Beckhoff TwinSAFE logic FB

Function blocks
Function blocks for TwinSAFE logic components 145
3.21.2 Signal description
Table 3-127: FB LIMIT inputs
Name
Permitted type
Data type
Description
AnalogIn
TwinSAFE-In
FB-Out
Standard-In
TwinSAFE SC
INT16
INT32
UINT16
UINT32
Input channel for limitation
MinValue
TwinSAFE-In
FB-Out
Standard-In
TwinSAFE SC
INT16
INT32
UINT16
UINT32
Minimum value
MaxValue
TwinSAFE-In
FB-Out
Standard-In
TwinSAFE SC
INT16
INT32
UINT16
UINT32
Maximum value
Table 3-128: FB xxx outputs
Name
Permitted type
Data type
Description
Error
TwinSAFE-Out
FB-In
Standard-Out
BOOL
Error output (see diagnostic information)
InLimit
TwinSAFE-Out
FB-In
Standard-Out
BOOL
Value is within the minimum/maximum limits
BelowMin
TwinSAFE-Out
FB-In
Standard-Out
BOOL
Value is below the minimum limit
AboveMax
TwinSAFE-Out
FB-In
Standard-Out
BOOL
Value is above the maximum limit
Table 3-129: Input and output types
Type
Description
TwinSAFE-In
TwinSAFE input of an EL1904/KL1904, e.g.
Standard-In
Standard PLC variable (output in the PLC %Q*)
FB-Out
TwinSAFE FB output
TwinSAFE-Out
TwinSAFE output of an EL2904/KL2904, e.g.
Standard-Out
Standard PLC variable (input in the PLC %I*)
FB-In
TwinSAFE FB input
TwinSAFE SC
Input of a TwinSAFE connection (TwinSAFE SC technology)
Table 3-130: Internal identifier of the FB
Type
Description
FB LIMIT
This description applies to BLG 1.0 (internal version number)