Lenze PLC Designer R3-x - Manual (Page 146)

The L_LCB_LogicControlBasic library
L_LCB_SpeedToUnit - speed value conversion
146
Lenze · Commissioning of Lenze drives · 1.3 EN - 06/2014
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13.28 L_LCB_SpeedToUnit - speed value conversion
This FB converts a speed value specified in the internal unit [rpm] into a speed value in the real unit
of the machine on the basis of the machine parameters transmitted.
Inputs
Outputs
Function library: L_LCB_LogicControlBasic
Runtime software licence:  LPC 1x00  MPC 1x00  MPC 2xx0  MPC 3x00
L_LCB_SpeedToUnit
DINT ⎯ diSpeedIn_s diSpeedOut_e4 ⎯ DINT
L_LCB_SetAxisData -
machine parameters
⎯ scAxisData xLimit ⎯ BOOL
xError ⎯ BOOL
eError ⎯
L_LCB_Error
Identifier/data type Information/possible settings
diSpeedIn_s
DINT
Velocity as speed in [rpm] 15000 rpm ≡ 2 26 = 67108864
scAxisData
L_LCB_SetAxisData -
machine parameters
Machine parameters
Identifier/data type Value/meaning
diSpeedOut_e4
DINT
Speed in [unit/s]
• Display in "e4" view (fixed point with four decimal positions)
xLimit
BOOL
"Output signal is limited" status
• TRUE: The output signal is limited to the representable value range
±214748.3647.
xError
BOOL
"Error" status signal
FALSE Conversion carried out without errors
TRUE Error during the conversion
eError
L_LCB_Error
Error number, error code