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MODBUS
45
RS485/RS232 Communications Interface
Data types
ID Data
Type
0
32-bit fixed point
1 Boolean
2
32 bit integer
3
16 bit word
4
Null terminated character string.
Write Qualifiers
Qualifier Description
0
Parameter is writable
1
Parameter may only be written to when the drive is in
comfiguration mode
2
Parameter is read-only.
6. Accessing data as 32 bits.
This feature is available in version 5.x onwards.
Within the 650 many parameters are held as 32 bit values. These may be read and written using
pairs of Modbus registers. To access the parameters in this way the mapping of tag numbers to
Modbus register addresses has been extended.
To access a parameter as a 32-bit value, use the Modbus register pair starting at the address
given by ((parameter tag number) * 2) + 10000. Always access the lower register first.
Parameters of data type 0, (32-bit fixed point), will be returned in IEEE floating point format
when accessed as 32-bit value. These parameters should be written to in this format.
Summary of Contents for 6513
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