Conventional Formats - YASKAWA SI-P3/V Technical Manual

7 Conventional Formats

7 Conventional Formats
Conventional Formats
The configuration tool of PROFIBUS-DP master sets the input and output data length of SI-P3/V from Extended Data 1
(32 bytes), Extended Data 2 (12 bytes), and Basic Data (6 bytes).
Conventional formats have two message types: High-speed I/O Data and MEMOBUS/Modbus message.
Set parameter F6-32 to "1" to use conventional formats.
High-Speed I/O Data
High-speed I/O data is directly transferred to or from the drive and can control the drive. For example, when the drive is
set for PROFIBUS-DP communications, the drive Run/Stop and Frequency Reference commands are typically
transferred to the drive within 2 ms after being received by the option.
MEMOBUS/Modbus Message
MEMOBUS/Modbus message data is transferred to the drive using MEMOBUS/Modbus messages. All drive parameters
and data can be accessed through MEMOBUS/Modbus. Because the data in this message type is transferred to the drive
after the SI-P3/V receives and edits it, more time is required to return the data to the master. The master must synchronize
the timing of sending and receiving the data by handshaking.
Memory Maps
The following memory maps show the I/O data bytes.
Basic and Extended Register Maps
High-speed I/O Data
MEMOBUS/Modbus Data
Output (Master Device to Drive)
Byte
0 Operation Command (High Byte)
1 Operation Command (Low Byte)
2 Frequency Reference (High Byte)
3 Frequency Reference (Low Byte)
4
Reserved
5
<1> Unit depends on the setting of o1-03 (Digital Operator Display Scaling). When the drive is operating in the V/f Control mode, the drive's output
frequency becomes the input data.
<2> Data is displayed in units of either 0.01 A for drives 7.5 kW and smaller, or in units of 0.1 A for drives 11 kW and larger. This is the same
regardless of whether the drive is set for Normal Duty or Heavy Duty operation.
Output (Master Device to Drive)
Byte
0 Operation Command (High Byte)
1 Operation Command (Low Byte)
2 Frequency Reference (High Byte)
3 Frequency Reference (Low Byte)
18
Basic Data
(6 bytes)
Bytes 0 to 5
–
Table 9 Basic Data Register Map Detail
Description
Table 10 Extended Data 1 Register Map
Description
YASKAWA ELECTRIC SIEP C730600 23B V1000 Option PROFIBUS-DP Technical Manual
Extended Data 1
(32 bytes)
Bytes 0 to 15
Bytes 16 to 31
Input (Drive to Master Device)
Byte
0 Drive Status (High Byte)
1 Drive Status (Low Byte)
2 Motor Speed (High Byte)
3 Motor Speed (Low Byte)
4 Output Current (High Byte)
5 Output Current (Low Byte)
Input (Drive to Master Device)
Byte
0 Drive Status (High Byte)
1 Drive Status (Low Byte)
2 Motor Speed (High Byte)
3 Motor Speed (Low Byte)
Extended Data 2
(12 bytes)
Bytes 0 to 3
Bytes 4 to 11
Description
<1>
<1>
<2>
<2>
Description
<3>
<3>