17.2.1010...index Parameter Index Number

When act = 00(IPC) or 01(IPR)

Format:

0iiiiiiiB

(0jjjjjjjB)

(0kkkkkkkB) (0lllllllB)

This field contains a supplementary number that points to data when parameters are arrayed. This means that each parameter has a different number, and the length of the number is anywhere from one to four bytes.

Even when parameters have the same IDs, for example, the parameters also have preset numbers, part numbers, and key numbers, and so the parameters can be distinguished by specifying these values with an "index".

When act = 02(BDS) or 04(HDS)

Format:

0nnnnnnnB

0NNNNNNNB

0LLLLLLLB

In this case, "index" is a 3-byte fixed field. When transferring one parameter set, it indicates the divided packet serial number (starting with 00) and the size of the "data" field that immediately follows this field.

i[0]...0nnnnnnnB Packet Number LSB (NNNNNNNnnnnnnnB = Packet Number)

i[1]...0NNNNNNNB Packet Number MSB

As detailed in the "data" field explanation, up to 128 bytes of data can be send in one packet. When sending data in excess of 128 bytes, it is divided into 128-byte packets (final packet can be less than 128 bytes), and received data is stored at the address equivalent to:

ParameterSet Start Address + PacketNumber × 128

i[2]...0LLLLLLLB data length / 3

The data length is the data length indicated here, multiplied by 3. This means that the data length is always a multiple of 3.

When act = 03(BDR) or 05(HDR)

Format: -

This field is always empty.

When act = 7 (EOD, HDA, HDJ, HDE, BSY, EOS, NOP)

Format:

0000ccccB

In this case, the "index" field length is fixed at 1 byte, and it indicates the control messages used for handshaking as shown below. See "19 Parameter Set Transfer Protocols" for more information.

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Casio WK-3700, WK-3200 17.2.10 10...index Parameter Index Number, When act = 00IPC or 01IPR, When act = 02BDS or 04HDS
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WK-3700, WK-3200, CTK-900 specifications

The Casio CTK-900, WK-3200, and WK-3700 are a trio of notable keyboards that cater to both beginner and intermediate musicians. Each model features a range of impressive specifications and functionalities designed to enhance the musical experience while allowing for creativity and exploration in sound.

The Casio CTK-900 is a compact 61-key keyboard that includes 600 tones and 180 rhythms, offering a diverse palette for anyone looking to explore different music styles. One of its key features is the Dance Music Mode, which simplifies the process of creating electronic music tracks through a user-friendly interface. The CTK-900 also includes a High-Quality module and a built-in lesson function that guides users through playing. With a lightweight design, it is highly portable and perfect for musicians on the go. Its MIDI connectivity allows for easy integration with computer software for recording and music production.

Moving on to the WK-3200, this model features a 76-key touch response keyboard, which provides a more extensive range for playing. It includes 670 tones and 200 rhythms, giving users even more options for musical expression. The WK-3200 also offers a larger LCD display for easier navigation through settings, and it features a Music Tutor function that helps users improve their skills. With layered and split keyboard capabilities, the WK-3200 is ideal for those looking to perform as a solo artist or in a band setting. Its built-in speaker system delivers clear sound output, enhancing the overall playing experience.

The WK-3700 takes many of the positives from the WK-3200 and elevates them further. With the same 76-key layout, it provides expressive playing capabilities while incorporating over 700 tones and 200 rhythms. This model also allows users to record their performances in real time using a built-in 6-track sequencer, making it easier for musicians to arrange and edit their own compositions. Additionally, the WK-3700 includes advanced features like the ambiance and reverb effects, providing an enhanced sound quality. The incorporation of features such as a song bank with over 100 pre-recorded songs ensures that users can learn and play along with ease.

Overall, the Casio CTK-900, WK-3200, and WK-3700 are excellent choices for musicians seeking versatile and user-friendly keyboards. Each model brings unique features and technologies that support musical innovation while catering to a wide range of skill levels. Whether you are a budding artist or a seasoned performer, these keyboards provide an effective blend of utility, quality, and fun.
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