F_Xouty - Siemens SIMATIC S7 F Manual

Fail-Safe Blocks
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
Inputs:
Output:
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#...)
75DAH
Fail-Safe Systems
A5E00085588-03
Name Data Type
IN1 F_BOOL
IN2 F_BOOL
IN3 F_BOOL
...
IN16 F_BOOL
X F_INT
Y F_INT
OUT F_BOOL
OUTN F_BOOL
Description
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)
Explanation
Input 1
Input 2
Input 3
...
Input 16
Minimum number of inputs with
1: 0 < X <= 16
Number of inputs to be
monitored: 0 < Y <= 16
Output
Negating output
Default
0
0
0
0
0
0
0
1
8-91