Function blocks
Function blocks for TwinSAFE logic components 153
3.23.2 Signal description
Table 3-141: FB Scale inputs
TwinSAFE-In
FB-Out
Standard-In
TwinSAFE SC
INT16
INT32
UINT16
UINT32
Table 3-142: FB Scale outputs
TwinSAFE-Out
FB-In
Standard-Out
Error output (see diagnostic information)
TwinSAFE-Out
FB-In
Standard-Out
Output that is set if the AnalogIn input remains
unchanged over the parameterized period
TwinSAFE-Out
FB-In
Standard-Out
INT16
INT32
UINT16
UINT32
Output with the scaled input signal
Processing order:
• AnalogIn negation
• Nominator multiplication scaling factor
(configurable)
• Denominator division scaling factor
(configurable)
• Addition scaling offset
Table 3-143: Input and output types
TwinSAFE input of an EL1904/KL1904, e.g.
Standard PLC variable (output in the PLC %Q*)
TwinSAFE output of an EL2904/KL2904, e.g.
Standard PLC variable (input in the PLC %I*)
Input of a TwinSAFE connection (TwinSAFE SC technology)
Table 3-144: Internal identifier of the FB
This description applies to BLG 1.0 (internal version number)
3.23.2.1 Diagnostic and state information for the FB Scale1
Table 3-145: Diagnostic information
No diagnostic information
The AnalogOut output has an underflow (is less than the smallest possible value)
The AnalogOut output has an overflow (is greater than the largest possible value)
A 32-bit overflow occurred during the multiplication.
A 32-bit overflow occurred during the division due to rounding.