LS ELECTRIC LSLV-H100 Series, Руководство пользователя

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RS-485
Communication Features
355
7.3.7.1 Function Code and Protocol
In the following section, station ID is the value set at COM-01 (Int485 St ID), and the starting
address is the communication address (starting address size is in bytes). For more
information about communication addresses, refer to
7.3.8 Compatible Common Area
Parameter on page 358.
Reading up to 8 Consecutive Inverter Parameters Based on the Set Number - Read
Holding Register (Func. Code: 0x03) and Read Input Register (Func. Code: 0x04)
Read Holding Registers (Func. Code: 0x03) and Read Input Registers (Func. Code: 0x04)
are processed identically by the inverter.
Codes Description
Start Addr.
Starting address 1 of the inverter parameters (common area or keypad) to
be read from.
No. of Reg. Number of the inverter parameters (common area or keypad) to be read.
Byte Count
Byte number of normal response values based on the number of registers
(No. of Reg).
Except. Code Error codes
Request
Slave
Station ID Func.
Code Start
Addr (Hi) Start
Addr (Lo) No of Reg
(Hi) No of Reg
(Lo) CRC
(Lo) CRC
(Hi)
1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte
Normal Response
Slave
Station ID Func.
Code Byte
Count Value
(Hi) Value
(Lo)
…
Value
(Hi) Value
(Lo) CRC
(Lo) CRC
(Hi)
1 byte 1 byte 1 byte 1 byte 1 byte
… 1 byte 1 byte
1 byte 1 byte
* The number of Value(Hi) and Value(Lo) is changed by the [Request No. of Reg].
Error Response
Slave Station ID Func. Code Except. Code CRC(Lo) CRC(Hi)
1 byte 1 byte 1 byte 1 byte 1 byte