YASKAWA SI-P3V, Technical Manual, Page: 18 / 40

18 YASKAWA ELECTRIC SIEP C730600 23B V1000 Option PROFIBUS-DP Technical Manual
7 Conventional Formats
7 Conventional Formats
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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.
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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.
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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.
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Memory Maps
The following memory maps show the I/O data bytes.
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Basic and Extended Register Maps
Table 9 Basic Data Register Map Detail
Table 10 Extended Data 1 Register Map
Basic Data
(6 bytes)
Extended Data 1
(32 bytes)
Extended Data 2
(12 bytes)
High-speed I/O Data Bytes 0 to 5 Bytes 0 to 15 Bytes 0 to 3
MEMOBUS/Modbus Data – Bytes 16 to 31 Bytes 4 to 11
Output (Master Device to Drive) Input (Drive to Master Device)
Byte
<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.
Description Byte Description
0 Operation Command (High Byte) 0 Drive Status (High Byte)
1 Operation Command (Low Byte) 1 Drive Status (Low Byte)
2 Frequency Reference (High Byte) 2 Motor Speed (High Byte)
<1>
3 Frequency Reference (Low Byte) 3 Motor Speed (Low Byte)
<1>
4
Reserved
4 Output Current (High Byte)
<2>
5 5 Output Current (Low Byte)
<2>
Output (Master Device to Drive) Input (Drive to Master Device)
Byte Description Byte Description
0 Operation Command (High Byte) 0 Drive Status (High Byte)
1 Operation Command (Low Byte) 1 Drive Status (Low Byte)
2 Frequency Reference (High Byte) 2 Motor Speed (High Byte)
<3>
3 Frequency Reference (Low Byte) 3 Motor Speed (Low Byte)
<3>