4 Safety Function Blocks
4 - 82
NX-series Safety Control Unit Instructions Reference Manual (Z931)
SF_MutingPar_2Sensor
Muting is used to intentionally disable a safety function. This safety FB performs parallel muting with
two muting sensors.
Instruction Name FB/FUN Graphic expression
SF_MutingPar_2S
ensor
Parallel Muting
with 2 Sensors
FB
Variables
Input Variables
Variable Data type Valid range Default Description
Activate BOOL TRUE or FALSE FALSE Refer to Safety FB Common Input Variables on page 4-2.
S_AOPD_In SAFEBOOL TRUE or FALSE FALSE A variable. This is the OSSD (safety output) signal from
the AOPD (active optoelectronic protective device).
FALSE: Something entered the protected area.
TRUE: Nothing entered the protected area.
S_MutingSwitch
11
SAFEBOOL TRUE or FALSE FALSE A variable. It is the status of muting sensor 11.
FALSE: Muting sensor 11 is not operating.
TRUE: A workpiece activated muting sensor 11.
S_MutingSwitch
12
SAFEBOOL TRUE or FALSE FALSE A variable. It is the status of muting sensor 12.
FALSE: Muting sensor 12 is not operating.
TRUE: A workpiece activated muting sensor 12.
S_MutingLamp SAFEBOOL TRUE or FALSE FALSE A constant or a variable. It is the muting lamp status input
(e.g., filament broken status).
FALSE: Muting lamp failure.
TRUE: Muting lamp is normal.
DiscTimeEntry TIME T#0s to T#4s T#0s A constant. It inputs the maximum discrepancy time
between MutingSwitch11 and MutingSwitch12.
MaxMutingTime TIME T#0s to T#10min T#0s A constant. It inputs the maximum time until completion of
the muting sequence. The timer starts when the muting
sensor first operates.
SF_MutingPar_2Sensor
Activate
S_AOPD_In
S_MutingSwitch11
BOOL
SAFEBOOL
SAFEBOOL
BOOL
Ready
S_AOPD_Out
S_MutingActive
Error
WORDDiagCode
BOOL
SAFEBOOL
SAFEBOOL
SAFEBOOL S_MutingSwitch12
SAFEBOOL S_MutingLamp
DiscTimeEntry
MutingEnable
TIME
BOOL
SAFEBOOL S_StratReset
TIME
MaxMutingTime
BOOL Reset
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