Parker AC30 Série Mode D'emploi page 205

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Fixed Parameter Mapping - Strings

Strings parameters have a parameter number that represents the whole string. This parameter number is mapped to two registers so limits

access to the first four characters. Additional contiguous parameter numbers are set aside so that the whole string can be accessed: one

additional parameter number for each four characters. The strings are packed into the registers low byte first.

String Example

A string parameter called My String has a string length of 12 characters (plus the null terminator). This will have one parameter number allocated

for the whole string (in this example 161) and 3 further parameter numbers for the string fragments (162-164).

If the value of the string is "0123456789AB":

Note: This is example is not a real parameter.

As each inverter parameter maps to two registers, if the registers that represent the whole string are accessed then only the first four characters

will appear. To access the whole string over Modbus use the registers that map to the parameter number of the whole array plus one, in this

example 0162 (register 00851). A multiple read or write of registers will then provide access to the whole string.

whole string

"0123456789AB"

AC30 series Variable Speed Inverter

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