4 parameter attributes, Parameter attributes, 11 parameter reference – Lenze 8400 motec User Manual
Page 330

11
Parameter reference
11.1
Structure of the parameter descriptions
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Lenze · 8400 motec · Reference manual · DMS 4.1 EN · 08/2013 · TD05
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11.1.4
Parameter attributes
The table footers contain the parameter attributes:
Scaling factor
The "scaling factor" is important for parameter access via a bus system.
Example 1: The value "654" of the parameter
(AIN1: input voltage) read via a bus system
must be divided by the corresponding scaling factor "100" to obtain the actual display value
"6.54 V".
[11-1] Conversion formula for read access via bus system
Example 2: In order to set the parameter
(acceleration time - main setpoint) to the value
"123.4 s" via a bus system, the integer value "123400" must be transferred, i.e. the value to be set
must be multiplied by the corresponding scaling factor "1000".
[11-2] Conversion formula for write access via bus system
Character length
In case of parameters of "VISIBLE_STRING" data type, the character length is given in addition. This
is also important for the parameter access via a bus system.
Read access Write access CINH PLC STOP No transfer COM MOT
Scaling factor: 1
Attribute
Meaning
Read access
Read access to parameter possible.
Write access
Write access to parameter possible.
• Please also observe the following attributes:
CINH
Parameter value can only be changed when the controller is
inhibited.
PLC STOP
Parameter value can only be changed when the application is
stopped.
No transfer
Parameter is not transferred to controller when the command Download parameter set is
executed.
COM
Communication-relevant parameter
• This parameter is relevant for parameter data transfer via the (CAN) system bus.
MOT
Motor control parameters
Signal type
Scaling factor
Resolution
Value range
Analog (scaled)
100
16 bits signed
± 199.99 %
Angular velocity
1
16 bits signed
± 32767 incr./ms
Position in [units]
10000
32 bits signed
± 214748.3647 [units]
Digital (BOOL)
1
8 bits unsigned
0 ≡ FALSE; 1 ≡ TRUE
Time
1000
16 bits unsigned
0 ... 999.000 s
Selection value
1
16 bits unsigned
0 ... 65535
Read value (via bus system)
Scaling factor
-----------------------------------------------------------------------
Indicated value (Engineer)
=
Value to be written (via bus system)
Value to be set Scaling factor
⋅
=