Function description
Operating Manual PSSu E F PS1(-T)
21298-EN-06
15
4.2.2
Integrated protection mechanisms
The module has the following protection mechanisms:
}
Infeed for module supply
– Polarity protection
– Voltage monitoring
– Transient voltage limitation
}
Module supply
– Short circuit-proof
}
Periphery supply
– Voltage monitoring (exceeding upper/lower limit)
The module registers the following errors:
}
Start-up error
}
Configuration error
}
FS communication error
}
Bus termination error
}
Temperature error: too warm
}
Overvoltage error
}
Undervoltage error
}
Error in the overvoltage protection diodes
4.3
Configuration
4.3.1
Application as a general supply module
The module can provide a standard bus system with various status information. To do this,
the general supply voltage module (the first module after the head module) must be con-
figured for read access. The configuration is made in the PSSuniversal Configurator in the
PSS WIN-PRO system software:
}
Read access through the standard bus system:
“R” configuration
Further information on configuration is available in the PSSuniversal Configurator's online
help.
4.3.2
Addresses in the process image
If read access is configured, the module occupies 8 consecutive bit addresses in the ST-PII
process image. The first supply module after the head module on slot 0 supplies status in-
formation about the PSSu system.
Configuration
SafetyBUS p
Standard bus system
FS-PIO
ST-PII
ST-PIO
None
- - -
- - -
- - -
Read ST
(“R”)
8 Bit
- - -
