Profibus-Dp Option Data And I/O Maps - YASKAWA SI-P3 Installation Manual

7 PROFIBUS-DP Option Data and I/O Maps

7 PROFIBUS-DP Option Data and I/O Maps
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Conventional Formats
The PROFIBUS-DP master configuration tool sets the I/O data length of the option 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
n
High-speed I/O data is directly transferred between the drive and controller or PLC. When
the drive is set for PROFIBUS-DP communications, the drive Run/Stop and Frequency
Reference commands are transferred within 2 ms after being received by the option.
MEMOBUS/Modbus Message
n
MEMOBUS/Modbus message data is transferred between the drive and controller or PLC
using MEMOBUS/Modbus messages. All drive parameters and data can be accessed
through MEMOBUS/Modbus. The data in this message type is transferred to the drive after
being received and edited by the option and more time is required to return the data to the
master. The master must synchronize the timing of sending and receiving the data by a
process called handshaking.
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Memory Maps
The following register maps show the I/O data bytes.
Basic and Extended Register Maps
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Table 9 Number of Bytes in Basic and Extended Data Messages
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
38
Basic Data
(6 bytes)
Bytes 0 to 5
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Table 10 Basic Data Register Map Detail
Description
YASKAWA ELECTRIC TOBP C730600 82B YASKAWA AC Drive Option SI-P3 Installation Manual
Extended Data 1
(32 bytes)
Bytes 0 to 15
Bytes 16 to 31
Input (Drive to Master Device)
Byte Description
0 Drive Status High Byte
1 Drive Status Low Byte
2 Motor Speed High Byte
Extended Data 2
(12 bytes)
Bytes 0 to 3
Bytes 4 to 11
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