Yaskawa 1000 Series Drive Option - Profibus-DP Installation - Manual (Page 26)

26 YASKAWA ELECTRIC TOBP C730600 42C 1000-Series Option SI-P3 Installation Manual
7 Option Data and I/O Maps
7 Option Data and I/O Maps
◆
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
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
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.
◆
Memory Maps
The following register maps show the I/O data bytes.
■ Basic and Extended Register Maps
Table 9 Number of Bytes in Basic and Extended Data Messages
Table 10 Basic Data Register Map Detail
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 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>