Lenze 8400 TopLine - Manual (Page 1727)

Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
1727
19 Function library
19.2 System blocks
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
19.2.37 LS_RetainData
This system block serves to select and save retain data similar to the FBs L_SampleHold_1 and
L_SampleHold_2 .
• Retain data are values that are saved automatically at mains disconnection or disconnection of
the 24-V supply in the controller and are restored when the 24-V supply is switched on again.
• A total of 12 retain data can be stored in the retain memory:
• 4 WORD signals (16 bits, 0 ... 65535)
• 4 DINT signals (32 bits, -2147483647 ... 2147483647)
• 4 BOOL signals (FALSE or TRUE)
Inputs
Identifier
Data type
Information/possible settings
bLoadParams
BOOL
Set selected outputs & retain values to parameter values.
• This input has priority over the bSetRetain inputs.
• Typical application: Initialisation of the outputs & retain values.
FALSE The input or retain values are output, depending on the bSetRetain
input.
TRUE The outputs selected in C01130/4 and the respective retain values
are set to the parameter values and held as long as bLoadParams is
TRUE.
If the parameter values change during this time, the respective
outputs and retain values change as well.
bSetRetain_1...3
BOOL
Transfer selected input values to the retain memory ("latch")
FALSE No transfer. Retain values or parameter values (when
bLoadParams = TRUE) are provided at the outputs.
TRUE The input values selected in C01130/1...3 are stored in the retain
memory and provided at the outputs.
wIn1 ... wIn4
WORD
Input values
dnIn1 ... dnIn4
DINT
bIn1 ... bIn4
BOOL
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