4 Safety Function Blocks
4 - 70
NX-series Safety Control Unit Instructions Reference Manual (Z931)
SF_MutingPar
Muting is used to intentionally disable a safety function. This safety FB performs parallel muting with
four muting sensors.
Instruction Name FB/FUN Graphic expression
SF_MutingPar Parallel Muting 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 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.
MutingSwitch11
BOOL
*1
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.
MutingSwitch12
BOOL
*1
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.
MutingSwitch21
BOOL
*1
TRUE or FALSE FALSE A variable. It is the status of muting sensor 21.
FALSE: Muting sensor 21 is not operating.
TRUE: A workpiece activated muting sensor 21.
MutingSwitch22
BOOL
*1
TRUE or FALSE FALSE A variable. It is the status of muting sensor 22.
FALSE: Muting sensor 22 is not operating.
TRUE: A workpiece activated muting sensor 22.
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.
SF_MutingPar
Activate
S_AOPD_In
MutingSwitch11
BOOL
SAFEBOOL
SAFEBOOL
BOOL
Ready
S_AOPD_Out
S_MutingActive
Error
WORDDiagCode
BOOL
SAFEBOOL
BOOL
BOOL MutingSwitch12
BOOL MutingSwitch21
BOOL MutingSwitch22
SAFEBOOL S_MutingLamp
DiscTime11_12
DiscTime21_22
TIME
TIME
TIME MaxMutingTime
BOOL MutingEnable
SAFEBOOL S_StratReset
BOOL Reset
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