Function description
Operating Manual PSS67 IO1 16FDI
1004417-EN-03
15
}
Test pulses are switched on in the default setting.
}
When test pulses are switched off, the device supply (24 V) is constantly available at
the test pulse outputs.
Detection of shorts across contacts
}
The test pulses are used to detect shorts between inputs. Shorts between inputs are
detected when the test pulses are different (test pulse 0, test pulse 1)
}
Shorts between inputs of the same module with the same test pulses will not be detec-
ted.
4.3.1
Integrated protection mechanisms
}
Test pulse signals are always buffered for 20 ms.
The module provides the following diagnostic data:
}
Start-up error
}
Configuration error
}
FS communication error
}
Bus termination error
}
Temperature error: Too warm
}
Test pulse error
}
Input error
4.3.2
PSSu assignment in system environment B
Data access is via pre-defined I/O data types:
I/O data name
Input
(
Slot:Pin
)
I/O data type
I/O data element
Meaning
I0(X01:4)
I1(X01:2)
I2(X02:4)
I3(X02:2)
FS_I_DI
Data: SAFEBOOL
Input data I0 ... I3 for the module
on slot 0 with plug-in connectors
X01 and X02
I0(X03:4)
I1(X03:2)
I2(X04:4)
I3(X04:2)
FS_I_DI
Data: SAFEBOOL
Input data I0 ... I3 for the module
on slot 1 with plug-in connectors
X03 and X04
I0(X05:4)
I1(X05:2)
I2(X06:4)
I3(X06:2)
FS_I_DI
Data: SAFEBOOL
Input data I0 ... I3 for the module
on slot 2 with plug-in connectors
X05 and X06