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Rules for Failsafe Operation of an S5-95F
Error Response from Slave Node
If a node fails to receive a valid frame within the stipulated SINEC L1 safety time for Receive,
•
The operating system sets bit 0 in the "Condition code and control byte for Receive" and clears
the Receive mailbox
•
The operating system flags an error in the SINEC L1 error word in system event data block
DB254
•
The operating system enters an error message in the error buffer in system event data block
DB254
•
The S5-95F responds as specified in DB1 (possible responses are a PLC STOP or the reaction
written in the user program)
18-40
S5-95F
EWA 4NEB 812 6210-02
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