YASKAWA PROFIBUS-DP SI-P3 Technical Manual page 31

Byte
24
Data 3
<1>
25
26
Data 4
<1>
27
28 to 30 Reserved
31 Handshaking register
<1> Data is returned only for the read command.
If an error occurs, the option sets the Most Significant Bit (MSB) in the MEMOBUS/Modbus response code to 1 and
returns the error response. The number of data items is set to 02H and an error code is written into the Low Byte of Data
Refer to the MEMOBUS/Modbus Communications chapter in the drive Technical Manual for the details on
MEMOBUS/Modbus error codes.

Parameter Settings Using MEMOBUS/Modbus Commands
The written or read data of each parameter is transferred in a hexadecimal value.
Negative values are expressed as a two complement.
Example 1: The frequency reference is 30Hz.
30 Hz/0.01 Hz = 3000 → BB8H
Example 2:–5% is assigned as the bias for terminal FM of multi-function analog output 1.
5/0.1 = 50 → 32H
Converted into a two complement → FFCEH
Example 3:60.00 Hz is assigned for d1-01 (register No.: 0280H).
60.00 Hz/0.01 Hz = 6000 → 1770H
Table 17 Parameter Settings Using MEMOBUS/Modbus Commands
Byte
16 Function code
17
Starting Register No.
18
19 Number of Data Items
20
Data 1
21
22
Data 2
23
24
Data 3
25
26
Data 4
27
28 to 30 Reserved
31 Handshaking Register
<1> Depends on the status of the previous data.
<2> Depends on the status of the fault.
YASKAWA ELECTRIC SIEP C730600 82D YASKAWA AC Drive Option SI-P3 Technical Manual
Name
Data word 3
Data word 4
Refer to Handshaking Register on page 32
Name
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
High Byte
Low Byte
<1>
Command Message Response Message
10H
02H
80H
02H
17H
70H
00H
00H
00H
00H
00H
00H
00H
80H
7 Conventional Formats
Function
High Byte
Low Byte
High Byte
Low Byte
for details.
Data
Response Message
(at Fault)
10H
02H
80H
02H
00H
00H
00H
00H
00H
00H
00H
00H
00H
80H
<2>
90H
00H
00H
02H
00H
02H
00H
00H
00H
00H
00H
00H
00H
80H
31