Configuration Of Memobus/Modbus Command Message; Configuration Of Memobus/Modbus Response Messages - YASKAWA SI-P3 PROFIBUS-DP Technical Manual

Execute an Enter command to validate the written data and write a parameter to the drive. When F6-32 = 4, this
parameter is validated by writing the parameter to the drive and automatically executing the Enter command at the
same time. Refer to the MEMOBUS/Modbus Communications chapter in the drive Technical Manual for details
on the Enter command. Refer to the MEMOBUS/Modbus Data Table in the drive Technical Manual for a list of
monitor data using the MEMOBUS/Modbus message area.
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Configuration of MEMOBUS/Modbus Command Message

The Table 7.6 shows the configuration of MEMOBUS/Modbus command messages when the Extended Data 1 is
selected.
Byte
16 Function Code
17
Starting Register Number
18
19 Data Quantity
20
*1
Data 1
21
22
*1
Data 2
23
24
*1
Data 3
25
26
*1
Data 4
27
28 - 30 Reserved
31 Handshaking Register
*1 Setting is needed only for the write command. Select 00 (Hex.)for the read command.
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Configuration of MEMOBUS/Modbus Response Messages

The Table 7.7 shows the configuration of MEMOBUS/Modbus response messages when the Extended Data 1 is
selected.
Byte
16 Function Code
17
Starting Register Number
18
19 Data Quantity
20
*1
Data 1
21
22
*1
Data 2
23
24
*1
Data 3
25
YASKAWA SIEP C730600 82E PROFIBUS-DP Technical Manual
Table 7.6 MEMOBUS/Modbus Command Message
Name
MEMOBUS/Modbus command code:
03 (Hex.): Read command (reading Drive internal data)
08 (Hex.): Loopback Test
10 (Hex.): Write command (writing data into the drive)
Other codes: Not supported.
Starting Register Number
Sets the number of bytes to read or write (only 2, 4, 6, or 8 allowed)
Data word 1
Data word 2
Data word 3
Data word 4
Reserved
Refer to page 34.
Table 7.7 MEMOBUS/Modbus Response Messages
Name
MEMOBUS/Modbus response codes
00 (Hex.): Waiting for response from drive
03 (Hex.): Response to read operation
10 (Hex.): Response to write operation
83 (Hex.): Read command error
90 (Hex.): Write command error
Other codes: Not supported.
Starting Register Number
Write: Set double number of written data items.
Read: Set double number of read data items.
Data word 1
Data word 2
Data word 3
7 Conventional Formats
Function
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
Function
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
33