4 function description, 1 module features, 1 function description – Pilz PSSu E S 4DI-D User Manual
Page 12: Section 4, Function description, Module features
Function description
Operating Manual PSSu E S 4DI-D
1001322-EN-04
12
Function description
Module features
Function description
Module supply
}
The module supply provides the module with voltage.
Periphery supply
}
The module routes the periphery supply from the module bus to the base module termi-
nals.
}
The periphery supply is available at the supply outputs S1 and S2.
Inputs
}
The input status is signalled to the head module via the module bus.
}
The inputs have input filters.
Supply outputs S1 and S2
}
The supply outputs supply the sensors at the inputs.
}
The supply outputs are protected against overload and reverse polarity.
}
The supply outputs cannot be controlled via the process image (PIO).
The module provides advanced diagnostic data, which is also available in a status byte in
the ST-PII (not in system environment B):
}
Output overload/short circuit
}
Excess module temperature
Signal detection at the inputs
}
A signal (“0” signal or “1” signal) is always ignored if it is present for less than the mini-
mum processing time (see Technical details).
}
A signal is always detected and transmitted to the process image (PII) if it is present for
longer than the maximum processing time plus the scan time of the module bus (t
2
+ t
3
,
see diagram and Technical details).
4
4.1
4.1.1