KROHNE GFC 300 Modbus - Manual (Page 14)

6
MODBUS PROTOCOL
14
GFC 300
www.krohne.com 03/2012 - 7312402100 - AD Modbus GFC 300 R01 en
6.8 Holding registers
All holding registers in the Modbus protocol address range from 40000 to 49998 are mapped into
the range 0 to 9998. This is done to give systems with restriction on the address range access to
the device.
Some parameters of the device can be accessed as Modbus "holding registers".
Function code 03 (0x03) for "Read" operations and function code 16 (0x10) for "Write" operations.
The holding registers are grouped into the following different sections.