NORD Drivesystems BU0050 - Manual (Page 66)

NORD USS and Modbus RTU Manual
66 Subject to technical amendments BU 0050 GB-3111
2.5.5 06h Write Single Register
Enables writing of a single 16Bit parameter.
Master

Slave Slave

Master
Function Code 1 Byte 0x06 Function Code 1 Byte 0x06
Address 2 Byte 0x0000 to 0xFFFF Address 2 Byte 0x0000 to 0xFFFF
Parameter Value 2 Byte 0x0000 to 0xFFFF Parameter Value 2 Byte 0x0000 to 0xFFFF
Example:
Parameter P102, parameter set 2 is written with the value 0x0123 (see also the item "Parameter access" in
Section 2.8 Description of parameters).
Query (Master

Slave) Response (Slave

Master)
Address 0x08 Address 0x08
Function Code 0x06 Function Code 0x06
Address High 0x19 Address High 0x19
Address Low 0x81 Address Low 0x81
Parameter value High 0x01 Parameter value High 0x01
Parameter value Low 0x23 Parameter value Low 0x23
CRC High 0x9E CRC High 0x9E
CRC Low 0x6E CRC Low 0x6E
2.5.6 10h Write Multiple Register
This command enables several parameters to be written consecutively, and for parameters with a data length
of 32Bit.
In the process data area, all process data of the P050 parameter array can be written simultaneously.
If parameters are written with this access, only a single parameter can be written with a telegram. This access
is used to write 32Bit parameters.
NOTE
The parameter (P050) "Process data IN" and (P051) "Process data OUT" are executed in the
background and are not visible to the user. From a structural point of view, these are array
parameters ([-
01 … -04]). Assignment of the setpoints in parameter (P050) is carried out via
the parameters (P546 (… P548)). The return of the actual values in parameter (P051) is
assigned in parameters (P543 (… P545)).
Master

Slave Slave

Master
Function Code 1 Byte 0x10 Function Code 1 Byte 0x10
Start address 2 Byte 0x0000 to 0xFFFF Start address 2 Byte 0x0000 to 0xFFFF
Number of
parameters 2 Byte 0x0001 to 0x0004 Number of parameters 2 Byte 0x0001 to 0x0004
Number of bytes 1 Byte 0x01 to 0x08
Parameter Value N*2 Byte