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Manual – MOVIDRIVE® MDX60B/61B Communication and Fieldbus Unit Profile
7
Setting the inverter parameters
SEW Unit Profile
Read default
This service can be used to determine the factory setting (default) of a drive parameter.
Coding takes place in the same manner as the parameter value.
Read Scale
This service can be used to determine the scaling of a parameter. The inverter provides
a so-called measurement index and a conversion index.
Measurement index
The measurement index is used for coding physical values. This index is used to inform
a communication partner about the physical value of the associated parameter value.
Coding takes place according to the sensor/actuator profile of the PROFIBUS user
organization (PUO). The entry FF
hex
means that no measurement index is specified.
You can also obtain the measurement index from the parameter directory of the inverter.
Conversion index:
The conversion index serves for converting the transmitted parameter value into an SI
basic unit. Coding takes place according to the sensor/actuator profile of the PROFIBUS
user organization (PUO).
Example:
Drive parameter:
P131 ramp t11 down CW
Measurement index:
4 (= time with second as measurement unit)
Conversion index:
- 3 (10
-3
= milli)
Transmitted numerical value:3000 dec
The drive inverter interprets the numerical value received via bus as follows:
3000 s
×
10
-3
= 3 s
Byte 4
Byte 5
Byte 6
Byte 7
MSB data
Data
Data
LSB data
Reserved
Measurement index
Conversion index
Summary of Contents for MOVIDRIVE MDX60B
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