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13.3.13
data : Parameter Data
Individual Parameter Transfer
Format:
index0
index1
index2
:
indexN
Parameter data indicates the parameter value. Data is repeatedly placed in an array of the size equiv-
alent to len+1. For the structure of one data item, the length depends on the data bit width(Parameter
List Size), as shown below.
Size
Number of Data
1 - 7
1
8 - 14
2
15 - 21
3
22 - 28
4
29 - 32
5
Each block of data is packed from the lowest order byte first. In the case of multiple-byte data, the
lowest weighted bit is the least significant digit of the first data byte, and the highest weighted bit is
the most significant digit of the final data byte. The following shows an example of how data would be
divided for transfer in the case of 32-bit data.
7
6
data0:
0
[bit06]
data1:
0
[bit13]
data2:
0
[bit20]
data3:
0
[bit27]
data4:
0
0
Single Parameter Data Size Limit Under the Instrument's System Exclusive message format, the
size of a single message cannot exceed 48 bytes in all other cases. The data size and the array size,
however, can cause a packet to exceed 48 bytes when transferring a single parameter array. In this case,
the IPS and IPR message data length and data index number values can be modified to enable division
of a single parameter value into multiple messages so it can be sent that way.
14
Individual Parameter Operations
There are two parameter unit operations: Individual Parameter Transfer and Individual Parameter
Request. For one session, in response to an IPR (Individual Parameter Request) from an external
device, this Instrument returns an IPS (Individual Parameter Send) or the session is concluded when
the external device or this Instrument spontaneously sends an IPS. If this Instrument received an IPS,
the value of the applicable parameter is changed. Depending on the function of a parameter, Individual
Parameter Send may be used to issue a command to the Instrument and Individual Parameter Request
may be used to check Instrument status information.
Data Receiver
IPR
0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
:
0dddddddB (0eeeeeeeB) (0fffffffB) (0gggggggB) (0hhhhhhhB)
5
4
[bit05]
[bit04]
[bit12]
[bit11]
[bit19]
[bit18]
[bit26]
[bit25]
0
0
Data Sender
→
←
IPS
3
2
[bit03]
[bit02]
[bit10]
[bit09]
[bit17]
[bit16]
[bit24]
[bit23]
[bit31]
[bit30]
30
1
0
[bit01]
[bit00]
[bit08]
[bit07]
[bit15]
[bit14]
[bit22]
[bit21]
[bit29]
[bit28]
Operation
Send Request(Optional)
Data Transfer
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