Hitachi NES1-004SB Quick Reference Manual page 175

(B) Modbus Holding Registers
The following tables list the holding registers for the inverter interface to the network. The table
legend is given below.
 Function name - The standard functional name of the parameter or function for the inverter
 Function code - The inverter's reference code for the parameter or function (same as inverter
keypad display)
 R/W - The read-only(R) or read-write access(R/W) permitted to the data in the inverter
 Monitoring and setting items - How the parameter or setting works (same as Chapter 3
description).
 Register No. - The network register address offset for the value. Some values have a high-byte
and low-byte address.
 Resolution - This is the quantity represented by the LSB of the network value, in engineering
units. When the network data range is greater than the inverter's internal data range, this 1-bit
resolution will be fractional.
Note): The network values are binary integers. Since these values cannot have an embedded decimal
point, for many parameters it represents the actual value (in engineering units) multiplied by a factor
of 10 or 100. Network communications must use the listed range for network data. The inverter
automatically divides received values by the appropriate factor in order to establish the decimal
point for internal use. Likewise, the network host computer must apply the same factor when it
needs to work in engineering units. However, when sending data to the inverter, the network host
computer must scale values to the integer range listed for network communications
(1) Registers (frequency, status, trip monitor)
Register
Function name
No.
0000h unused
0001h
Frequency source
0002h
0003h Inverter status A
0004h Inverter status B
0005h Inverter status C
0006h PID feedback
0007h to
(Reserved)
0010h
Chapter 8 Communication Functions
Function
R/W
code
- - Inaccessible
F001 (high) R/W 0 to 40000 (valid when A001/A201 = 03)
F001 (low) R/W
0: Initial status
2: Stopping
- R 3: Running
4: Free-run stop
5: Jogging
- R 0: Stopping, 1: Running, 2: Tripping
0: ---
1: Stopping
2: Decelerating
- R 3: Constant-speed
operation
4: Accelerating
5: Forward rotation
- R/W 0 to 10000
- R -
8 - 21
Monitoring and setting items
6: DC braking
7: Retrying
8: Tripping
9: Undervoltage (UV),
6: Reverse rotation
7: Switching from fwd.
to rev. rotation,
8: Switching from rev.
to fwd. rotation,
9: Starting fwd.
10: Starting rev.
Data
resolution
0.01 [Hz]
-
-
-
0.01 [%]
-