Festo CECX-X-C1 Series, Manual

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The Festo_Motion.lib library
20
1.9.3 Parameterisation function blocks
Function block xxx_PRM_SINGLE
The xxx_PRM_SINGLE block transfers an individual parameter to the relevant drive controller.
Figure: Example of function block CMMP_AS_PRM_SINGLE
1. Inputs and outputs
The following table contains a list of inputs and outputs that the function block xxx_PRM_SINGLE has to
parameterise a motor controller.
Input/output Type Description
Execute BOOL Start transfer
0->1: A rising edge starts transfer of a parameter
Write BOOL Read/write
= 0:Read parameter
= 1:Write parameter
Prerequisite: UpperLimit = 0, LowerLimit = 0
UpperLimit BOOL Read upper limit value
= 1: Read upper limit value
Prerequisite: Write = 0, LowerLimit = 0
LowerLimit BOOL Read lower limit value
= 1: Read lower limit value
Prerequisite: Write = 0, UpperLimit = 0
PNU WORD Number of the corresponding parameter
Subindex SINT Subindex of the corresponding parameter
DatatypeWR USINT Data type of the parameter to be written
= 1: Byte
= 2: Word
= 4: Double word
ParamValueWR DINT Parameter value when writing a parameter
DATA_REF VAR_IN_OUT FPC data structure
Data structure provided by FB ..._PRM_INIT
Done BOOL Transfer status
= 0: Transfer has not been initiated
= 1: Transfer has been initiated
Err BOOL Error
= 0: No error during parameter transfer
= 1: Error during parameter transfer
ErrStr STRING(80) Outputs an error message as a string
ActPNU WORD Current number of the corresponding parameter
ActSubindex SINT Current subindex of the corresponding parameter