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ICC
Num Regs
This field is the number of registers to remap. Enter a value of 1 or more.
Database Addr
This field is the database address where the remapping begins. Enter a value
between 0 and 4094 (0x0 – 0xFFE).
Register Type
Select the appropriate register type(s) for the register remap. Both Holding
Register and Input Register can be selected together or individually.
8.7.12.3.1 32-Bit Extension Options
If the target registers are associated with the Enron/Daniel extension to the
Modbus specification, or are represented by 32-bit values, check the
Enable
Enron/Daniel 32-bit Extension
checkbox to enable the 32-bit extension option.
The following describes each of the extension options:
Floating Point
Enable
Floating Point
if the transmitted values are to be encoded in IEEE 754
floating point format.
Big Endian
Enable
Big Endian
if the transmitted values are to be encoded in big-endian, 16-
bit word order, i.e. the most significant 16-bit word is before the least significant
16-bit word.
Word-Size Register
Enable
Word-Size Register
if each target register is 16-bits wide, but two 16-bit
registers are to comprise one 32-bit value. If not enabled, each of the target
registers is assumed to be 32-bits wide.
Note that when
Word-Size Register
is enabled, the
Num Regs
field name
changes to
Num Reg Pairs
, indicating the number of pairs of 16-bit wide
registers to be addressed. When enabled, each register pair will use two register
addresses and the selected
Data Type
will be applicable for the register pair, not
the individual registers. For example, if the
Start Reg
is 100,
Num Reg Pairs
is
2, and
Data Type
is 32-bit Unsigned, then register numbers 100 – 103 will be
remapped, with registers 100 and 101 representing the first 32-bit Unsigned
value and registers 102 and 103 representing the next 32-bit Unsigned value in
the gateway’s database.
Word Count
Enable
Word Count
to interpret the Modbus “quantity of registers” field as the
number of 16-bit words to be transferred. If not enabled, the “quantity of
