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Function Blocks
MBS Modbus Slave Function Block
202
HC900 Hybrid Control Designer Function Block Reference Guide
Revision 11
2/07
Properties Function
Parameter
Index #
Parameter Description
Value or Selection
Function
Code
N/A
Several standard Modbus
RTU function codes are
supported. These
standard function codes
provide basic support for
IEEE 32-bit floating point
numbers and 16-bit
integer register
representation of
instrument’s process data
Preset Single Registers –
Function Code 06
Preset Multiple Registers
– Function Code 10 hex
The function code for
“Unsigned 16 or Signed 16,”
register data type is
06 –
Preset Single Registers*
presets integer value into a
single register..
The function code for
“Float,
Unsigned 32 or Signed 32,”
register data type is
10 hex –
Preset Multiple Registers*
presets values into holding
registers.
*
automatically selected when
you select “Register Data Type”
NOTE: Refer to the
Communications manual for the
function codes supported by the
specific device.