BECKHOFF EL6900-FB - Manual (Page 40)

Function blocks
38 Function blocks for TwinSAFE logic terminals
Table 3-22: FB MON outputs
Name Permitted type Description
Error TwinSAFE-Out
FB-In
Standard-Out
Local-Out
TRUE:
The discrepancy time monitoring of an input pair, or one of the
feedback loops, has found an error. The error reset must be
carried out via the ERR_ACK input of the related TwinSAFE
group.
FALSE:
No error was found.
MonOut TwinSAFE-Out
FB-In
Standard-Out
Local-Out
1 st output channel, the safe state corresponds to a logical 0.
MonDelOut TwinSAFE-Out
FB-In
Standard-Out
Local-Out
2 nd output channel, the safe state corresponds to a logical 0. The
safe state is output with a delay, which corresponds to the
parameterized Delay Time.
Table 3-23: FB MON 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
Local-Out TwinSAFE output at the KL6904 (not available for EL6900)
3.5.2.1 Diagnostic and status information for FB MON
Table 3-24: Diagnostic information (16-bit value)
Index Description
0 Discrepancy error input group 1
1 Discrepancy error input group 2
2 Discrepancy error in Secure input group
4 EDM monitoring error EDM1
5 EDM monitoring error EDM2