Toshiba TOSVERT VF-AS3 Function Manual

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8.4. "03 (0x03) Read Holding Registers" function
This Modbus request is used to read a value continuously from contiguous inverter parameters.
Communication number of inverter parameter is set in hexadecimal. However, in the case of continuous
reading, communication number is rounded up at 0xA. For example, if you read inverter parameter
continuously from the parameter f109 (Communication No. is 0x0109), the next reading parameter is
f110 (Communication No. is 0x0110).
Request Format:
Byte Meaning
0 Function Code = 03h
1 Communication No. of Starting Parameter Hi
2 Communication No. of Starting Parameter Lo
3 Number of Parameters Hi (0)
4 Number of Parameters Lo (1 - 125)
Response format:
Byte Meaning
0 Function Code = 03h
1 Byte Count (B = 2 × Number of Points)
2 First Parameter Data Hi
3 First Parameter Data Lo
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B Last Parameter Data Hi
B+1 Last Parameter Data Lo
Exception response format:
Byte Meaning
0 Function Code = 83h
1
Exception Code
01: Illegal Function
02: Illegal Data Address
03: Illegal Data Value
Notes
If the communication number that doesn't exist is read, This product returns 0x8000.

Toshiba TOSVERT VF-AS3 Specifications

General

Model	TOSVERT VF-AS3
Category	Inverter
Overload Capacity	150% for 60 seconds
Cooling Method	Forced Air Cooling
Control Method	V/f control, Sensorless vector control
Braking Unit	Built-in
Communication Protocols	Modbus RTU, DeviceNet, Profibus DP
Protection Functions	Overcurrent, Overvoltage, Undervoltage, Overheat, Ground Fault
Enclosure	IP20
Operating Temperature	-10°C to +50°C
Humidity	5-95% (non-condensing)
Altitude	Up to 1000m