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

Page 330

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11

Parameter reference

11.1

Structure of the parameter descriptions

330

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

C00028/1

(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

C00012

(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

=

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