Modbus Programming Registers - Toshiba TOSVERT-130 G3 Interface Manual

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9. Modbus Programming Registers

How To Use This Section:
This section contains tables which describe all of the registers and coils accessible
from the Modbus network. The descriptions for the columns in the listed tables are as
follows:
Register / Coil....The register number / coil number used to access the parameter.
Bit ......................This column only applies to write-only registers (section 9.1) and
read-only registers (section 9.2). If the register is comprised of a
collection of individual bit-oriented command/status items (for
example, register 02), this column will indicate which bit(s) in the
word-sized register the corresponding parameter described in the
Function column uses (bit 0 = LSB, bit F = MSB). If the parameter
uses the whole register, "word" will appear in this column, indicating
the parameter consumes the entire register (this does not mean,
however, that all register bits are used: refer to the explanation for
Mask below). All read/write registers (section 9.3) have word-size
data. Other possible values in this column are "low byte" (bits 0 ∼ 7)
and "high byte" (bits 8 ∼ F).
Function.............Describes the function accessed through this holding register.
Bank ..................0 = RAM (volatile), 1 = EEPROM (nonvolatile), 0/1 = RAM &
EEPROM, DPRAM = interface board dual-port RAM (volatile), 2 & 3 =
code space (read-only). IMPORTANT: the inverter's EEPROM has
a life span of 10,000 write cycles. Do not write to a read/write holding
register whose bank is listed as 1 or 0/1 more than 10,000 times.
Mask .................The data bits within a register that are not covered by the
hexadecimal mask (for example, bits 8 ∼ F if the mask is 00FF) will
always be returned as 0 during data reads and will be ignored during
data writes. For example, if a hexadecimal value of AB98 is sent to a
register whose mask is 00FF, the actual value written to the register's
corresponding parameter will be 0098. As this is not considered an
error, no exception response will be generated if this type of
extraneous data condition occurs.
Adjustment Range ... Indicates valid data settings in real terms (Hz, ON/OFF, etc.)
Multiplier ............Indicates scaling factor used to convert Adjustment Range data into
integer values. The equation used for this conversion is:
Actual Holding Register Data = Real Data ÷ Multiplier
For example, if 60.00Hz frequency command were desired, register
01 must be set to [60.00 ÷ 0.01] = 6000 decimal (= 1770 hex).
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