YASKAWA SI-P3/V Technical Manual page 21

• Refer to the MEMOBUS/Modbus Data Table in Appendix C of the V1000 Technical Manual for a list of monitor data
using the MEMOBUS/Modbus message area.
Configuration of MEMOBUS/Modbus Command Message
Table 14 shows the configuration of MEMOBUS/Modbus command messages when the Extended Data 1 is selected.
Byte
16 Function code
17
Starting Resistor No.
18
19 Number of Data Items
20
Data 1
<1>
21
22
Data 2
<1>
23
24
Data 3
<1>
25
26
Data 4
<1>
27
28
29 Reserved
30
31 Handshaking Register
<1> Setting is needed only for the write command. Select 00H for the read command.
Configuration of MEMOBUS/Modbus Response Messages
Table 15 shows the configuration of MEMOBUS/Modbus response messages when the Extended Data 1 is selected.
Byte
16 Function code
17
Starting resistor No.
18
19 Number of data items
20
Data 1
<1>
21
22
Data 2
<1>
23
24
Data 3
<1>
25
26
Data 4
<1>
27
28
29 Reserved
30
31 Handshaking register
<1> Data is returned only for the read command.
YASKAWA ELECTRIC SIEP C730600 23B V1000 Option PROFIBUS-DP Technical Manual
Table 14 MEMOBUS/Modbus Command Message
Name
MEMOBUS/Modbus command code:
03H: Read command (reading Drive internal data)
08H: Loop back
10H: Write command (writing data into the drive)
Other codes: Not supported
Starting resistor No.
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
Table 15 MEMOBUS/Modbus Response Messages
Name
MEMOBUS/Modbus response codes
00H: Waiting for response from drive
03H: Response to read operation
10H: Response to write operation
83H: Read command error
90H: Write command error
Other codes: Not supported.
Starting resistor No.
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
Data word 4
Refer to
Function
Handshaking Register on page
Function
Handshaking Register on page
7 Conventional Formats
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
23.
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
23.
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