BECKHOFF EL6900-FB - Manual (Page 80)

Function blocks
78 Function blocks for TwinSAFE logic terminals
3.14.2 Signal description
Table 3-66: FB CONNECTION SHUTDOWN inputs
Name Permitted type Description
Deactivate1 TwinSAFE-In
FB-Out
1 st input channel. The parameterization determines, whether the
input is linked to a normally closed contact (safe state will be
requested by logical 0) or normally open contact (safe state will be
requested by logical 1).
Deactivate2 TwinSAFE-In
FB-Out
2 nd input channel, behaves like Deactivate1
If the discrepancy time is not equal 0, the 1 st and 2 nd input channel
are considered to be the 1 st input group and a discrepancy time
monitoring is carried out between both channels, if one of the two
input channels requests the safe state.
Table 3-67: FB CONNECTION SHUTDOWN outputs
Name Permitted type Description
Error TwinSAFE-Out
FB-In
Standard-Out TRUE:
The discrepancy time monitoring for a 2-channel input group has
detected an error. The error must be acknowledged via the
ERR_ACK input of the corresponding TwinSAFE group
FALSE:
No error was found
Deactivated TwinSAFE-Out
FB-In
Standard-Out
1 st output channel, the safe state corresponds to a logical 0.
The output is set once the connection is terminated.
Table 3-68: FB CONNECTION SHUTDOWN input and output types
Type Description
TwinSAFE-In TwinSAFE input at an EL1904/KL1904
Standard-In Standard PLC variable (output in the PLC %Q*)
FB-Out TwinSAFE FB output
TwinSAFE-Out TwinSAFE output at an EL2904/KL2904
Standard-Out Standard PLC variable (input in the PLC %I*)
FB-In TwinSAFE FB input