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4 Safety Function Blocks
NX-series Safety Control Unit Instructions Reference Manual (Z931)
4
SF
_T
est
ableSafetySensor
SF_TestableSafetySensor
This safety FB tests functionality with the external test function of electro-sensitive protective equipment
(ESPE). For example, it detects the loss of sensing unit detection ability, response times that exceed
specified values, and always-ON signals from a single-channel sensor system. It can be used with a
safety sensor that supports external testing (ESPE: electro-sensitive protective equipment, such as a
light beam).
Instruction
Name
FB/FUN
Graphic expression
SF_TestableSafety
Sensor
Testable Safety
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
S_OSSD_In
SAFEBOOL TRUE or FALSE
FALSE
A variable. It is the status of the sensor output. Example:
Light curtain
FALSE: The safety sensor is in test status or there is a
request for a safety-related response.
TRUE: The sensor is in normal operating condition.
StartTest
BOOL
TRUE or FALSE
FALSE
A variable. It is the sensor test start input.
S_TestOut
is set
and the internal time monitor in the FB is started.
FALSE: There is no test request.
TRUE: There is a test request.
TestTime
TIME
0 to 150 ms
T#10ms
A constant. It inputs the test monitoring time for the safety
sensor.
NoExternalTest
BOOL
TRUE or FALSE
FALSE
A constant. It indicates if a manual external test is sup-
ported for the sensor.
FALSE: A manual external test is supported. If an error
occurs in the automatic sensor test, an external manual
sensor test is required. An automatic test will be possible
again only after a manual sensor test sequence is com-
pleted.
TRUE: A manual external test is not supported. If an error
occurs in the automatic sensor test, an automatic test is
possible again without a manual sensor test.
S_StartReset
SAFEBOOL TRUE or FALSE
FALSE
Safety FB Common Input Variables
S_AutoReset
SAFEBOOL TRUE or FALSE
FALSE
Refer to
Safety FB Common Input Variables
Reset
BOOL
TRUE or FALSE
FALSE
Refer to
Safety FB Common Input Variables
SF_TestableSafetySensor
Activate
S_OSSD_In
StartTest
BOOL
SAFEBOOL
SAFEBOOL
BOOL
Ready
S_OSSD_Out
S_TestOut
TestPossible
BOOL
TestExecuted
BOOL
Error
WORD
DiagCode
BOOL
SAFEBOOL
BOOL
TIME
TestTime
BOOL
NoExternalTest
S_StartReset
S_AutoReset
SAFEBOOL
SAFEBOOL
BOOL
Reset
Summary of Contents for NX-SL series
Page 8: ...CONTENTS 6 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 28: ...Sections in this Manual 26 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 98: ...2 Standard Functions 2 64 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 104: ...2 Standard Functions 2 70 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 110: ...2 Standard Functions 2 76 NX series Safety Control Unit Instructions Reference Manual Z931 ...
Page 265: ...I 1 I NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
Page 268: ...I 4 NX series Safety Control Unit Instructions Reference Manual Z931 Index ...
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