Operation
Operating Manual PNOZ m EF SafetyNET
1004535-EN-03
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7.2
Diagnostics and behaviour in case of an error
Each base unit contains information about
}
The state of its SafetyNET p receive connections (inputs of all devices from which it is re-
ceived).
}
The connection state of the Ethernet interface X1 In and X2 Out of the own SafetyNET p
module (helpful when checking the cabling of the SafetyNET p subscribers).
}
The role of the own SafetyNET p module within a SafetyNET p line topology (bus master
or subscriber).
When the receive connection is interrupted, the base units switch the virtual inputs to "0".
The output data continue to be transferred via SafetyNET p.
The base unit remains in a RUN condition.
Bus master
During configuration of a SafetyNET p RTFL network, exactly one subscriber is always as-
signed the role of the bus master. The assignment is automatic when creating the
SafetyNET p project.
Via the base unit, it can be evaluated what subscribers were assigned the role of bus mas-
ter.
The subscriber with the role of bus master may be connected at each position of the
SafetyNET p line, just as other subscribers.
This specific subscriber provides the following additional information to the base unit:
}
Whether the number of configured SafetyNET p modules matches the number of connec-
ted SafetyNET p modules.
}
Whether the device address of the configured SafetyNET p modules matches the device
address of the connected SafetyNET p modules.
