at least X inputs are 1. Otherwise, the output is
0. The output OUTN corresponds to the negating output OUT.
The binary inputs must be occupied continuously starting with IN1. When X>Y,
X<=0, X>16, Y<=0, the output OUT is 0. When Y>16, the output OUT behaves in
the same way as when Y=16.
I/Os
Name Data Type Explanation Default
Inputs: IN1 F_BOOL Input 1 0
IN2 F_BOOL Input 2 0
IN3 F_BOOL Input 3 0
... ...
IN16 F_BOOL Input 16 0
X F_INT Minimum number of inputs with
1: 0 < X <= 16 0
Y F_INT Number of inputs to be
monitored: 0 < Y <= 16 0
Output: OUT F_BOOL Output 0
OUTN F_BOOL Negating output 1
Error Handling
In the event of an error that is critical to safety, the system function SFC F_CTRL
is called. This records the event in the Diagnostic Buffer and requests a switch to
the reserve CPU if the error occurred only on the master CPU. For non-redundant
systems or a common-cause error occurring in both CPUs, the shutdown logic can
be configured to either disable the erred F-run-time group or the entire Safety
Program.
Error Information in Diagnostic Buffer
Error Code (W#16#...) Description
75DAH
Error in the safety data format of the inputs IN1 to IN6, X or Y
(Error due to online modification of the Safety Program or
internal CPU fault)